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33-1643: Coordinates : 21°30′25″N 158°08′34″W / 21.50694°N 158.14278°W / 21.50694; -158.14278 Highest mountain on the island of Oahu, Hawaii, US [REDACTED] This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed. Find sources: "Kaʻala" – news · newspapers · books · scholar · JSTOR ( March 2013 ) ( Learn how and when to remove this message ) Kaʻala [REDACTED] Mt. Kaʻala, as seen from near Dole Plantation . Highest point Elevation 4,025 ft (1,227 m) Prominence 4,025 ft (1,227 m) Coordinates 21°30′25″N 158°08′34″W / 21.50694°N 158.14278°W / 21.50694; -158.14278 Naming Language of name Hawaiian Pronunciation Hawaiian pronunciation: [kəˈʔɐlə] Geography [REDACTED] [REDACTED] Kaʻala Hawaiian Islands Location Oahu , Hawaii , US Parent range Waianae Range Topo map USGS Haleiwa Geology Rock age 3.9 Ma Mountain type Plateau Volcanic arc / belt Hawaiian-Emperor seamount chain Kaʻala or Mount Kaʻala (pronounced [kəˈʔɐlə] in Hawaiian)
66-502: A tan ϕ {\displaystyle \textstyle {\tan \beta ={\frac {b}{a}}\tan \phi }\,\!} ; for the GRS 80 and WGS 84 spheroids, b a = 0.99664719 {\textstyle {\tfrac {b}{a}}=0.99664719} . ( β {\displaystyle \textstyle {\beta }\,\!} is known as the reduced (or parametric) latitude ). Aside from rounding, this
99-456: A datum transformation such as a Helmert transformation , although in certain situations a simple translation may be sufficient. Datums may be global, meaning that they represent the whole Earth, or they may be local, meaning that they represent an ellipsoid best-fit to only a portion of the Earth. Examples of global datums include World Geodetic System (WGS 84, also known as EPSG:4326 ),
132-588: A point on Earth's surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses (often called great circles ), which converge at the North and South Poles. The meridian of the British Royal Observatory in Greenwich , in southeast London, England, is the international prime meridian , although some organizations—such as
165-473: A region of the surface of the Earth. Some newer datums are bound to the center of mass of the Earth. This combination of mathematical model and physical binding mean that anyone using the same datum will obtain the same location measurement for the same physical location. However, two different datums will usually yield different location measurements for the same physical location, which may appear to differ by as much as several hundred meters; this not because
198-693: A white, domed-shaped structure. See also [ edit ] List of mountain peaks of the United States List of volcanoes of the United States List of mountain peaks of Hawaii Evolution of Hawaiian volcanoes Hawaii hotspot Hawaiian–Emperor seamount chain References [ edit ] ^ "Mt. Mount Ka'ala" . Department of Forestry and Wildlife . State of Hawaii . Retrieved 2013-02-21 . ^ "Ka'ala" . Geographic Names Information System . United States Geological Survey , United States Department of
231-411: Is 6,367,449 m . Since the Earth is an oblate spheroid , not spherical, that result can be off by several tenths of a percent; a better approximation of a longitudinal degree at latitude ϕ {\displaystyle \phi } is where Earth's equatorial radius a {\displaystyle a} equals 6,378,137 m and tan β = b
264-475: Is 110.6 km. The circles of longitude, meridians, meet at the geographical poles, with the west–east width of a second naturally decreasing as latitude increases. On the Equator at sea level, one longitudinal second measures 30.92 m, a longitudinal minute is 1855 m and a longitudinal degree is 111.3 km. At 30° a longitudinal second is 26.76 m, at Greenwich (51°28′38″N) 19.22 m, and at 60° it
297-519: Is 15.42 m. On the WGS 84 spheroid, the length in meters of a degree of latitude at latitude ϕ (that is, the number of meters you would have to travel along a north–south line to move 1 degree in latitude, when at latitude ϕ ), is about The returned measure of meters per degree latitude varies continuously with latitude. Similarly, the length in meters of a degree of longitude can be calculated as (Those coefficients can be improved, but as they stand
