153-501: The River Etherow in northern England is a tributary of the River Goyt . Although now passing through South Yorkshire , Derbyshire and Greater Manchester , it historically formed the ancient county boundary between Cheshire and Derbyshire. The upper valley is known as Longdendale . The river has a watershed of approximately 30 square miles (78 km), and the area an annual rainfall of 52.5 inches (1,330 mm). Rising in
306-429: A glacial armor . Ice can not only erode mountains but also protect them from erosion. Depending on glacier regime, even steep alpine lands can be preserved through time with the help of ice. Scientists have proved this theory by sampling eight summits of northwestern Svalbard using Be10 and Al26, showing that northwestern Svalbard transformed from a glacier-erosion state under relatively mild glacial maxima temperature, to
459-603: A Celtic culture, and had its own Celtic language, Cumbric , spoken predominately in Cumbria until around the 12th century. Parts of the north and east of England were subject to Danish control (the Danelaw ) during the Viking Age , but the northern part of the old Anglo-Saxon kingdom of Northumbria remained under Anglo-Saxon control. Under the Vikings, monasteries were largely wiped out, and
612-754: A Knave (1968). There are no recognised minority languages in Northern England, although the Northumbrian Language Society campaigns to have the Northumbrian dialect recognised as a separate language. It is possible that traces of now-extinct Brythonic Celtic languages from the region survive in some rural areas in the Yan Tan Tethera counting systems traditionally used by shepherds. Contact between English and immigrant languages has given rise to new accents and dialects. For instance,
765-728: A Northern dialect area, some correspond the area north of a line that begins at the Humber estuary and runs up the River Wharfe and across to the River Lune in north Lancashire. This area corresponds roughly to the sprachraum of the Old English Northumbrian dialect , although the linguistic elements that defined this area in the past, such as the use of doon instead of down and substitution of an ang sound in words that end - ong ( lang instead of long ), are now prevalent only in
918-631: A UK or Irish identity. 90.5% of the population described themselves as white, compared to an England and Wales average of 85.9%; other ethnicities represented include Pakistani (2.9%), Indian (1.3%), Black (1.3%), Chinese (0.6%) and Bangladeshi (0.5%). The broad averages hide significant variation within the region: Allerdale and Redcar and Cleveland had a greater percentage of the population identifying as White British (97.6% each) than any other district in England and Wales, while Manchester (66.5%), Bradford (67.4%) and Blackburn with Darwen (69.1%) had among
1071-606: A coherent entity at all. Many Industrial Revolution innovations began in Northern England, and its cities were the crucibles of many of the political changes that accompanied this social upheaval, from trade unionism to Manchester Liberalism . In the late 19th and early 20th centuries, the economy of the North was dominated by heavy industry . Centuries of immigration, invasion, and labour have shaped Northern England's culture, and it has retained countless distinctive accents and dialects , music, arts, and cuisine. Industrial decline in
1224-426: A considerable depth. A gully is distinguished from a rill based on a critical cross-sectional area of at least one square foot, i.e. the size of a channel that can no longer be erased via normal tillage operations. Extreme gully erosion can progress to formation of badlands . These form under conditions of high relief on easily eroded bedrock in climates favorable to erosion. Conditions or disturbances that limit
1377-581: A distinctive coarse-grained rock used to make millstones , is widespread in the Pennines, and the variety of other rock types is reflected in the architecture of the region, such as the bright red sandstone seen in buildings in Chester , the cream-buff Yorkstone and the distinctive purple Doddington sandstone. These sandstones also mean that apart from the east coast, most of Northern England has very soft water , and this has influenced not just industry, but even
1530-408: A fall in sea level, can produce a distinctive landform called a raised beach . Chemical erosion is the loss of matter in a landscape in the form of solutes . Chemical erosion is usually calculated from the solutes found in streams. Anders Rapp pioneered the study of chemical erosion in his work about Kärkevagge published in 1960. Formation of sinkholes and other features of karst topography
1683-479: A glacier-armor state occupied by cold-based, protective ice during much colder glacial maxima temperatures as the Quaternary ice age progressed. These processes, combined with erosion and transport by the water network beneath the glacier, leave behind glacial landforms such as moraines , drumlins , ground moraine (till), glaciokarst , kames, kame deltas, moulins, and glacial erratics in their wake, typically at
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#17328443294391836-464: A homogeneous bedrock erosion pattern, curved channel cross-section beneath the ice is created. Though the glacier continues to incise vertically, the shape of the channel beneath the ice eventually remain constant, reaching a U-shaped parabolic steady-state shape as we now see in glaciated valleys . Scientists also provide a numerical estimate of the time required for the ultimate formation of a steady-shaped U-shaped valley —approximately 100,000 years. In
1989-423: A large river can remove enough sediments to produce a river anticline , as isostatic rebound raises rock beds unburdened by erosion of overlying beds. Shoreline erosion, which occurs on both exposed and sheltered coasts, primarily occurs through the action of currents and waves but sea level (tidal) change can also play a role. Hydraulic action takes place when the air in a joint is suddenly compressed by
2142-459: A lineage of female realist writers from the North that later included Winifred Holtby , Catherine Cookson , Beryl Bainbridge and Jeanette Winterson . Many of the angry young men of post-war literature were Northern, and working-class life in the face of deindustrialisation is depicted in novels such as Room at the Top (1959), Billy Liar (1959), This Sporting Life (1960) and A Kestrel for
2295-563: A major target for Luftwaffe attacks during the Second World War . The Blitz of 1940–1941 saw major raids on Barrow-in-Furness , Hull , Leeds , Manchester , Merseyside , Newcastle and Sheffield with thousands killed and significant damage done. Liverpool, a vital port for supplies from North America, was especially hard hit – the city was the most bombed in the UK outside London and Hull, with around 4,000 deaths across Merseyside and most of
2448-845: A more modern occupation known as the Creswellian culture around 12,000 years ago. Kirkwell Cave in Lower Allithwaite , Cumbria shows signs of the Federmesser culture of the Paleolithic , and was inhabited some time between 13,400 and 12,800 years ago. Significant settlement appears to have begun in the Mesolithic era, with Star Carr in North Yorkshire generally considered the most significant monument of this era. The Star Carr site includes Britain's oldest known house, from around 9000 BC, and
2601-487: A mountain mass similar to the Himalaya into an almost-flat peneplain if there are no significant sea-level changes . Erosion of mountains massifs can create a pattern of equally high summits called summit accordance . It has been argued that extension during post-orogenic collapse is a more effective mechanism of lowering the height of orogenic mountains than erosion. Examples of heavily eroded mountain ranges include
2754-558: A small local community group, the Friends of Etherow, anglers, the afore-mentioned sailing club, and a model boat club. Compstall Nature Reserve is a 12.8-hectare (32-acre) region of the park which is designated a Site of Special Scientific Interest (SSSI). The area was given the designation in 1977 for its biological interest, in particular its wide range of habitats, including open water, tall fen , reed swamp , carr and mixed deciduous woodland . The Etherow has no major tributaries; it
2907-432: A surface is eroded. Typically, physical erosion proceeds the fastest on steeply sloping surfaces, and rates may also be sensitive to some climatically controlled properties including amounts of water supplied (e.g., by rain), storminess, wind speed, wave fetch , or atmospheric temperature (especially for some ice-related processes). Feedbacks are also possible between rates of erosion and the amount of eroded material that
