The Seto Inland Sea ( 瀬戸内海 , Seto Naikai ) , sometimes shortened to the Inland Sea , is the body of water separating Honshu , Shikoku , and Kyushu , three of the four main islands of Japan . It serves as a waterway connecting the Pacific Ocean to the Sea of Japan . It connects to Osaka Bay and provides a sea transport link to industrial centers in the Kansai region , including Osaka and Kobe . Before the construction of the San'yō Main Line , it was the main transportation link between Kansai and Kyūshū.
111-522: Yamaguchi , Hiroshima , Okayama , Hyōgo , Osaka , Wakayama , Kagawa , Ehime , Tokushima , Fukuoka , and Ōita prefectures have coastlines on the Seto Inland Sea; the cities of Hiroshima , Iwakuni , Takamatsu , and Matsuyama are also located on it. The Setouchi region encompasses the sea and surrounding coastal areas. The region is known for its moderate climate, with a stable year-round temperature and relatively low rainfall levels. The sea
222-598: A reverberatory furnace which has been designated a World Heritage Site. Kawara soba (hot tile noodles) is a popular dish in Yamaguchi. It was developed during the Seinan Rebellion when soldiers cooked wild grass and meat on hot tiles. Today people in Yamaguchi create this dish by frying green tea noodles on a hot tile, and arranging a thin fried egg, stewed beef, green onions, and grilled liver on top. Akiyoshidai Quasi-National Park , which includes Japan's longest cave,
333-631: A central lagoon . Important human migrations occurred in the Pacific in prehistoric times. Modern humans first reached the western Pacific in the Paleolithic , at around 60,000 to 70,000 years ago. Originating from a southern coastal human migration out of Africa, they reached East Asia , Mainland Southeast Asia , the Philippines, New Guinea , and then Australia by making the sea crossing of at least 80 kilometres (50 mi) between Sundaland and Sahul . It
444-713: A cruise on the Setuchi. The eastern end of the Sea is now famous for the Setouchi Triennale set up in 2010 with the next event happening in 2022. Some of this takes place on the island of Naoshima , known colloquially as the art island, and the home of several permanent museums. At the far eastern extremity, as the Sea meets the Pacific Ocean, are the Naruto whirlpools that can be reached by sight-seeing boats. The Shiwaku Islands are
555-471: A defined group numbering 28 that can be reached by ferry boat from Marugame . Here Richard Henry Brunton built one of his lighthouses that can still be seen, and the grave of Frank Toovey Lake , a young midshipman in his survey party has become famous. In the central area of Seto Inland Sea is Mount Ishizuchi on Shikoku . It is the highest mountain in western Japan and the highest mountain in Shikoku . In
666-545: A local seaport on the Seto Inland Sea, and some of them were actually built. The Ministry of Railroads, later the Japanese National Railways and then Shikoku Railway Company , ran some train ferry lines between Honshū and Shikoku including the line between Uno Station (Tamano) and Takamatsu Station (Takamatsu). When the Great Seto Bridge was finished and began to serve the two coastal areas, that ferry line
777-615: A part of Kobe ) and Akashi for two years. In medieval literature, because of the Genpei War , the Seto Inland Sea is one of the important backgrounds of The Tale of the Heike , particularly in its latter part. In the Western world, Donald Richie wrote a literary nonfiction travelogue called The Inland Sea relating a journey along the sea, beginning from the East at Himeji and ending at Miyajima in
888-519: A part of Wakayama Prefecture , was appointed the Setonaikai National Park ( 瀬戸内海国立公園 , Setonaikai Kokuritsu kōen ) on March 16, 1934, as one of three oldest national parks in Japan. Itsukushima Shrine , on the island of Itsukushima in the city of Hatsukaichi , is a UNESCO World Heritage Site and one of the most famous Japanese sites outside Tokyo and Kyoto . Shōdoshima , nicknamed
999-621: Is Shimonoseki , which has the Karato Fish Market and a large fireworks festival in summer. Another attraction is the Kintai Bridge in the town of Iwakuni . This five-arched wooden structure is considered a symbol of Western Honshū. The area on the banks of the Nishiki river close to the bridge is considered among the best places in Japan for Hanami , when groups of family and friends gather in early April to view cherry blossoms. Hagi City
1110-499: Is 21,827 km (8,427 sq mi). The Seto Inland Sea is 450 km (280 mi) long from east to west. The width from south to north varies from 15 to 55 km (10 to 34 mi). In most places, the water is relatively shallow. The average depth is 38 m (125 ft); the greatest depth is 105 m (344 ft). Hydrologically, Seto Inland Sea is not a true inland sea , being neither an epeiric body of water like Hudson Bay nor an isolated endorheic basin like
1221-472: Is 4,280 m (14,040 ft; 2,340 fathoms), putting the total water volume at roughly 710,000,000 km (170,000,000 cu mi). Due to the effects of plate tectonics , the Pacific Ocean is currently shrinking by roughly 2.5 cm (1 in) per year on three sides, roughly averaging 0.52 km (0.20 sq mi) a year. By contrast, the Atlantic Ocean is increasing in size. Along
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#17331146151571332-522: Is famous for its periodic red tides ( 赤潮 , akashio ) caused by dense groupings of certain phytoplankton that result in the death of large numbers of fish. Since the 1980s, the sea's northern and southern shores have been connected by the three routes of the Honshū–Shikoku Bridge Project , including the Great Seto Bridge , which serves both railroad and automobile traffic. The International Hydrographic Organization 's definition of
1443-450: Is in the north of Yamaguchi. It is a very traditional city. The usual color of Japanese post boxes is red, but in Hagi they are painted green or brown. The Hagi Museum is modeled after a traditional samurai residence. The exhibits are detailed and realistic, and are changed every year. The permanent collection is data about Hagi's history and collections about Takasugi Shinsaku . Hagi also contains