330-491: Is different from Wikidata Articles needing additional references from March 2013 All articles needing additional references Coordinates on Wikidata Pages with Hawaiian IPA Pages using infobox mountain with language parameter Geographic coordinate system A geographic coordinate system ( GCS ) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude . It
363-452: Is known as a graticule . The origin/zero point of this system is located in the Gulf of Guinea about 625 km (390 mi) south of Tema , Ghana , a location often facetiously called Null Island . In order to use the theoretical definitions of latitude, longitude, and height to precisely measure actual locations on the physical earth, a geodetic datum must be used. A horizonal datum
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#1732879940561396-622: Is the exact distance along a parallel of latitude; getting the distance along the shortest route will be more work, but those two distances are always within 0.6 m of each other if the two points are one degree of longitude apart. Like any series of multiple-digit numbers, latitude-longitude pairs can be challenging to communicate and remember. Therefore, alternative schemes have been developed for encoding GCS coordinates into alphanumeric strings or words: These are not distinct coordinate systems, only alternative methods for expressing latitude and longitude measurements. List of mountain peaks of
429-536: Is the highest mountain on the island of Oahu , at 1,227 metres (4,026 ft). It is a part of the Waianae Range , an eroded shield volcano on the west side of the island. The FAA maintains an active tracking station at the summit, which is closed to the general public and secured by the US Army which is stationed at the base of the mountain, at Schofield Barracks . The tracking station can be clearly seen from afar as
462-409: Is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others. Although latitude and longitude form a coordinate tuple like a cartesian coordinate system , the geographic coordinate system is not cartesian because the measurements are angles and are not on a planar surface. A full GCS specification, such as those listed in
495-465: Is used to precisely measure latitude and longitude, while a vertical datum is used to measure elevation or altitude. Both types of datum bind a mathematical model of the shape of the earth (usually a reference ellipsoid for a horizontal datum, and a more precise geoid for a vertical datum) to the earth. Traditionally, this binding was created by a network of control points , surveyed locations at which monuments are installed, and were only accurate for
528-741: The EPSG and ISO 19111 standards, also includes a choice of geodetic datum (including an Earth ellipsoid ), as different datums will yield different latitude and longitude values for the same location. The invention of a geographic coordinate system is generally credited to Eratosthenes of Cyrene , who composed his now-lost Geography at the Library of Alexandria in the 3rd century BC. A century later, Hipparchus of Nicaea improved on this system by determining latitude from stellar measurements rather than solar altitude and determining longitude by timings of lunar eclipses , rather than dead reckoning . In
561-471: The International Date Line , which diverges from it in several places for political and convenience reasons, including between far eastern Russia and the far western Aleutian Islands . The combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The visual grid on a map formed by lines of latitude and longitude
594-515: The 1st or 2nd century, Marinus of Tyre compiled an extensive gazetteer and mathematically plotted world map using coordinates measured east from a prime meridian at the westernmost known land, designated the Fortunate Isles , off the coast of western Africa around the Canary or Cape Verde Islands , and measured north or south of the island of Rhodes off Asia Minor . Ptolemy credited him with
627-499: The Earth's surface move relative to each other due to continental plate motion, subsidence, and diurnal Earth tidal movement caused by the Moon and the Sun. This daily movement can be as much as a meter. Continental movement can be up to 10 cm a year, or 10 m in a century. A weather system high-pressure area can cause a sinking of 5 mm . Scandinavia is rising by 1 cm a year as a result of