3060-555: A thin deposit of boulder clay . The brooks are fed by the peaty soils of the moors and are, therefore, acidic (pH5.5–7.0). The Etherow valley was an important trans-Pennine route, and in AD 78 the Romans under Agricola built the fort of Ardotalia (later known as Melandra or Melandra Castle) to defend it. The Mercians settled at Hollingworth about 650 AD. Many placenames of the area date from this period; for example, Mottram and Glossop . At
3213-501: A wave closing the entrance of the joint. This then cracks it. Wave pounding is when the sheer energy of the wave hitting the cliff or rock breaks pieces off. Abrasion or corrasion is caused by waves launching sea load at the cliff. It is the most effective and rapid form of shoreline erosion (not to be confused with corrosion ). Corrosion is the dissolving of rock by carbonic acid in sea water. Limestone cliffs are particularly vulnerable to this kind of erosion. Attrition
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#17328443294393366-412: A weak bedrock (containing material more erodible than the surrounding rocks) erosion pattern, on the contrary, the amount of over deepening is limited because ice velocities and erosion rates are reduced. Glaciers can also cause pieces of bedrock to crack off in the process of plucking. In ice thrusting, the glacier freezes to its bed, then as it surges forward, it moves large sheets of frozen sediment at
3519-579: Is culturally and economically distinct from both the Midlands and Southern England . The area's northern boundary is the border with Scotland , its western the Irish Sea and a short border with Wales , and its eastern the North Sea . Its southern border is often debated, and there has been controversy in defining what geographies or cultures precisely constitute the 'North of England' — if, indeed, it exists as
3672-618: Is a steep-sided V-shaped valley that is glacial in origin. Longdendale is in the Dark Peak , where a thick blanket of peat overlies the Millstone Grit sandstone, formed on a bed of shale through which flows the Etherow. Directly beneath the upper valley lie areas of Carboniferous Millstone Grit, shales and sandstone . It is on the edge of the Peak District Dome, at the southern edge of
3825-537: Is already carried by, for example, a river or glacier. The transport of eroded materials from their original location is followed by deposition, which is arrival and emplacement of material at a new location. While erosion is a natural process, human activities have increased by 10–40 times the rate at which soil erosion is occurring globally. At agriculture sites in the Appalachian Mountains , intensive farming practices have caused erosion at up to 100 times
3978-490: Is also more prone to mudslides, landslides, and other forms of gravitational erosion processes. Tectonic processes control rates and distributions of erosion at the Earth's surface. If the tectonic action causes part of the Earth's surface (e.g., a mountain range) to be raised or lowered relative to surrounding areas, this must necessarily change the gradient of the land surface. Because erosion rates are almost always sensitive to
4131-484: Is an example of extreme chemical erosion. Glaciers erode predominantly by three different processes: abrasion/scouring, plucking , and ice thrusting. In an abrasion process, debris in the basal ice scrapes along the bed, polishing and gouging the underlying rocks, similar to sandpaper on wood. Scientists have shown that, in addition to the role of temperature played in valley-deepening, other glaciological processes, such as erosion also control cross-valley variations. In
4284-597: Is an increase from the 14,933,000 (and 6,364,000 households) counted in the 2011 census, and itself a growth of 5.1% from 2001. This means that Northerners comprise 28% of the English population and 24% of the UK population. Taken overall, 8% of the population of Northern England were born overseas (3% from the European Union including Ireland and 5% from elsewhere), substantially less than the England and Wales average of 13%, and 5% define their nationality as something other than
4437-409: Is distinguished from changes on the bed of the watercourse, which is referred to as scour . Erosion and changes in the form of river banks may be measured by inserting metal rods into the bank and marking the position of the bank surface along the rods at different times. Thermal erosion is the result of melting and weakening permafrost due to moving water. It can occur both along rivers and at
4590-535: Is fed by numerous brooks and streams from the cloughs flowing off Kinder Scout , Bleaklow and Black Hill . Minor left tributaries are: Minor right tributaries are: Northern England Northern England , or the North of England , is a region that forms the northern part of England and mainly corresponds to the historic counties of Cheshire , Cumberland , Durham , Lancashire , Northumberland , Westmorland and Yorkshire . The region also coincides with
4743-405: Is of two primary varieties: deflation , where the wind picks up and carries away loose particles; and abrasion , where surfaces are worn down as they are struck by airborne particles carried by wind. Deflation is divided into three categories: (1) surface creep , where larger, heavier particles slide or roll along the ground; (2) saltation , where particles are lifted a short height into
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4896-403: Is part of the 2,000 miles (3,200 km) European walking route E8 from Liverpool to Istanbul. The Pennine Way crosses Longdendale, descending from Bleaklow to the south and ascending Black Hill to the north. The youth hostel at Crowden is a traditional stop after the first day's walking, from Edale . The circular walk known as 'The Longdendale Edges' takes in the high ground (at about
5049-625: Is referred to as physical or mechanical erosion; this contrasts with chemical erosion, where soil or rock material is removed from an area by dissolution . Eroded sediment or solutes may be transported just a few millimetres, or for thousands of kilometres. Agents of erosion include rainfall ; bedrock wear in rivers ; coastal erosion by the sea and waves ; glacial plucking , abrasion , and scour; areal flooding; wind abrasion; groundwater processes; and mass movement processes in steep landscapes like landslides and debris flows . The rates at which such processes act control how fast
5202-597: Is reflected in its literature. On the one hand, the wild moors and lakes have inspired generations of Romantic authors: the poetry of William Wordsworth and the novels of the Brontë sisters are perhaps the most famous examples of writing inspired by these elemental forces. Classics of children's literature such as The Railway Children (1906), The Secret Garden (1911) and Swallows and Amazons (1930) portray these largely untouched landscapes as worlds of adventure and transformation where their protagonists can break free of
5355-404: Is sparse and soil is dry (and so is more erodible). Other climatic factors such as average temperature and temperature range may also affect erosion, via their effects on vegetation and soil properties. In general, given similar vegetation and ecosystems, areas with more precipitation (especially high-intensity rainfall), more wind, or more storms are expected to have more erosion. In some areas of
5508-465: Is the home to Etherow Country Park Sailing Club. Etherow Country Park , in Compstall , close to the mouth of the Etherow, opened in 1968 as one of the UK's first country parks . Originally it was an industrial area incorporating a mine, a mill and a mill pond. The River Etherow flows through the park and is the source for the mill pond. Etherow Country Park is associated with many local groups, including
5661-457: Is the main climatic factor governing soil erosion by water. The relationship is particularly strong if heavy rainfall occurs at times when, or in locations where, the soil's surface is not well protected by vegetation . This might be during periods when agricultural activities leave the soil bare, or in semi-arid regions where vegetation is naturally sparse. Wind erosion requires strong winds, particularly during times of drought when vegetation
5814-400: Is where particles/sea load carried by the waves are worn down as they hit each other and the cliffs. This then makes the material easier to wash away. The material ends up as shingle and sand. Another significant source of erosion, particularly on carbonate coastlines, is boring, scraping and grinding of organisms, a process termed bioerosion . Sediment is transported along the coast in