1554-712: Is located at the western tip of Honshu with coastlines on the Sea of Japan and Seto Inland Sea , and separated from the island of Kyushu by the Kanmon Straits . Yamaguchi Prefecture was created by the merger of the provinces of Suō and Nagato . During the rise of the samurai class during the Heian and Kamakura Periods (794–1333), the Ouchi family of Suō Province and the Koto family of Nagato Province gained influence as powerful warrior clans. In
1665-491: Is not known with any certainty what level of maritime technology was used by these groups – the presumption is that they used large bamboo rafts which may have been equipped with some sort of sail. The reduction in favourable winds for a crossing to Sahul after 58,000 B.P. fits with the dating of the settlement of Australia, with no later migrations in the prehistoric period. The seafaring abilities of pre-Austronesian residents of Island South-east Asia are confirmed by
1776-598: Is the largest and deepest of Earth's five oceanic divisions . It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica ) in the south, and is bounded by the continents of Asia and Australia in the west and the Americas in the east. At 165,250,000 square kilometers (63,800,000 square miles) in area (as defined with a southern Antarctic border), this largest division of
1887-649: The 2015 election , the LDP won a majority. Liberal Democrats form several parliamentary groups together with independents. As of June 8, 2015, the assembly is composed as follows: LDP 24 members, LDP Shinseikai 5, Kōmeitō 5, DPJ/Rengō no Kai 4, LDP Kensei Club 2, JCP 2, SDP /Citizens League 2, and the independent "groups" shinsei club , mushozoku no kai and kusa no ne have one member each. 34°4′N 131°30′E / 34.067°N 131.500°E / 34.067; 131.500 Pacific Ocean Main five oceans division: Further subdivision: The Pacific Ocean
1998-563: The Akashi Kaikyo Bridge (the second-longest suspension bridge in the world) to Awaji Island , from there via the Ōnaruto Bridge to Ōge-jima ( Naruto , Tokushima Prefecture ) beyond the 1.3-kilometer wide Naruto Strait and finally across the Muya Bridge to Shikoku . The Great Seto Bridge connects Okayama Prefecture with Kagawa Prefecture since 1988. It consists of a total of six two-storey bridges, whose lower floors are used by
2109-620: The Americas , although evidence for this remains inconclusive. The first contact of European navigators with the western edge of the Pacific Ocean was made by the Portuguese expeditions of António de Abreu and Francisco Serrão , via the Lesser Sunda Islands , to the Maluku Islands , in 1512, and with Jorge Álvares 's expedition to southern China in 1513, both ordered by Afonso de Albuquerque from Malacca . The eastern side of
2220-424: The Americas , more than 25,000 islands, large and small, rise above the surface of the Pacific Ocean. Multiple islands were the shells of former active volcanoes that have lain dormant for thousands of years. Close to the equator, without vast areas of blue ocean, are a dot of atolls that have over intervals of time been formed by seamounts as a result of tiny coral islands strung in a ring within surroundings of
2331-510: The Bering Sea in the Arctic to the northern extent of the circumpolar Southern Ocean at 60°S (older definitions extend it to Antarctica 's Ross Sea ), the Pacific reaches its greatest east–west width at about 5°N latitude , where it stretches approximately 19,800 km (12,300 mi) from Indonesia to the coast of Colombia – halfway around the world, and more than five times
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#17331146151572442-648: The Caspian Sea . Rather, it is actually a marginal sea : a division of a wider ocean (in this case the Pacific) which is partially enclosed by islands, archipelagos, or peninsulas (here, the Japanese Home Islands), adjacent to or widely open to the open ocean at the surface. The Naruto Strait connects the eastern part of the Seto Inland Sea to the Kii Channel , which in turn connects to the Pacific. The western part of
2553-498: The Chūgoku region of Honshu . Yamaguchi Prefecture has a population of 1,377,631 (1 February 2018) and has a geographic area of 6,112 km (2,359 sq mi ). Yamaguchi Prefecture borders Shimane Prefecture to the north and Hiroshima Prefecture to the northeast. Yamaguchi is the capital and Shimonoseki is the largest city of Yamaguchi Prefecture, with other major cities including Ube , Shūnan , and Iwakuni . Yamaguchi Prefecture
2664-581: The Meiji Restoration in which lower-rank nobility from Chōshū played a major role, many politicians from Yamaguchi have held important positions in national politics. In the post-war era, the most prominent political family from Yamaguchi is the Kishi - Abe / Satō prime ministerial dynasty, and Yamaguchi is leaning solidly towards the Liberal Democratic Party (LDP). Since the electoral reform of
2775-524: The Muromachi period (1336—1573), Ouchi Hiroyo , the 24th ruler of the Ouchi family conquered both areas of Yamaguchi Prefecture. The Ouchi clan imitated the city planning of Kyoto . They gained great wealth through cultural imports from the continent and trade with Korea and Ming Dynasty China. As a result, Yamaguchi came to be known as the "Kyoto of the West," and Ouchi culture flourished. Sue Harutaka defeated
2886-583: The Pacific War ; however, by the end of that war, Japan was defeated and the U.S. Pacific Fleet was the virtual master of the ocean. The Japanese-ruled Northern Mariana Islands came under the control of the United States. Since the end of World War II, many former colonies in the Pacific have become independent states . The Pacific separates Asia and Australia from the Americas. It may be further subdivided by
2997-708: The Sirena Deep , is also located in the Mariana Trench. The western Pacific has many major marginal seas , including the Philippine Sea , South China Sea , East China Sea , Sea of Japan , Sea of Okhotsk , Bering Sea , Gulf of Alaska , Gulf of California , Mar de Grau , Tasman Sea , and the Coral Sea . In the early 16th century , Spanish explorer Vasco Núñez de Balboa crossed the Isthmus of Panama in 1513 and sighted