660-708: The European ED50 , and the British OSGB36 . Given a location, the datum provides the latitude ϕ {\displaystyle \phi } and longitude λ {\displaystyle \lambda } . In the United Kingdom there are three common latitude, longitude, and height systems in use. WGS 84 differs at Greenwich from the one used on published maps OSGB36 by approximately 112 m. The military system ED50 , used by NATO , differs from about 120 m to 180 m. Points on
693-524: The French Institut national de l'information géographique et forestière —continue to use other meridians for internal purposes. The prime meridian determines the proper Eastern and Western Hemispheres , although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E. This is not to be conflated with
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#1732879940561726-3084: The Interior . Retrieved 2009-12-23 . [REDACTED] Oceania portal [REDACTED] United States portal [REDACTED] Hawaii portal [REDACTED] Mountains portal [REDACTED] Volcanoes portal v t e The 13 major summits of Hawaiʻi Mauna Kea Mauna Loa Haleakalā Hualālai Puʻu Kukui Kaunu o Kaleihoohie Kawaikini Kamakou Olokuʻi Kaʻala Lānaʻihale Kōnāhuanui Hāʻupu v t e Hawaiian volcanism topics ( list ) Windward Isles South Arch volcanic field Kamaʻehuakanaloa Māhukona Hawaiʻi Kīlauea ( Kīlauea Iki , Pauahi Crater , Puʻu ʻŌʻō , Mauna Ulu ) Mauna Loa Hualālai Mauna Kea Kohala Kahoʻolawe Kauaʻi Kaʻula Lānaʻi Maui Haleakalā West Maui Molokaʻi Penguin Bank West Molokai Volcano East Molokai Volcano Niʻihau Oʻahu Honolulu Kaʻena Koʻolau North Arch volcanic field Waiʻanae [REDACTED] Leeward Isles French Frigate Shoals Gardner Pinnacles Kure Atoll Laysan Lisianski Island Maro Reef Midway Atoll Necker Island Nihoa Pearl and Hermes Atoll Emperor Seamounts Abbott Colahan Daikakuji Detroit Hancock Jingū Kammu Kimmei Koko Meiji Nintoku Ojin Suiko Yomei Yuryaku Notable eruptions and vents 1955 Hawaiian submarine eruption 1975 eruption of Mauna Loa 1984 eruption of Mauna Loa 2018 lower Puna eruption 2022 eruption of Mauna Loa Keanakakoi eruption ʻAilāʻau eruption Halemaʻumaʻu Kīlauea Caldera Kīlauea Iki Mauna Ulu Powers Caldera Puʻu ʻŌʻō Topics ʻAʻā (lava) Evolution of Hawaiian volcanoes Haleakalā National Park Hawaiʻi Volcanoes National Park Hawaiian–Emperor seamount chain Hawaiian eruption Hawaiian Volcano Observatory Kīlauea eruptions Lava fountain Limu o Pele Mauna Loa eruptions Pāhoehoe (lava) Pele (deity) Pele's hair Pele's tears Puna Geothermal Venture Volcano House Retrieved from " https://en.wikipedia.org/w/index.php?title=Kaʻala&oldid=1241430432 " Categories : Volcanoes of Oahu Mountains of Hawaii Landforms of Oahu Hidden categories: Pages using gadget WikiMiniAtlas Articles with short description Short description
759-1136: The United States This article comprises three sortable tables of major mountain peaks of the United States of America . The summit of a mountain or hill may be measured in three main ways: Download coordinates as: Of the 100 highest major summits of the United States, only Denali exceeds 6000 meters (19,685 feet) elevation, four peaks exceed 5000 meters (16,404 feet), and all 100 peaks exceed 4012 meters (13,163 feet) elevation. Of these 100 summits, 53 are located in Colorado, 23 in Alaska, 14 in California, five in Wyoming, two in Hawaiʻi, and one each in Washington, Utah, and New Mexico. Five of these summits are located on
792-566: The center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels , as they are parallel to the Equator and to each other. The North Pole is 90° N; the South Pole is 90° S. The 0° parallel of latitude is designated the Equator , the fundamental plane of all geographic coordinate systems. The Equator divides the globe into Northern and Southern Hemispheres . The longitude λ of
825-613: The default datum used for the Global Positioning System , and the International Terrestrial Reference System and Frame (ITRF), used for estimating continental drift and crustal deformation . The distance to Earth's center can be used both for very deep positions and for positions in space. Local datums chosen by a national cartographical organization include the North American Datum ,