5967-445: The *Tin- type (see River Tyne ), derived from the hydronym *edre , which is possibly related to ēdre , "vein". The Longdendale Chain of reservoirs comprises three impounding reservoirs, Woodhead Reservoir , Torside Reservoir and Rhodeswood Reservoir , supplying 24,000,000 imperial gallons (110 Ml) of water a day by gravity to Manchester and Salford, and 6,600,000 imperial gallons (30 Ml) to Hyde and Denton through
6120-923: The Chesterfield , North East Derbyshire , Bolsover , and Derbyshire Dales districts have joined with districts of South Yorkshire to form the Sheffield City Region , along with the Bassetlaw District of Nottinghamshire, although for all other purposes these districts still remain in their respective East Midlands counties. Some parts of northern Derbyshire (including High Peak), Shropshire and Staffordshire are served by BBC North West . Some areas of Derbyshire and Nottinghamshire are served by BBC Yorkshire (formerly BBC North), whilst eastern Yorkshire shares its BBC region with Lincolnshire and small parts of Nottinghamshire and north west Norfolk . The historic part of Lincolnshire known as Lindsey (in essence
6273-625: The Great Depression the outer British unemployment rate was 16.1% and the Southern rate was less than half that at 7.1%. The weakening economy and interwar unemployment caused several episodes of social unrest in the region, including the 1926 general strike and the Jarrow March . The Great Depression highlighted the weakness of Northern England's specialised economy: as world trade declined, demand for ships, steel, coal and textiles all fell. For
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6426-658: The Great Plains , it is estimated that soil loss due to wind erosion can be as much as 6100 times greater in drought years than in wet years. Mass wasting or mass movement is the downward and outward movement of rock and sediments on a sloped surface, mainly due to the force of gravity . Mass wasting is an important part of the erosional process and is often the first stage in the breakdown and transport of weathered materials in mountainous areas. It moves material from higher elevations to lower elevations where other eroding agents such as streams and glaciers can then pick up
6579-677: The High Peak borough of Derbyshire are included in the Greater Manchester Built-Up Area , as villages and hamlets there such as Tintwistle, Crowden and Woodhead were formerly in Cheshire before local government boundary changes in 1974, due to their close proximity to the city of Manchester , and before this the borough was considered to be part of the Greater Manchester Statutory City Region . More recently,
6732-658: The Mottram tunnel . Valehouse Reservoir and Bottoms Reservoir are compensating reservoirs which have a combined holding capacity of 4,200,000,000 imperial gallons (19,000 Ml). The Woodhead Line, which followed the river from Hadfield to the Woodhead Tunnel portal, was an important cross-Pennine route built in 1844 by the Sheffield, Ashton-under-Lyne and Manchester Railway . Three tunnels of 4,840 metres (15,880 ft) were dug, connecting Woodhead with Dunford Bridge on
6885-533: The Norman Conquest , and to put an end to the rebellion, William ordered the Harrying of the North . In the winter of 1069–1070, towns, villages and farms were systematically destroyed across much of Yorkshire as well as northern Lancashire and County Durham. The region was gripped by famine and much of Northern England was deserted. Chroniclers at the time reported a hundred thousand deaths – modern estimates place
7038-555: The North Sea coastline. The geography of the North has been heavily shaped by the ice sheets of the Pleistocene era, which often reached as far south as the Midlands. Glaciers carved deep, craggy valleys in the central uplands, and, when they melted, deposited large quantities of fluvio-glacial material in lowland areas like the Cheshire and Solway Plains . On the eastern side of
7191-459: The Pennines . The saltway followed the Etherow to Ladyshaw, and at Salters Brook ( SK137999 ) it forked, with one route leading to Wakefield and another to Barnsley . Water was an important source of power for industry, and the Etherow and its tributaries were fast flowing and constant. Watermills were used to grind meal and to full woollen cloth (Littlemoor 1781). Wool was transported along
7344-619: The Personal Rule period. By the time war broke out in 1642, King Charles had moved his court to York, and Northern England was to become a major base of the Royalist forces until they were routed at the Battle of Marston Moor . At the beginning of the Industrial Revolution , Northern England had plentiful coal and water power while the poor agriculture in the uplands meant that labour in
7497-699: The River Don . Though now closed to railway traffic, one tunnel is used to route electricity cables for the National Grid , with work in progress to use a second tunnel for a new cable, thus preventing the re-establishment of rail traffic. Following the closure of the railway line, the trackbed was taken up and the Longdendale Trail constructed along its route. This is now part of the Trans-Pennine Trail , Sustrans National Cycle Route 62. This, in its turn,
7650-553: The River Goyt at Brabyns Park near Marple . The modern accepted start of the River Mersey is at the confluence of the Tame and Goyt, in central Stockport , 4 miles (6 km) downstream. However, older definitions, and many older maps, place its start at the confluence of the Etherow and Goyt; for example the 1911 Encyclopædia Britannica states "It is formed by the junction of the Goyt and
7803-627: The River Mersey (the line between the Humber and Mersey estuaries being a common boundary) and River Trent . The Isle of Man is occasionally included in broad geographical definitions of "the North" (for example, by the Survey of English Dialects , VisitBritain and BBC North West ), although it is politically and culturally distinct from England. Some areas of Derbyshire , Lincolnshire , Nottinghamshire and Staffordshire have northern characteristics and include satellites of northern cities. Towns in
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#17328443294397956-700: The Timanides of Northern Russia. Erosion of this orogen has produced sediments that are now found in the East European Platform , including the Cambrian Sablya Formation near Lake Ladoga . Studies of these sediments indicate that it is likely that the erosion of the orogen began in the Cambrian and then intensified in the Ordovician . If the erosion rate exceeds soil formation , erosion destroys
8109-460: The Wirral Peninsula to Doncaster , taking in the cities of Liverpool , Manchester , Leeds , and Sheffield , with a population of at least 7.6 million. Analysis by The Northern Way in 2006 found that 90% of the population of the North lived in and around: Liverpool , Central Lancashire , Manchester , Sheffield , Leeds , Hull and Humber Ports , Tees Valley and Tyne and Wear . At
8262-416: The accumulation zone above the glacial equilibrium line altitude), which causes increased rates of erosion of the mountain, decreasing mass faster than isostatic rebound can add to the mountain. This provides a good example of a negative feedback loop . Ongoing research is showing that while glaciers tend to decrease mountain size, in some areas, glaciers can actually reduce the rate of erosion, acting as
8415-478: The ice ages , Northern England was buried under ice sheets, and little evidence remains of habitation – either because the climate made the area uninhabitable, or because glaciation destroyed most evidence of human activity. The northernmost cave art in Europe is found at Creswell Crags in northern Derbyshire, near modern-day Sheffield, which shows signs of Neanderthal inhabitation 50 to 60 thousand years ago, and of
8568-405: The impact of a falling raindrop creates a small crater in the soil , ejecting soil particles. The distance these soil particles travel can be as much as 0.6 m (2.0 ft) vertically and 1.5 m (4.9 ft) horizontally on level ground. If the soil is saturated , or if the rainfall rate is greater than the rate at which water can infiltrate into the soil, surface runoff occurs. If
8721-779: The local Celtic languages . They are a dialectal continuum , middle areas that have a crossover between varieties spoken, around the North. Traditional dialectal areas are defined by their historic county or combined historic counties; including Cumbrian (Cumberland and Westmorland), Lancastrian (Lancashire), Northumbrian (Northumberland and Durham) and Tyke (Yorkshire). During the Industrial Revolution urban areas gained some or further distinction from traditional dialects; such as areas Mackem (Wearside), Mancunian (Manchester), Pitmatic (Great Northern Coalfield), Geordie (Tyneside), Smoggie (Teesside), Scouse (Liverpool) and around Hull . Linguists have attempted to define