3108-693: The Southern Hemisphere . The North Equatorial Current , driven westward along latitude 15°N by the trade winds , turns north near the Philippines to become the warm Japan or Kuroshio Current . Turning eastward at about 45°N , the Kuroshio forks and some water moves northward as the Aleutian Current , while the rest turns southward to rejoin the North Equatorial Current. The Aleutian Current branches as it approaches North America and forms
3219-683: The Southwest Pacific around Oceania . The Pacific Ocean's mean depth is 4,000 meters (13,000 feet). Challenger Deep in the Mariana Trench , located in the northwestern Pacific, is the deepest known point in the world, reaching a depth of 10,928 meters (35,853 feet). The Pacific also contains the deepest point in the Southern Hemisphere , the Horizon Deep in the Tonga Trench , at 10,823 meters (35,509 feet). The third deepest point on Earth,
3330-662: The Strait of Magellan to the Philippines , the explorer indeed found the ocean peaceful; however, the Pacific is not always peaceful. Many tropical storms batter the islands of the Pacific. The lands around the Pacific Rim are full of volcanoes and often affected by earthquakes . Tsunamis , caused by underwater earthquakes, have devastated many islands and in some cases destroyed entire towns. The Martin Waldseemüller map of 1507
3441-772: The Western Hemisphere . The Southern Pacific Ocean harbors the Southeast Indian Ridge crossing from south of Australia turning into the Pacific-Antarctic Ridge (north of the South Pole ) and merges with another ridge (south of South America) to form the East Pacific Rise which also connects with another ridge (south of North America) which overlooks the Juan de Fuca Ridge . For most of Magellan's voyage from
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3552-654: The World Ocean and the hydrosphere covers about 46% of Earth's water surface and about 32% of the planet's total surface area, larger than its entire land area (148,000,000 km (57,000,000 sq mi)). The centers of both the Water Hemisphere and the Western Hemisphere , as well as the oceanic pole of inaccessibility , are in the Pacific Ocean. Ocean circulation (caused by the Coriolis effect ) subdivides it into two largely independent volumes of water that meet at
3663-516: The Yosan Main Railroad Line in Shikoku (both completed before World War II ) and three series of bridges connecting Honshū and Shikoku (completed in the late 20th century). The Seto Inland Sea is still used, however, by an international cargo transport line and several local transport lines connecting Honshū with Shikoku and Kyūshū. Major cities with heavy industrial activity on the coast of
3774-566: The crab claw sail ) – it is likely that the progressive development of these technologies were related to the later steps of settlement into Near and Remote Oceania. Starting at around 2200 BCE, Austronesians sailed southwards to settle the Philippines . From, probably, the Bismarck Archipelago they crossed the western Pacific to reach the Marianas Islands by 1500 BCE, as well as Palau and Yap by 1000 BCE. They were
3885-929: The equator , the North Pacific Ocean and the South Pacific Ocean (or more loosely the South Seas ). The Pacific Ocean can also be informally divided by the International Date Line into the East Pacific and the West Pacific , which allows it to be further divided into four quadrants, namely the Northeast Pacific off the coasts of North America , the Southeast Pacific off South America , Northwest Pacific off Far Eastern / Pacific Asia , and
3996-565: The "island of olives", and the Naruto whirlpools are two other well-known tourist sites. Neighboring locations like Kotohira and Okayama are often combined with the tour of the Setouchi region. Some historic sites, including Yashima in Takamatsu and Kurashiki , also attract many visitors. Hiroshima is the neighbor city to Itsukushima Shrine and another UNESCO World Heritage Site because of atomic bomb damage in 1945. Idol Unit STU48 operate on
4107-501: The 1990s, Yamaguchi elects four members directly to the House of Representatives . Three of the new single-member districts have been held exclusively by Liberal Democrats as of 2013, the easternmost district bordering Hiroshima was initially won by Shinji Satō (Eisaku Satō's son) in 1996, but went to Democrat Hideo Hiraoka in several later elections. Currently, following the 2021 general election, Yamaguchi's directly elected delegation to
4218-926: The 2nd Abe Cabinet, and following the April 2013 by-election to replace Nobuo Kishi, Kiyoshi Ejima (LDP, 1st term, up in 2016), former mayor of Shimonoseki city. The current governor of Yamaguchi is former MIC bureaucrat Tsugumasa Muraoka . He won the gubernatorial election in February 2014 with more than 60% of the vote against other two candidates, and succeeded Shigetarō Yamamoto who had been hospitalized since October 2013 and resigned in January 2014. Elected governors of Yamaguchi have been: The Yamaguchi Prefectural Assembly [ ja ] has 47 members, elected in unified local elections in 15 electoral districts: 5 single-member districts, four two-member districts and six districts that elect each between four and nine members. In
4329-727: The 31st ruler of the Ouchi clan. The Sue clan was then defeated by Mōri Motonari , and the Mōri family gained control of the Chūgoku region . Yamaguchi was ruled as part of the Mōri clan domain during the Sengoku period . Mōri Terumoto was then defeated by Tokugawa Ieyasu in the battle of Sekigahara in 1600. He was forced to give up all his land except for the Suō and Nagato areas (current-day Yamaguchi Prefecture), where he built his castle in Hagi . Mōri sought to strengthen
4440-399: The Akiyoshido ( 秋芳洞 ) , is another popular destination. Two ferry services provide regular sea transport from the Shimonoseki Port International Terminal: Kanpu Ferry provides round-trip service to Busan , South Korea; the Orient Ferry provides round-trip service to Qingdao and Shanghai , respectively. Yamaguchi Prefecture has alliances with the following five districts. Since