858-490: The distance they give is correct within a centimeter.) The formulae both return units of meters per degree. An alternative method to estimate the length of a longitudinal degree at latitude ϕ {\displaystyle \phi } is to assume a spherical Earth (to get the width per minute and second, divide by 60 and 3600, respectively): where Earth's average meridional radius M r {\displaystyle \textstyle {M_{r}}\,\!}
891-468: The full adoption of longitude and latitude, rather than measuring latitude in terms of the length of the midsummer day. Ptolemy's 2nd-century Geography used the same prime meridian but measured latitude from the Equator instead. After their work was translated into Arabic in the 9th century, Al-Khwārizmī 's Book of the Description of the Earth corrected Marinus' and Ptolemy's errors regarding
924-954: The international border between Alaska and Yukon, and one is located on the international border between Alaska and British Columbia. The ten highest major summits of the United States are all located in Alaska. Download coordinates as: Of the 50 most prominent summits of the United States, only Denali exceeds 5000 meters (16,404 feet) of topographic prominence, three peaks exceed 4000 meters (13,123 feet), ten peaks exceed 3000 meters (9843 feet), 45 peaks exceed 2000 meters (6562 feet), and all 50 peaks exceed 1932 meters (6339 feet) of topographic prominence. All of these peaks are ultra-prominent summits . Of these 50 peaks, 27 are located in Alaska, five in Washington, five in California, three in Hawaiʻi, three in Wyoming, two in Nevada, two in Oregon, and one each in Colorado, Utah, and Arizona. Three of these summits lie on
957-1188: The international border between Alaska and Yukon, and one lies on the international border between Alaska and British Columbia. Download coordinates as: Of the 50 most isolated major summits of the United States, only Denali exceeds 4000 kilometers (2485 miles) of topographic isolation, Mauna Kea exceeds 3000 kilometers (1864 miles), Mount Whitney exceeds 2000 kilometers (1243 miles), seven peaks exceed 1000 kilometers (621.4 miles), 12 peaks exceed 500 kilometers (310.7 miles), 44 peaks exceed 200 kilometers (124.3 miles), and all 50 peaks exceed 160 kilometers (99.42 miles) of topographic isolation. Of these 50 peaks, 18 are located in Alaska, four in California, three in Washington, two in Hawaiʻi, two in Colorado, two in Wyoming, two in Arizona, two in Nevada, two in Utah, two in New York, two in Oregon, and one each in North Carolina, New Hampshire, Arkansas, West Virginia, New Mexico, Maine, Idaho, South Dakota, and Montana. One of these summits lies on
990-694: The length of the Mediterranean Sea , causing medieval Arabic cartography to use a prime meridian around 10° east of Ptolemy's line. Mathematical cartography resumed in Europe following Maximus Planudes ' recovery of Ptolemy's text a little before 1300; the text was translated into Latin at Florence by Jacopo d'Angelo around 1407. In 1884, the United States hosted the International Meridian Conference , attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt
1023-461: The location has moved, but because the reference system used to measure it has shifted. Because any spatial reference system or map projection is ultimately calculated from latitude and longitude, it is crucial that they clearly state the datum on which they are based. For example, a UTM coordinate based on WGS84 will be different than a UTM coordinate based on NAD27 for the same location. Converting coordinates from one datum to another requires
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1056-579: The longitude of the Royal Observatory in Greenwich , England as the zero-reference line. The Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911. The latitude ϕ of a point on Earth's surface is the angle between the equatorial plane and the straight line that passes through that point and through (or close to)
1089-460: The melting of the ice sheets of the last ice age , but neighboring Scotland is rising by only 0.2 cm . These changes are insignificant if a local datum is used, but are statistically significant if a global datum is used. On the GRS 80 or WGS 84 spheroid at sea level at the Equator, one latitudinal second measures 30.715 m , one latitudinal minute is 1843 m and one latitudinal degree
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