8874-455: The lower crust and mantle . Because tectonic processes are driven by gradients in the stress field developed in the crust, this unloading can in turn cause tectonic or isostatic uplift in the region. In some cases, it has been hypothesised that these twin feedbacks can act to localize and enhance zones of very rapid exhumation of deep crustal rocks beneath places on the Earth's surface with extremely high erosion rates, for example, beneath
9027-675: The medieval era borders of Anglian Northumbria , the Anglo-Scandinavian Kingdom of Jorvik , and the Brythonic Celtic Hen Ogledd kingdoms . The North is a grouping of three statistical regions : the North East , the North West , and Yorkshire and the Humber . These had a combined population of 15.5 million at the 2021 census , an area of 37,331 km (14,414 square miles) and 17 cities . Northern England
9180-407: The surface runoff which may result from rainfall, produces four main types of soil erosion : splash erosion , sheet erosion , rill erosion , and gully erosion . Splash erosion is generally seen as the first and least severe stage in the soil erosion process, which is followed by sheet erosion, then rill erosion and finally gully erosion (the most severe of the four). In splash erosion ,
9333-462: The turnpike road (1731) that ran from Ashton-under-Lyne , Stalybridge , Mottram, Woodhead and Lady's Cross to Sheffield , to be woven on hand-looms in the dale. From 1782 to 1820, water-powered cotton mills were built along many brooks feeding the Etherow, including six on the Glossop side of the river. With the adoption of steam to power the ever-larger mills, built closer to the coal fields,
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#17328443294399486-552: The 1,000 feet (300 m)-1,500 feet (460 m) level) on both sides of the valley. It is about 17 miles (27 km) long and is 'not recommended in doubtful weather'. The detailed route, clockwise from Crowden Youth Hostel, is given in Peak District Walking Guide No.2 , published by the Peak Park Planning Board. Torside Reservoir is home to Glossop & District Sailing Club and Etherow Country Park
9639-762: The 1640 Treaty of Ripon King Charles I was forced to temporarily cede Northumberland and County Durham to the Scots and pay to keep the Scottish armies there. To raise enough funds and ratify the final peace treaty, Charles had to call what became the Long Parliament , beginning the process that led to the First English Civil War . In 1641, the Long Parliament abolished the Council of the North for perceived abuses during
9792-457: The 1950s reshaped Northern England once more, and there are now significant populations from the Indian subcontinent in towns and cities such as Bradford, Leeds, Preston and Sheffield. Deindustrialisation continued and unemployment gradually increased during the 1970s, but accelerated during the government of Margaret Thatcher , who chose not to encourage growth in the North if it risked growth in
9945-413: The 2011 census, 86% of the Northern population lived in urban areas as defined by the Office for National Statistics , compared to 82% for England as a whole. Due to differing definitions and city limits , the list of largest towns and cities may be misleading. For example while Manchester is ranked fourth as a city, the greater urban area it leads ( Greater Manchester Built-up Area ) is the largest in
10098-499: The 21st century, a strong link has been drawn between the increase in storm frequency with an increase in sediment load in rivers and reservoirs, highlighting the impacts climate change can have on erosion. Vegetation acts as an interface between the atmosphere and the soil. It increases the permeability of the soil to rainwater, thus decreasing runoff. It shelters the soil from winds, which results in decreased wind erosion, as well as advantageous changes in microclimate. The roots of
10251-553: The Brigantes made the Romans wary, and they were conquered in a war beginning in the 70s under the governorship of Quintus Petillius Cerialis . The Romans created the province of " Britannia Inferior " (Lower Britain) in the North, and it was ruled from the city of Eboracum (modern York ). Eboracum and Deva Victrix (modern Chester) were the main legionary bases in the region, with other smaller forts including Mamucium (Manchester) and Cataractonium ( Catterick ). Britannia Inferior extended as far north as Hadrian's Wall , which
10404-823: The Etherow a short distance below Marple in Cheshire on the first-named stream." John Stockdale's map published on 12 April 1794 shows the Mersey River extending to at least Mottram , and forming the boundary between Cheshire and Derbyshire . The upper reaches of the River Etherow pass through peat moorland , inhabited by red foxes , voles and an introduced population of mountain hare . Red grouse , ring ouzel , wheatear and golden plover may be seen. Kestrels , merlins and short-eared owls nest here. The reservoirs attract mallards , and also teal , pochard , common sandpipers , black-headed gulls and Canada geese . The woodlands are home to redstart , great spotted woodpecker , and spotted flycatcher . Water rail have been recorded at Etherow Country Park. Longdendale
10557-427: The Lake District receive over 3,200 mm (130 in). Lowland regions in the more southern parts of Northern England (such as Cheshire and South Yorkshire) are the warmest with average maximum July temperatures of over 21 °C (70 °F): the highest points in the Pennines and Lake District reach only 17 °C (63 °F). The North has a reputation for cloud and fog – with the west's high average rainfall and
10710-492: The North East and Cumbria, excluding the entirety, or at least the majority, of Lancashire and Yorkshire. Some settlements, including Sheffield, located in the far south of what would typically be defined as "the North", have been referred to as being in the " North Midlands " as opposed to "the North". Personal definitions of the North vary greatly. When asked to draw a dividing line between North and South, Southerners tend to draw this line further south than Northerners do. From
10863-480: The North East) or yous (common in areas with historical Irish communities). Many dialects use me as a possessive ("me car") and some treat us likewise ("us cars") or use the alternative wor ("wor cars"). Possessive pronouns are also used to mark the names of relatives in speech (for example, a relative called Joan would be referred to as "our Joan" in conversation). With urbanisation, distinctive urban accents have arisen which often differ greatly from
11016-640: The North emigrated, chiefly to the US, Canada, South Africa, Australia and New Zealand. The First World War was the turning point for the economy of Northern England. In the interwar years , the Northern economy began to be eclipsed by the South – in 1913–1914, unemployment in "outer Britain" (the North, plus Scotland and Wales) was 2.6% while the rate in Southern England was more than double that at 5.5%, but in 1937 during
11169-537: The North starts somewhere in North Yorkshire around the River Tees – the Yorkshire poet Simon Armitage suggests Thirsk , Northallerton or Richmond – and does not include cities like Manchester and Leeds , nor the majority of Yorkshire. Northern England is not a homogeneous unit, and some have entirely rejected the idea that the North exists as a coherent entity, claiming that considerable cultural differences across
11322-406: The North. The Lake District includes England's highest peak, Scafell Pike , which rises to 978 m (3,209 ft), its largest lake, Windermere , and its deepest lake, Wastwater . Northern England is one of the most treeless areas in Europe, and to combat this the government plans to plant over 50 million trees in a new Northern Forest . Uniquely for such a large urban belt in Europe,
11475-663: The North–South divide strengthened the distinct Northern English identity, which, despite regeneration in some of the major cities, remains to this day. The region saw several IRA attacks during the Troubles , including the M62 coach bombing , the Warrington bomb attacks and the 1992 and 1996 Manchester bombings . The latter was the largest bomb detonation in Great Britain since the end of
11628-690: The Norwegian king Harald Hardrada by the Anglo-Saxon Harold Godwinson at the Battle of Stamford Bridge near York marked the beginning of the end of Viking rule in England, and the almost immediate defeat of Godwinson at the hands of the Norman William the Conqueror at the Battle of Hastings was in turn the overthrow of the Anglo-Saxon order. The Northumbrian and Danish aristocracy resisted