4551-414: The Atlantic, the Strait of Magellan was at times patrolled by fleets sent to prevent the entrance of non-Spanish ships. On the western side of the Pacific Ocean the Dutch threatened the Spanish Philippines . The 18th century marked the beginning of major exploration by the Russians in Alaska and the Aleutian Islands , such as the First Kamchatka expedition and the Great Northern Expedition , led by
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4662-405: The Atlantic. The andesite line is the most significant regional distinction in the Pacific. A petrologic boundary, it separates the deeper, mafic igneous rock of the Central Pacific Basin from the partially submerged continental areas of felsic igneous rock on its margins. The andesite line follows the western edge of the islands off California and passes south of the Aleutian arc , along
4773-433: The Chilean coast, the South Equatorial Current divides; one branch flows around Cape Horn and the other turns north to form the Peru or Humboldt Current . The climate patterns of the Northern and Southern Hemispheres generally mirror each other. The trade winds in the southern and eastern Pacific are remarkably steady while conditions in the North Pacific are far more varied with, for example, cold winter temperatures on
4884-499: The Danish-born Russian navy officer Vitus Bering . Spain also sent expeditions to the Pacific Northwest , reaching Vancouver Island in southern Canada, and Alaska. The French explored and colonized Polynesia , and the British made three voyages with James Cook to the South Pacific and Australia, Hawaii , and the North American Pacific Northwest . In 1768, Pierre-Antoine Véron , a young astronomer accompanying Louis Antoine de Bougainville on his voyage of exploration, established
4995-498: The Moluccas, between 1525 and 1527, Portuguese expeditions encountered the Caroline Islands , the Aru Islands , and Papua New Guinea . In 1542–43 the Portuguese also reached Japan. In 1564, five Spanish ships carrying 379 soldiers crossed the ocean from Mexico led by Miguel López de Legazpi , and colonized the Philippines and Mariana Islands . For the remainder of the 16th century, Spain maintained military and mercantile control, with ships sailing from Mexico and Peru across
5106-429: The Pacific Ocean to the Philippines via Guam , and establishing the Spanish East Indies . The Manila galleons operated for two and a half centuries, linking Manila and Acapulco , in one of the longest trade routes in history. Spanish expeditions also arrived at Tuvalu , the Marquesas , the Cook Islands , the Solomon Islands , Vanuatu , the Marshalls and the Admiralty Islands in the South Pacific. Later, in
5217-399: The Pacific Ocean's irregular western margins lie many seas, the largest of which are the Celebes Sea , Coral Sea , East China Sea (East Sea), Philippine Sea , Sea of Japan , South China Sea (South Sea), Sulu Sea , Tasman Sea , and Yellow Sea (West Sea of Korea). The Indonesian Seaway (including the Strait of Malacca and Torres Strait ) joins the Pacific and the Indian Ocean to
5328-402: The Pacific in recorded history. They were part of a Spanish expedition to the Spice Islands that would eventually result in the first world circumnavigation . Magellan called the ocean Pacífico (or "Pacific" meaning, "peaceful") because, after sailing through the stormy seas off Cape Horn , the expedition found calm waters. The ocean was often called the Sea of Magellan in his honor until
5439-421: The Pacific. Development of land transportation shifted the travel between east and west — that is, between Honshū and Kyūshū — to railroad and road transport. Two coastal railways, San'yō Main Line in Honshū and Yosan Main Line, were built. Those railway lines stimulated the local economy and once invoked a rail mania. Many short railroads were planned to connect a certain station of those two lines and
5550-540: The Philippines already in 7000 BCE. Additional earlier migrations into Insular Southeast Asia, associated with Austroasiatic-speakers from Mainland Southeast Asia, are estimated to have taken place already in 15000 BCE. At around 1300 to 1200 BCE, a branch of the Austronesian migrations known as the Lapita culture reached the Bismarck Archipelago , the Solomon Islands , Vanuatu , Fiji , and New Caledonia . From there, they settled Tonga and Samoa by 900 to 800 BCE. Some also back-migrated northwards in 200 BCE to settle
5661-405: The Sea of Japan. Many ships navigated from its coastal areas to the area along the Sea of Japan. Major ports in the Edo period were Osaka, Sakai, Shimotsui, Ushimado , and Tomonoura. The Seto Inland Sea also served many daimyōs in the western area of Japan as their route to and from Edo , to fulfill their obligations under sankin-kōtai . Many used ships from Osaka. Thanks to transport through
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#17331146151575772-416: The Seto Inland Sea Mir. Author and literary critic Amy Chavez's The Widow, the Priest and the Octopus Hunter: Discovering a Lost Way of Life on a Secluded Japanese Island is an account of the author's firsthand experience living among and interacting with the residents of Shiraishi. Yamaguchi Prefecture Yamaguchi Prefecture ( 山口県 , Yamaguchi-ken ) is a prefecture of Japan located in
5883-445: The Seto Inland Sea as transport line served four coastal areas: Kansai, Chūgoku, Shikoku, and eastern Kyūshū. The Seto Inland Sea provided each of these regions with local transportation and connected each region to the others and far areas, including the coastal area of the Sea of Japan, Korea, and China. After Kobe port was founded in 1868 to serve foreign ships, the Seto Inland Sea became a major international waterway with connection to
5994-462: The Seto Inland Sea connects to the Sea of Japan through the Kanmon Straits and to the Pacific through the Bungo Channel . Each part of the Seto Inland Sea has a separate name in Japanese. For example, Iyo-nada ( 伊予灘 ) refers to the strait between Ehime, Yamaguchi, and Ōita prefectures in the western portion of the sea; Aki-nada ( 安芸灘 ) is the open expanse west of the Geiyo Islands , near Hiroshima prefecture; and Suō-nada ( 周防灘 ) refers to