11781-452: The Pennine anticline . The Variscan uplift has caused much faulting and Glossopdale was the product of glacial action in the last glaciation period that exploited the weakened rocks. The steep-sided valleys of the cloughs cause significant erosion and deposition . The layers of sandstone, mudstones and shale in the bedrock act as an aquifer to feed the springs. The valley bottoms have
11934-723: The Pennines, a former glacial lake forms the Humberhead Levels : a large area of fenland which drains into the Humber and which is very fertile and productive farmland. Much of the mountainous upland remains undeveloped, and of the ten national parks in England , five – the Peak District, the Lake District, the North York Moors, the Yorkshire Dales , and Northumberland National Park – are located partly or entirely in
12087-912: The Redhole Spring and Wike Head area of Pikenaze Moor in Derbyshire, the river broadens into the Longdendale Chain of reservoirs in the Peak District National Park . It emerges again in Tintwistle , Derbyshire, at the foot of Bottoms Reservoir dam and passes Melandra Castle in Gamesley , where it is joined by Glossop Brook. The Etherow enters the borough of Tameside at Hollingworth in Greater Manchester, passing into Stockport where it passes through Etherow Country Park . It flows into
12240-768: The Romans as Brigantia . Other tribes mentioned in ancient histories, which may have been part of the Brigantes or separate nations, are the Carvetii of modern-day Cumbria and the Parisi of east Yorkshire. The Brigantes allied with the Roman Empire during the Roman conquest of Britain : Tacitus records that they handed the resistance leader Caratacus over to the Empire in 51. Power struggles within
12393-528: The Roses , including the decisive Battle of Wakefield , although the modern-day conception of the war as a conflict between Lancashire and Yorkshire is anachronistic – Lancastrians recruited from across Northern England, including Yorkshire, even requiring mercenaries from Scotland and France , while the Yorkists drew most of their power from Southern England, Wales and Ireland. The Anglo-Scottish Wars also touched
12546-478: The Second World War, and damaged or destroyed much of central Manchester. The attack led to Manchester's ageing infrastructure being rebuilt and modernised, sparking the regeneration of the city and making it a leading example of post-industrial redevelopment followed by other cities in the region and beyond. At the 2021 census , Northern England had a population of 15,550,000, in 6,659,700 households. This
12699-403: The South. The era saw the 1984–85 miners' strike , which brought hardship for many Northern mining towns. Northern metropolitan county councils, which were Labour strongholds often with very left-wing leadership (such as Militant-dominated Liverpool and the so-called " People's Republic of South Yorkshire "), had high-profile conflicts with the national government. The increasing awareness of
12852-472: The Southern perspective, Northern England is sometimes defined jokingly as the area north of the Watford Gap between Northampton and Leicester – a definition which would include much of the Midlands . Various cities and towns have been described as or promoted themselves as the "gateway to the North", including Crewe , Stoke-on-Trent , and Sheffield . For some in the northernmost reaches of England,
13005-504: The Tees, Deira corresponded roughly to the eastern half of modern-day Yorkshire, Rheged to Cumbria, and Elmet to the western-half of Yorkshire. Bernicia and Deira were first united as Northumbria by Aethelfrith , a king of Bernicia who conquered Deira around the year 604. Northumbria then saw a Golden Age in cultural, scholarly and monastic activity, centred on Lindisfarne and aided by Irish monks. The north-west of England retains vestiges of
13158-527: The UK's potash . Northern England has a cool, wet oceanic climate with small areas of subpolar oceanic climate in the uplands. Averaged across the entire region, Northern England temperature range and sunshine duration is similar to the UK average and it sees substantially less rainfall than Scotland or Wales. It is cooler, wetter and cloudier than England as a whole, containing both England's coldest ( Cross Fell ) and rainiest point ( Seathwaite Fell ). These averages disguise considerable variation across
13311-588: The Yorkshire-based Pilgrimage of Grace , all against Henry VIII . His daughter Elizabeth I faced another Catholic rebellion, the Rising of the North . The region would become the centre of recusancy as prominent Catholic families in Cumbria, Lancashire and Yorkshire refused to convert to Protestantism. Royal power over the region was exercised through the Council of the North at King's Manor , York, which
13464-742: The absence of the FOOT – STRUT split (so put and putt are homophones ), the reduction of the definite article the to a glottal stop (usually represented in writing as t ' or occasionally th ' , although it is often not pronounced as a /t/ sound) or its total elision , and the T-to-R rule that leads to the pronunciation of t as a rhotic consonant in phrases like get up ( [ɡɛɹ ʊp] ). The pronouns thou and thee survive in some Northern English dialects, although these are dying out outside very rural areas, and many dialects have an informal second-person plural pronoun: either ye (common in
13617-433: The air, and bounce and saltate across the surface of the soil; and (3) suspension , where very small and light particles are lifted into the air by the wind, and are often carried for long distances. Saltation is responsible for the majority (50–70%) of wind erosion, followed by suspension (30–40%), and then surface creep (5–25%). Wind erosion is much more severe in arid areas and during times of drought. For example, in
13770-693: The area overwhelm any similarities. The Pennines , an upland range sometimes referred to as "the backbone of England" run through most of the area defined as northern England, which stretches from the Tyne Gap to the Peak District . Other uplands in the North include the Lake District with England's highest mountains, the Cheviot Hills adjoining the border with Scotland, and the North York Moors near
13923-484: The area was cheap. Mining and milling, which had been practised on a small scale in the area for generations, began to grow and centralise. The boom in industrial textile manufacture is sometimes attributed to the damp climate and soft water making it easier to wash and work fibres, although the success of Northern fabric mills has no single clear source. Readily available coal and the discovery of large iron deposits in Cumbria and Cleveland allowed ironmaking and, with
14076-463: The base along with the glacier. This method produced some of the many thousands of lake basins that dot the edge of the Canadian Shield . Differences in the height of mountain ranges are not only being the result tectonic forces, such as rock uplift, but also local climate variations. Scientists use global analysis of topography to show that glacial erosion controls the maximum height of mountains, as
14229-525: The blends of tea enjoyed in the region. Rich deposits of iron ore are found in Cumbria and the North East, and fluorspar and baryte are also plentiful in northern parts of the Pennines. Salt mining in Cheshire has a long history, and both remaining rock salt mines in Great Britain are in the North: Winsford Mine in Cheshire and Boulby Mine in North Yorkshire, which also produces half of
14382-540: The booming industrial cities, some were escaping poverty, some were servants or slaves, some were sailors who chose to settle in the port towns, some were Jews fleeing pogroms on the continent, and some were migrants originally stranded at Liverpool after attempting to catch an onwards ship to the United States or to colonies of the British Empire . At the same time, hundreds of thousands from depressed rural areas of
14535-522: The cities in this region are all as recent as the Industrial Revolution – most of them previously scattered villages. Vast urban areas have emerged along the coasts and rivers, and they run almost contiguously into each other in places. Near the east coast, trade fuelled the growth of major ports and settlements ( Kingston upon Hull , Newcastle upon Tyne , , Middlesbrough and Sunderland ) to create multiple urban areas. Inland needs of trade and industry produced an almost continuous urbanisation from