6105-519: The Seto Inland Sea include Osaka, Kobe, and Hiroshima. Smaller scale manufacturing and industry can also be found in Kurashiki , Kure , Fukuyama , and Ube in Honshū, and Sakaide , Imabari , and Niihama in Shikoku. Major industries include steel production, vehicle manufacture, ship building, textiles, and since the 1960s, oil refining and chemical products. Imabari Shipbuilding , Japan's largest ship building company, has its headquarters and some of its yards in Imabari, Ehime Prefecture. Thanks to
6216-415: The Seto Inland Sea is one of the most famous tourist destinations in Japan. Even before Japan opened to foreigners in the middle of the 19th century, the sea's beauty was praised and introduced to the Western world by those who visited Japan, including Philipp Franz von Siebold , and after the country's opening, Ferdinand von Richthofen and Thomas Cook . Its coastal area, except for Osaka Prefecture and
6327-428: The Seto Inland Sea, Osaka became the economic center of Japan. Each han had an office called Ozakayashiki in Osaka. These Ozakayashiki were among Japan's earliest forms of banks, facilitating domestic trade and helping to organize the income of the daimyo , which was in the form of koku , giant bales of rice. The Seto Inland Sea was also part of the official Chosendentsushi route, bringing Korean emissaries to
6438-528: The United States. Significant contributions to oceanographic knowledge were made by the voyages of HMS Beagle in the 1830s, with Charles Darwin aboard; HMS Challenger during the 1870s; the USS Tuscarora (1873–76); and the German Gazelle (1874–76). In Oceania, France obtained a leading position as imperial power after making Tahiti and New Caledonia protectorates in 1842 and 1853, respectively. After navy visits to Easter Island in 1875 and 1887, Chilean navy officer Policarpo Toro negotiated
6549-484: The West, close to Hiroshima, going from island to island, exploring the landscape, meeting and discussing with local people, as well as musing on Japanese culture, the nature of travel and of identity, and his own personal sense of identity. In 1991, filmmakers Lucille Carra and Brian Cotnoir produced a film version of Richie's book, which further explored the region through interviews and images photographed by Hiro Narita. Produced by Travelfilm Company and adapted by Carra,
6660-416: The andesite line and include New Guinea, the islands of New Zealand, and the Philippines. Some of these islands are structurally associated with nearby continents. High islands are of volcanic origin, and many contain active volcanoes. Among these are Bougainville , Hawaii, and the Solomon Islands. The coral reefs of the South Pacific are low-lying structures that have built up on basaltic lava flows under
6771-408: The andesite line. Within the closed loop of the andesite line are most of the deep troughs, submerged volcanic mountains, and oceanic volcanic islands that characterize the Pacific basin. Here basaltic lavas gently flow out of rifts to build huge dome-shaped volcanic mountains whose eroded summits form island arcs, chains, and clusters. Outside the andesite line, volcanism is of the explosive type, and
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#17331146151576882-409: The arctic, icing from October to May can present a hazard for shipping while persistent fog occurs from June to December. A climatological low in the Gulf of Alaska keeps the southern coast wet and mild during the winter months. The Westerlies and associated jet stream within the Mid-Latitudes can be particularly strong, especially in the Southern Hemisphere, due to the temperature difference between
6993-421: The base of a counter-clockwise circulation in the Bering Sea . Its southern arm becomes the chilled slow, south-flowing California Current . The South Equatorial Current , flowing west along the equator, swings southward east of New Guinea , turns east at about 50°S , and joins the main westerly circulation of the South Pacific, which includes the Earth-circling Antarctic Circumpolar Current . As it approaches
7104-429: The coastal village of Fukuhara (today Kobe ) to promote trade between Japan and the Song dynasty of China. This transfer was unsuccessful, and soon after Kyoto became the capital again. Later, the Battle of Yashima took place off the coast of present-day Takamatsu. In the Edo period , the Seto Inland Sea was one of the busiest transport lines in Japan. It was a part of a navigational route around Japan's islands via
7215-484: The creation of major highways such as the Nankaidō and San'yōdō , the Seto Inland Sea remained a major transport route. There are records that some foreign emissaries from China and Korea sailed on the Seto Inland Sea. The importance of water traffic gave rise to private navies in the region. In many documents, these navies were called suigun ( 水軍 , "water army") , or simply pirates. Sometimes they were considered to be public enemies, but in most cases they were granted
7326-408: The diameter of the Moon. Its geographic center is in eastern Kiribati south of Kiritimati , just west from Starbuck Island at 4°58′S 158°45′W / 4.97°S 158.75°W / -4.97; -158.75 . The lowest known point on Earth – the Mariana Trench – lies 10,911 m (35,797 ft ; 5,966 fathoms ) below sea level. Its average depth
7437-402: The difference between temperatures aloft and sea surface temperatures is the greatest; however, each particular basin has its own seasonal patterns. On a worldwide scale, May is the least active month, while September is the most active month. November is the only month in which all the tropical cyclone basins are active. The Pacific hosts the two most active tropical cyclone basins , which are
7548-434: The east and the islands of Kiribati in the southeast. Melanesia, to the southwest, includes New Guinea , the world's second largest island after Greenland and by far the largest of the Pacific islands. The other main Melanesian groups from north to south are the Bismarck Archipelago , the Solomon Islands , Santa Cruz , Vanuatu , Fiji and New Caledonia . The largest area, Polynesia , stretching from Hawaii in
7659-423: The east coast of Russia contrasting with the milder weather off British Columbia during the winter months due to the preferred flow of ocean currents . In the tropical and subtropical Pacific, the El Niño Southern Oscillation (ENSO) affects weather conditions. To determine the phase of ENSO, the most recent three-month sea surface temperature average for the area approximately 3,000 km (1,900 mi) to