14688-418: The city centre destroyed. Hull, the worst bombed city outside of London suffered damage to 98% of all buildings, the highest percentage of any town or city. The rebuilding that followed, and the simultaneous slum clearance that saw whole neighbourhoods demolished and rebuilt, transformed the faces of Northern cities. Immigration from the " New Commonwealth ", especially Pakistan and Bangladesh , starting in
14841-512: The coast. Rapid river channel migration observed in the Lena River of Siberia is due to thermal erosion, as these portions of the banks are composed of permafrost-cemented non-cohesive materials. Much of this erosion occurs as the weakened banks fail in large slumps. Thermal erosion also affects the Arctic coast , where wave action and near-shore temperatures combine to undercut permafrost bluffs along
14994-409: The coastline. Where there is a bend in the coastline, quite often a buildup of eroded material occurs forming a long narrow bank (a spit ). Armoured beaches and submerged offshore sandbanks may also protect parts of a coastline from erosion. Over the years, as the shoals gradually shift, the erosion may be redirected to attack different parts of the shore. Erosion of a coastal surface, followed by
15147-569: The conquest, which likely populated much of the desolated regions of Cumbria, and which was persistent enough that the town of Beverley in the East Riding of Yorkshire still had an ethnic enclave called Flemingate in the thirteenth century. During the Anarchy , Scotland invaded Northern England and took much of the land north of the Tees . In the 1139 peace treaty that followed, Prince Henry of Scotland
15300-718: The desert". Monastic orders such as the Cistercians became significant players in the economy of Northern England – the Cistercian Fountains Abbey in North Yorkshire became the largest and richest of the Northern abbeys, and would remain so until the Dissolution of the Monasteries . Other Cistercian abbeys are at Rievaulx , Kirkstall and Byland . The 7th-century Whitby Abbey was Benedictine and Bolton Abbey , Augustinian . A significant Flemish immigration followed
15453-411: The direction of the prevailing current ( longshore drift ). When the upcurrent supply of sediment is less than the amount being carried away, erosion occurs. When the upcurrent amount of sediment is greater, sand or gravel banks will tend to form as a result of deposition . These banks may slowly migrate along the coast in the direction of the longshore drift, alternately protecting and exposing parts of
15606-491: The discovery of grave goods in Northern churchyards suggests that Norse funeral rites replaced Christian ones for a time. Viking control of certain areas, particularly around Yorkshire, is recalled in the etymology of many place names : the thorpe in town names such as Cleethorpes and Scunthorpe , the kirk in Kirklees and Ormskirk and the by of Whitby and Grimsby all have Norse roots. The 1066 defeat of
15759-630: The earliest evidence of carpentry in the form of a carved tree trunk from 11000 BC. The Lincolnshire and Yorkshire Wolds around the Humber Estuary were settled and farmed in the Bronze Age , and the Ferriby Boats – one of the best-preserved finds of the era – were discovered near Hull in 1937. In the more mountainous regions of the Peak District, hillforts were the main Bronze Age settlement and
15912-472: The east coast experiences a distinctive sea fret . Smog in urban areas was prevalent from the beginning of the Industrial Revolution; sunshine duration has increased in urban areas in recent years with the Clean Air Act 1956 and the area's heavy industry in decline. The English spoken today in the North has been shaped by the area's history, and some dialects retain features inherited from Old Norse and
16065-524: The extent of the historical Northumbria , which excludes Cheshire and northern Lincolnshire, though the latter formed the Kingdom of Lindsey, which was periodically under Northumbrian rule. The Redcliffe-Maud Report (1969) proposed that southern Cheshire be grouped with north Staffordshire as part of a West Midlands province as opposed to a North West England one. Occasionally, "Northern England" may be used to describe England's northernmost reaches only, broadly
16218-405: The extremely steep terrain of Nanga Parbat in the western Himalayas . Such a place has been called a " tectonic aneurysm ". Human land development, in forms including agricultural and urban development, is considered a significant factor in erosion and sediment transport , which aggravate food insecurity . In Taiwan, increases in sediment load in the northern, central, and southern regions of
16371-444: The first scheme of its type in the world. Three reservoirs were built on the Etherow to impound drinking water, with another two to provide compensation water for the mills downstream. The name Etherow could be of Brittonic Celtic origin and derived from the ancient term *ador , meaning "watercourse, channel". The settlement-name Tintwistle , however, implies that Etherow may be an Old English replacement for an earlier name of
16524-575: The flood regions result from glacial Lake Missoula , which created the channeled scablands in the Columbia Basin region of eastern Washington . Wind erosion is a major geomorphological force, especially in arid and semi-arid regions. It is also a major source of land degradation, evaporation, desertification, harmful airborne dust, and crop damage—especially after being increased far above natural rates by human activities such as deforestation , urbanization , and agriculture . Wind erosion
16677-417: The growth of protective vegetation ( rhexistasy ) are a key element of badland formation. Valley or stream erosion occurs with continued water flow along a linear feature. The erosion is both downward , deepening the valley , and headward , extending the valley into the hillside, creating head cuts and steep banks. In the earliest stage of stream erosion, the erosive activity is dominantly vertical,
16830-412: The historical accents of the surrounding rural areas and sometimes share features with Southern English accents. Northern English dialects remain an important part of the culture of the region, and the desire of speakers to assert their local identity has led to accents such as Scouse and Geordie becoming more distinctive and spreading into surrounding areas. The contrasting geography of Northern England
16983-518: The invention of the Bessemer process , steelmaking to take root in the region. High quality steel in turn fed the shipyards that opened along the coasts, especially on Tyneside and at Barrow-in-Furness . The Great Famine in Ireland of the 1840s drove migrants across the Irish Sea , and many settled in the industrial cities of the North, especially Manchester and Liverpool – at the 1851 census , 13% of
17136-411: The island can be tracked with the timeline of development for each region throughout the 20th century. The intentional removal of soil and rock by humans is a form of erosion that has been named lisasion . Mountain ranges take millions of years to erode to the degree they effectively cease to exist. Scholars Pitman and Golovchenko estimate that it takes probably more than 450 million years to erode
17289-409: The local slope (see above), this will change the rates of erosion in the uplifted area. Active tectonics also brings fresh, unweathered rock towards the surface, where it is exposed to the action of erosion. However, erosion can also affect tectonic processes. The removal by erosion of large amounts of rock from a particular region, and its deposition elsewhere, can result in a lightening of the load on
17442-502: The locals were most likely pastoralists raising livestock. Roman histories name the Celtic tribe that occupied the majority of Northern England as the Brigantes , likely meaning "Highlanders". Whether the Brigantes were a unified group or a looser federation of tribes around the Pennines is debated, but the name appears to have been adopted by the inhabitants of the region, which was known by
17595-478: The lowest proportions of White British outside London. Erosion Erosion is the action of surface processes (such as water flow or wind ) that removes soil , rock , or dissolved material from one location on the Earth's crust and then transports it to another location where it is deposited . Erosion is distinct from weathering which involves no movement. Removal of rock or soil as clastic sediment
17748-418: The material and move it to even lower elevations. Mass-wasting processes are always occurring continuously on all slopes; some mass-wasting processes act very slowly; others occur very suddenly, often with disastrous results. Any perceptible down-slope movement of rock or sediment is often referred to in general terms as a landslide . However, landslides can be classified in a much more detailed way that reflects