7770-403: The eastern edge of the Kamchatka Peninsula , the Kuril Islands , Japan, the Mariana Islands , the Solomon Islands , and New Zealand's North Island . The dissimilarity continues northeastward along the western edge of the Andes Cordillera along South America to Mexico, returning then to the islands off California. Indonesia, the Philippines, Japan, New Guinea, and New Zealand lie outside
7881-421: The economic base of the region and increase local production with his Three Whites campaign (salt, rice, and paper). After Commodore Matthew Perry 's opening of Japan , clans from Nagato (also called Chōshū ) played a key role in the fall of the Tokugawa shogunate and the establishment of the new imperial government. Four years after the Edo Shogunate was overthrown and the Meiji government formed in 1868,
7992-558: The eighteenth century. Magellan stopped at one uninhabited Pacific island before stopping at Guam in March 1521. Although Magellan himself died in the Philippines in 1521, Spanish navigator Juan Sebastián Elcano led the remains of the expedition back to Spain across the Indian Ocean and round the Cape of Good Hope , completing the first world circumnavigation in 1522. Sailing around and east of
8103-634: The equator into northern (North Pacific) and southern (South Pacific) portions. It extends from the Antarctic region in the South to the Arctic in the north. The Pacific Ocean encompasses approximately one-third of the Earth's surface, having an area of 165,200,000 km (63,800,000 sq mi) – larger than Earth's entire landmass combined, 150,000,000 km (58,000,000 sq mi). Extending approximately 15,500 km (9,600 mi) from
8214-585: The equator, which can have a salinity as low as 34 parts per thousand, is less salty than that found in the mid-latitudes because of abundant equatorial precipitation throughout the year. The lowest counts of less than 32 parts per thousand are found in the far north as less evaporation of seawater takes place in these frigid areas. The motion of Pacific waters is generally clockwise in the Northern Hemisphere (the North Pacific gyre ) and counter-clockwise in
8325-457: The expanse between Yamaguchi prefecture and Suō-Ōshima . These areas are sometimes styled Iyonada, Akinada, and Suonada. There are also many straits located between the major islands, as well as a number of smaller ones that pass between islands or connect the Seto Inland Sea to other seas or the Pacific . Almost 3,000 islands are located in the Seto Inland Sea. The largest island is Awaji-shima , and
8436-735: The film won numerous awards, including Best Documentary at the Hawaii International Film Festival (1991) and the Earthwatch Film Award. It screened at the Sundance Film Festival in 1992. Koushun Takami 's novel Battle Royale took place on a fictional island in the Seto Inland Sea. A critical plot element of the Japanese series Fafner in the Azure is an alien life form discovered at the bottom of this sea known as
8547-586: The first completely documented European landing in Australia (1606), in Cape York Peninsula , and Abel Janszoon Tasman circumnavigated and landed on parts of the Australian continental coast and arrived at Tasmania and New Zealand in 1642. In the 16th and 17th centuries, Spain considered the Pacific Ocean a mare clausum – a sea closed to other naval powers. As the only known entrance from
8658-469: The first humans to reach Remote Oceania , and the first to cross vast distances of open water. They also continued spreading southwards and settling the rest of Maritime Southeast Asia , reaching Indonesia and Malaysia by 1500 BCE, and further west to Madagascar and the Comoros in the Indian Ocean by around 500 CE. More recently, it is suggested that Austronesians expanded already earlier, arriving in
8769-523: The great "Southern Sea" which he named Mar del Sur (in Spanish). Afterwards, the ocean's current name was coined by Portuguese explorer Ferdinand Magellan during the Spanish circumnavigation of the world in 1521, as he encountered favorable winds on reaching the ocean. He called it Mar Pacífico , which in Portuguese means 'peaceful sea'. Top large seas: Across the continents of Asia, Australia and
8880-439: The incorporation of the island into Chile with native Rapanui in 1888. By occupying Easter Island, Chile joined the imperial nations. By 1900 nearly all Pacific islands were in control of Britain, France, United States, Germany, Japan, and Chile. Although the United States gained control of Guam and the Philippines from Spain in 1898, Japan controlled most of the western Pacific by 1914 and occupied many other islands during
8991-764: The island of Awazi , through this island to Sio Saki (34°11'N) and on to Oiso Saki in Sikoku . On the South ( Bungo Suidô ). A line joining Sada Misaki (33°20'N) in Sikoku and Seki Saki in Kyûsyû. The range of the Seto Inland Sea by the Territorial Sea Law ( 領海及び接続水域に関する法律 ) is 19,700 km (7,600 sq mi). The range of the Seto Inland Sea according to the Setouchi Law and the Setouchi Law Enforcement Order
9102-590: The islands in the world. There are about 25,000 islands in the Pacific Ocean. The islands entirely within the Pacific Ocean can be divided into three main groups known as Micronesia , Melanesia and Polynesia . Micronesia, which lies north of the equator and west of the International Date Line , includes the Mariana Islands in the northwest, the Caroline Islands in the center, the Marshall Islands to
9213-730: The islands of eastern Micronesia (including the Carolines , the Marshall Islands , and Kiribati ), mixing with earlier Austronesian migrations in the region. This remained the furthest extent of the Austronesian expansion into Polynesia until around 700 CE when there was another surge of island exploration. They reached the Cook Islands , Tahiti , and the Marquesas by 700 CE; Hawaiʻi by 900 CE; Rapa Nui by 1000 CE; and finally New Zealand by 1200 CE. Austronesians may have also reached as far as
9324-527: The last ice age , the sea level was lower than today. After the ice age, sea water poured into a basin between the Chūgoku mountains and Shikoku mountains and formed the Seto Inland Sea as it is known today. From ancient times, the Seto Inland Sea served as a main transport line between its coastal areas, including what is today the Kansai region and Kyushu . It was also a main transport line between Japan and other countries, including Korea and China. Even after
9435-600: The limits of the Seto Inland Sea (published in 1953) is as follows: On the West. The southeastern limit of the Japan Sea [In Shimonoseki-kaikyo . A line running from Nagoya Saki (130°49'E) in Kyûsû through the islands of Uma Sima and Muture Simia (33°58',5N) to Murasaki Hana (34°01'N) in Honsyû ]. On the East ( Kii Suidô ). A line running from Takura Saki (34°16'N) in Honsyû to Oishi Hana in
9546-463: The lower house consists of former LDP vice president Masahiko Kōmura ( 1st district , 12th term), the chairman of the foreign affairs committee, Nobuo Kishi (2nd district, 2nd term, former two-term member of the House of Councillors), and the chairman of the House of Representatives rules committee (as of 190th Diet, January 2016), Yoshimasa Hayashi (3rd district, 1st term). The seat for the 4th district
9657-433: The moderate climate and beautiful landscape, fishing, agriculture, and tourism bring a lot of income to the area as well. Today the Seto Inland Sea serves its coastal areas mainly for two purposes: first, international or domestic cargo transportation, and second, local transportation between coastal areas and islands on the sea. Major ports are Kobe, Okayama, Takamatsu , Tokushima, Matsuyama, and Hiroshima. Historically,
9768-585: The north to New Zealand in the south, also encompasses Tuvalu , Tokelau , Samoa , Tonga and the Kermadec Islands to the west, the Cook Islands , Society Islands and Austral Islands in the center, and the Marquesas Islands , Tuamotu , Mangareva Islands , and Easter Island to the east. Islands in the Pacific Ocean are of four basic types: continental islands, high islands, coral reefs and uplifted coral platforms. Continental islands lie outside
9879-603: The northern Philippines , but also earlier groups associated with Austroasiatic-speakers , resulting in the modern peoples of Island Southeast Asia and Oceania. A later seaborne migration is the Neolithic Austronesian expansion of the Austronesian peoples . Austronesians originated from the island of Taiwan c. 3000 –1500 BCE. They are associated with distinctive maritime sailing technologies (notably outrigger boats , catamarans , lashed-lug boats, and
9990-557: The northwestern Pacific and the eastern Pacific. Pacific hurricanes form south of Mexico, sometimes striking the western Mexican coast and occasionally the Southwestern United States between June and October, while typhoons forming in the northwestern Pacific moving into southeast and east Asia from May to December. Tropical cyclones also form in the South Pacific basin , where they occasionally impact island nations. In
10101-399: The ocean was encountered by Spanish explorer Vasco Núñez de Balboa in 1513 after his expedition crossed the Isthmus of Panama and reached a new ocean. He named it Mar del Sur ("Sea of the South" or "South Sea" ) because the ocean was to the south of the coast of the isthmus where he first observed the Pacific. In 1520, navigator Ferdinand Magellan and his crew were the first to cross
10212-549: The ocean's surface. One of the most dramatic is the Great Barrier Reef off northeastern Australia with chains of reef patches. A second island type formed of coral is the uplifted coral platform, which is usually slightly larger than the low coral islands. Examples include Banaba (formerly Ocean Island) and Makatea in the Tuamotu group of French Polynesia . The volume of the Pacific Ocean, representing about 50.1 percent of
10323-490: The post-World War II Shōwa Period , Yamaguchi developed into one of the most industrialized prefectures in the country due to the establishment of petrochemical complexes. As of April 1, 2012, 7% of the total land area of the prefecture was designated as Natural Parks , namely the Setonaikai National Park ; Akiyoshidai , Kita-Nagato Kaigan , and Nishi-Chūgoku Sanchi Quasi-National Parks; and Chōmonkyō , Iwakiyama , Rakanzan , and Toyota Prefectural Natural Parks. For
10434-524: The present Yamaguchi Prefecture was established. The Meiji government brought in many new systems and modern policies, and promoted the introduction of modern industry, though the prefecture was still centered on agriculture during this period. In the Taishō period , from 1912 to 1926, shipbuilding, chemical, machinery, and metal working plants were built in Yamaguchi's harbors in the Seto Inland Sea area. During
10545-465: The purposes of development analysis, Yamaguchi is construed to be part of Northern Kyushu . Although Yamaguchi is not part of the island of Kyushu , it has become a functional satellite of the Kanmon Straits metropolitan area. Per Japanese census data, Yamaguchi prefecture has had negative population growth from 1955 to 1973 and 1985–onwards, today at edge of having less than 1940 population leaving elderly behind. The most popular place for tourism
10656-569: The quest for Terra Australis ("the [great] Southern Land"), Spanish explorations in the 17th century, such as the expedition led by the Portuguese navigator Pedro Fernandes de Queirós , arrived at the Pitcairn and Vanuatu archipelagos, and sailed the Torres Strait between Australia and New Guinea, named after navigator Luís Vaz de Torres . Dutch explorers, sailing around southern Africa, also engaged in exploration and trade; Willem Janszoon , made
10767-796: The railway ( Japan Railways Group ). The high speed Shinkansen does not go to or on Shikoku. This is the first of three intersections of the Seto Inland Sea. Construction started in 1975, but was fully completed in 1999. It connects the Nishiseto- Onomichi Highway in Hiroshima Prefecture with a total of ten bridges and several smaller islands with Imabari in Ehime Prefecture . Approximately 100,000 people live on those islands. The bridges are: Shin Onomichi Bridge, Innoshima Bridge , Ikuchi Bridge, Tatara Bridge , Ōmishima Bridge,