17901-407: The material has begun to slide downhill. In some cases, the slump is caused by water beneath the slope weakening it. In many cases it is simply the result of poor engineering along highways where it is a regular occurrence. Surface creep is the slow movement of soil and rock debris by gravity which is usually not perceptible except through extended observation. However, the term can also describe
18054-438: The mechanisms responsible for the movement and the velocity at which the movement occurs. One of the visible topographical manifestations of a very slow form of such activity is a scree slope. Slumping happens on steep hillsides, occurring along distinct fracture zones, often within materials like clay that, once released, may move quite rapidly downhill. They will often show a spoon-shaped isostatic depression , in which
18207-692: The more northern parts of the region. As speech has changed, there is little consensus on what defines a "Northern" accent or dialect. Northern English accents have not undergone the TRAP – BATH split , and a common shibboleth to distinguish them from Southern ones is the Northern use of the short a (the near-open front unrounded vowel ) in words such as bath and castle . On the opposite border, most Northern English accents can be distinguished from Scottish accents because they are non-rhotic , although some Lancashire and Northumberland accents remain rhotic. Other features common to many Northern English accents are
18360-484: The morphologic impact of glaciations on active orogens, by both influencing their height, and by altering the patterns of erosion during subsequent glacial periods via a link between rock uplift and valley cross-sectional shape. At extremely high flows, kolks , or vortices are formed by large volumes of rapidly rushing water. Kolks cause extreme local erosion, plucking bedrock and creating pothole-type geographical features called rock-cut basins . Examples can be seen in
18513-404: The most erosion occurs during times of flood when more and faster-moving water is available to carry a larger sediment load. In such processes, it is not the water alone that erodes: suspended abrasive particles, pebbles , and boulders can also act erosively as they traverse a surface, in a process known as traction . Bank erosion is the wearing away of the banks of a stream or river. This
18666-428: The most part, Northern factories were still using nineteenth-century technology, and were not able to keep up with advances in industries such as motors, chemicals and electricals, while the expansion of the electric grid removed the North's advantages in terms of power generation and meant it was now more economic to build new factories in the Midlands or South. The industrial concentration in Northern England made it
18819-531: The natural rate of erosion in the region. Excessive (or accelerated) erosion causes both "on-site" and "off-site" problems. On-site impacts include decreases in agricultural productivity and (on natural landscapes ) ecological collapse , both because of loss of the nutrient-rich upper soil layers . In some cases, this leads to desertification . Off-site effects include sedimentation of waterways and eutrophication of water bodies , as well as sediment-related damage to roads and houses. Water and wind erosion are
18972-583: The northern half of the county) is considered by many to be northern, or at least a larger part of Lincolnshire than merely the north and northeast Lincolnshire districts. The geographer Danny Dorling includes most of the West Midlands and part of the East Midlands in his definition of the North, claiming that "ideas of a midlands region add more confusion than light". Conversely, more restrictive definitions of Northern England also exist. Some are based on
19125-434: The nutrient-rich upper soil layers . In some cases, the eventual result is desertification . Off-site effects include sedimentation of waterways and eutrophication of water bodies, as well as sediment-related damage to roads and houses. Water and wind erosion are the two primary causes of land degradation ; combined, they are responsible for about 84% of the global extent of degraded land , making excessive erosion one of
19278-411: The order of a few centimetres (about an inch) or less and along-channel slopes may be quite steep. This means that rills exhibit hydraulic physics very different from water flowing through the deeper, wider channels of streams and rivers. Gully erosion occurs when runoff water accumulates and rapidly flows in narrow channels during or immediately after heavy rains or melting snow, removing soil to
19431-556: The plants bind the soil together, and interweave with other roots, forming a more solid mass that is less susceptible to both water and wind erosion. The removal of vegetation increases the rate of surface erosion. The topography of the land determines the velocity at which surface runoff will flow, which in turn determines the erosivity of the runoff. Longer, steeper slopes (especially those without adequate vegetative cover) are more susceptible to very high rates of erosion during heavy rains than shorter, less steep slopes. Steeper terrain
19584-692: The population of Manchester and Salford were Irish-born, and in Liverpool the figure was 22%. In response there was a wave of anti-Catholic riots and Protestant Orange Orders proliferated across Northern England, chiefly in Lancashire, but also elsewhere in the North. By 1881 there were 374 Orange organisations in Lancashire, 71 in the North East, and 42 in Yorkshire. From further afield, Northern England saw immigration from European countries such as Germany, Italy, Poland, Russia and Scandinavia. Some immigrants were well-to-do industrialists seeking to do business in
19737-496: The region and larger than Leeds's urban area ( West Yorkshire Built-up Area ) despite Leeds being the largest as a sole city. The table below shows the urban areas in the region with a population of at least 250,000. Peat is found in thick, plentiful layers across the Pennines and Scottish Borders, and there are many large coalfields, including the Great Northern , Lancashire and South Yorkshire Coalfields . Millstone grit ,
19890-608: The region, and in just 400 years, Berwick-upon-Tweed – now the northernmost town in England – changed hands more than a dozen times. The wars also saw thousands of Scots settle south of the border, chiefly in the border counties and Yorkshire. After the English Reformation , the North saw several Catholic uprisings, including the Lincolnshire Rising , Bigod's Rebellion in Cumberland and Westmorland, and largest of all,
20043-579: The region, due chiefly to the upland regions and adjacent seas. The prevailing winds across the British Isles are westerlies bringing moisture from the Atlantic; this means that the west coast frequently receives strong winds and heavy rainfall while the east coast lies in a rain shadow behind the Pennines. As a result the coast north of the Humber are the driest parts of the North, the Tees basin has 600 mm (24 in) of rain per year while parts of
20196-413: The relief between mountain peaks and the snow line are generally confined to altitudes less than 1500 m. The erosion caused by glaciers worldwide erodes mountains so effectively that the term glacial buzzsaw has become widely used, which describes the limiting effect of glaciers on the height of mountain ranges. As mountains grow higher, they generally allow for more glacial activity (especially in
20349-471: The restrictions of society. Modern poets such as the Poets Laureate Ted Hughes and Simon Armitage have found inspiration in the Northern countryside, producing works that take advantage of the sounds and rhythms of Northern English dialects. Meanwhile, the industrialising and urbanising cities of the North gave rise to many masterpieces of social realism . Elizabeth Gaskell was the first in
20502-461: The river assumed a new role as a source of water for Manchester and Salford . In 1844 John Frederick Bateman advised Manchester Corporation that the River Etherow, which rose at the highest point of the Pennine chain, could provide water, collected in purpose-built reservoirs, "nearly as pure as if it comes from the heavens." This led to the construction of the Longdendale Chain of reservoirs,
20655-828: The rolling of dislodged soil particles 0.5 to 1.0 mm (0.02 to 0.04 in) in diameter by wind along the soil surface. On the continental slope , erosion of the ocean floor to create channels and submarine canyons can result from the rapid downslope flow of sediment gravity flows , bodies of sediment-laden water that move rapidly downslope as turbidity currents . Where erosion by turbidity currents creates oversteepened slopes it can also trigger underwater landslides and debris flows . Turbidity currents can erode channels and canyons into substrates ranging from recently deposited unconsolidated sediments to hard crystalline bedrock. Almost all continental slopes and deep ocean basins display such channels and canyons resulting from sediment gravity flows and submarine canyons act as conduits for
20808-515: The runoff has sufficient flow energy , it will transport loosened soil particles ( sediment ) down the slope. Sheet erosion is the transport of loosened soil particles by overland flow. Rill erosion refers to the development of small, ephemeral concentrated flow paths which function as both sediment source and sediment delivery systems for erosion on hillslopes. Generally, where water erosion rates on disturbed upland areas are greatest, rills are active. Flow depths in rills are typically of
20961-469: The second half of the 20th century damaged the North, leading to greater deprivation than in the South. Although urban renewal projects and the transition to a service economy have resulted in strong economic growth in parts of the North, the North–South divide remains in both the economy and culture of England. For government and statistical purposes, Northern England is defined as the area covered by
21114-532: The shoreline and cause them to fail. Annual erosion rates along a 100-kilometre (62-mile) segment of the Beaufort Sea shoreline averaged 5.6 metres (18 feet) per year from 1955 to 2002. Most river erosion happens nearer to the mouth of a river. On a river bend, the longest least sharp side has slower moving water. Here deposits build up. On the narrowest sharpest side of the bend, there is faster moving water so this side tends to erode away mostly. Rapid erosion by
21267-593: The soil. Lower rates of erosion can prevent the formation of soil features that take time to develop. Inceptisols develop on eroded landscapes that, if stable, would have supported the formation of more developed Alfisols . While erosion of soils is a natural process, human activities have increased by 10-40 times the rate at which erosion occurs globally. Excessive (or accelerated) erosion causes both "on-site" and "off-site" problems. On-site impacts include decreases in agricultural productivity and (on natural landscapes ) ecological collapse , both because of loss of
21420-433: The terminus or during glacier retreat . The best-developed glacial valley morphology appears to be restricted to landscapes with low rock uplift rates (less than or equal to 2mm per year) and high relief, leading to long-turnover times. Where rock uplift rates exceed 2mm per year, glacial valley morphology has generally been significantly modified in postglacial time. Interplay of glacial erosion and tectonic forcing governs
21573-400: The three northernmost statistical regions of England: North East England , North West England and Yorkshire and the Humber . This area consists of the ceremonial counties of Cheshire , Cumbria , County Durham , East Riding of Yorkshire , Greater Manchester , Lancashire , Merseyside , Northumberland , North Yorkshire , South Yorkshire , Tyne and Wear and West Yorkshire , plus
21726-520: The time of Domesday (1086) the river was firmly established as the boundary between Cheshire and Derbyshire, but the name Edrow or Etherow applied to this upper reach of the Mersey cannot be dated earlier than c .1772. A packhorse route (known as a saltway) was maintained from the Middle Ages onwards to allow the export of salt from the Cheshire towns of Nantwich , Northwich and Middlewich across
21879-486: The total somewhere in the tens of thousands, out of a population of two million. When the Domesday Book was compiled in 1086, much of Northern England was still recorded as wasteland, although this may have been in part because the chroniclers, more interested in manorial farmland, paid little attention to pastoral areas. Following Norman subjugation, monasteries returned to the North as missionaries sought to "settle
22032-409: The transfer of sediment from the continents and shallow marine environments to the deep sea. Turbidites , which are the sedimentary deposits resulting from turbidity currents, comprise some of the thickest and largest sedimentary sequences on Earth, indicating that the associated erosional processes must also have played a prominent role in Earth's history. The amount and intensity of precipitation
22185-563: The two primary causes of land degradation ; combined, they are responsible for about 84% of the global extent of degraded land, making excessive erosion one of the most significant environmental problems worldwide. Intensive agriculture , deforestation , roads , anthropogenic climate change and urban sprawl are amongst the most significant human activities in regard to their effect on stimulating erosion. However, there are many prevention and remediation practices that can curtail or limit erosion of vulnerable soils. Rainfall , and
22338-458: The unitary authority areas of North Lincolnshire and North East Lincolnshire within the ceremonial county Lincolnshire . Other definitions use historic county boundaries, in which case the North is generally taken to comprise Cumberland , Northumberland, Westmorland , County Durham, Lancashire and Yorkshire , often supplemented by Cheshire. The boundary is sometimes drawn without reference to human borders, using geographic features such as
22491-427: The valleys have a typical V-shaped cross-section and the stream gradient is relatively steep. When some base level is reached, the erosive activity switches to lateral erosion, which widens the valley floor and creates a narrow floodplain. The stream gradient becomes nearly flat, and lateral deposition of sediments becomes important as the stream meanders across the valley floor. In all stages of stream erosion, by far
22644-480: The variety of English spoken by Poles in Manchester is distinct both from typical Polish-accented English and from Mancunian. At a local level, the diversity of immigrant communities means that some languages that are extremely rare in the country as a whole have strongholds in Northern towns: Bradford for instance has the largest proportion of Pashto speakers, while Manchester has most Cantonese speakers. During
22797-501: The world (e.g. western Europe ), runoff and erosion result from relatively low intensities of stratiform rainfall falling onto the previously saturated soil. In such situations, rainfall amount rather than intensity is the main factor determining the severity of soil erosion by water. According to the climate change projections, erosivity will increase significantly in Europe and soil erosion may increase by 13–22.5% by 2050 In Taiwan , where typhoon frequency increased significantly in
22950-491: The world (e.g. the mid-western US ), rainfall intensity is the primary determinant of erosivity (for a definition of erosivity check, ) with higher intensity rainfall generally resulting in more soil erosion by water. The size and velocity of rain drops is also an important factor. Larger and higher-velocity rain drops have greater kinetic energy , and thus their impact will displace soil particles by larger distances than smaller, slower-moving rain drops. In other regions of
23103-638: Was founded in 1484 by Richard III. The Council existed intermittently for the next two centuries – its final incarnation was created in the aftermath of the Pilgrimage of Grace and was chiefly an institution for providing order and dispensing justice. Northern England was a focal point for fighting during the Wars of the Three Kingdoms . The border counties were invaded by Scotland in the Second Bishops' War , and at
23256-404: Was made Earl of Northumberland and kept the counties of Cumberland, Westmorland and Northumbria, as well as part of Lancashire. These reverted to English control in 1157, establishing for the most part the modern England–Scotland border. The region also saw violence during The Great Raid of 1322 when Robert the Bruce invaded and raided the whole of Northern England. There was also the Wars of
23409-440: Was the northernmost border of the Roman Empire . Although the Romans invaded modern-day Northumberland and part of Scotland beyond it, they never succeeded in conquering the reaches of Britain beyond the River Tyne . After the end of Roman rule in Britain and the arrival of the Angles , Yr Hen Ogledd (the "Old North") was divided into rival kingdoms, Bernicia , Deira , Rheged and Elmet . Bernicia covered lands north of
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