10878-518: The right to self-governance as a result of their strength. During the feudal period, suigun seized power in most coastal areas. The Kono in Iyo Province (today Ehime Prefecture ) and Kobayakawa (later Mōri ) in Aki Province (today a part of Hiroshima Prefecture ) clans were two of the more famous suigun lords. In the 12th century, Taira no Kiyomori planned to move the capital from Kyoto to
10989-454: The second largest is Shōdo-shima . Many of the smaller islands are uninhabited. Over 500 marine species are known to live in the Seto Inland Sea. Examples are the ayu , an amphidromous fish, horseshoe crab , finless porpoise , and great white shark , which has occasionally attacked people in the Seto Inland Sea. In the past, whales entered the sea to feed or breed, however because of whaling and pollution, they are rarely seen. During
11100-500: The settlement of Buka by 32,000 B.P. and Manus by 25,000 B.P. Journeys of 180 kilometres (110 mi) and 230 kilometres (140 mi) are involved, respectively. The descendants of these migrations today are the Negritos , Melanesians , and Indigenous Australians . Their populations in maritime Southeast Asia , coastal New Guinea , and Island Melanesia later intermarried with the incoming Austronesian settlers from Taiwan and
11211-679: The shogunate. After the Meiji Restoration , the coastal cities along the Seto Inland Sea were rapidly industrialized. One of the headquarters of the Japanese Navy was built in the town of Kure . Since the Meiji period, development of land transport has been reducing the importance of the Seto Inland Sea as a transport line. Remarkable land transportation innovations include the San'yō Main Railroad Line in Honshū and
11322-500: The southeast of Hawaii is computed, and if the region is more than 0.5 °C (0.9 °F) above or below normal for that period, then an El Niño or La Niña is considered in progress. In the tropical western Pacific, the monsoon and the related wet season during the summer months contrast with dry winds in the winter which blow over the ocean from the Asian landmass. Worldwide, tropical cyclone activity peaks in late summer, when
11433-786: The tropics and Antarctica, which records the coldest temperature readings on the planet. In the Southern hemisphere, because of the stormy and cloudy conditions associated with extratropical cyclones riding the jet stream, it is usual to refer to the Westerlies as the Roaring Forties, Furious Fifties and Shrieking Sixties according to the varying degrees of latitude. The ocean was first mapped by Abraham Ortelius ; he called it Maris Pacifici following Ferdinand Magellan 's description of it as "a pacific sea" during his circumnavigation from 1519 to 1522. To Magellan, it seemed much more calm (pacific) than
11544-547: The two Ōshima bridges and the three Kurushima Kaikyo bridges. The Kurushima Kaikyō Bridge connects the island of Ōshima to the main island of Shikoku . The Akinada Tobishima Kaido route connects seven of the western Geiyo Islands to mainland Honshu near Kure, Hiroshima . Seto Naikai Pilots Area provides compulsory maritime piloting for vessels over 10,000 tones, it was divided into sections of Bisanseto and sections of Kurushima , connecting Kanmon Channel Piloting Area and Osaka Bay Piloting Area. The coastal area of
11655-566: The west, and Drake Passage and the Strait of Magellan link the Pacific with the Atlantic Ocean on the east. To the north, the Bering Strait connects the Pacific with the Arctic Ocean . As the Pacific straddles the 180th meridian , the West Pacific (or western Pacific , near Asia) is in the Eastern Hemisphere , while the East Pacific (or eastern Pacific , near the Americas) is in
11766-766: The western end of the Sea is Mimosusogawa Park ( ja:みもすそ川公園 ) in Shimonoseki . It commemorates the final stage of the Genpei war between the feudal Taira clan and Minamoto clan (1180–1185). Some sites along the Seto Inland Sea were featured in eighth-century Japanese literature, both in prose and in verse, including Kojiki , Nihon Shoki , and Man'yōshū . Since some sites were used as places of exile, their feeling and landscape were evoked in waka . In fiction, in The Tale of Genji , Genji fled from Kyoto and resided in Suma (now
11877-581: The width of the Pacific with precision for the first time in history. One of the earliest voyages of scientific exploration was organized by Spain in the Malaspina Expedition of 1789–1794. It sailed vast areas of the Pacific, from Cape Horn to Alaska, Guam and the Philippines, New Zealand, Australia, and the South Pacific. Growing imperialism during the 19th century resulted in the occupation of much of Oceania by European powers, and later Japan and
11988-434: The world's oceanic water, has been estimated at some 714 million cubic kilometers (171 million cubic miles). Surface water temperatures in the Pacific can vary from −1.4 °C (29.5 °F), the freezing point of seawater, in the poleward areas to about 30 °C (86 °F) near the equator. Salinity also varies latitudinally, reaching a maximum of 37 parts per thousand in the southeastern area. The water near
12099-467: Was abolished. The main islands Honshū and Shikoku are connected by three series of bridges since the late 1980s. This improves land transportation between the connected islands. These series of bridges, collectively known as the Honshū–Shikoku Bridge Project , are, from east to west, Akashi Kaikyo Bridge , Great Seto Bridge , and Nishiseto Expressway . The easternmost highway was built between 1976 and 1998. It leads from Akashi ( Hyōgo Prefecture ) on
12210-482: Was held by former prime minister Shinzo Abe until his assassination in 2022, and is currently vacant. For the proportional representation segment of the House of Representatives, Yamaguchi forms part of the Chūgoku block . In the House of Councillors , Yamaguchi is represented by two members, making it one of the currently 31 winner-take-all single-member districts. As of 2013, the two members are Yoshimasa Hayashi (LDP, 4th term, up in 2019), agriculture minister in
12321-572: Was the first to show the Americas separating two distinct oceans. Later, the Diogo Ribeiro map of 1529 was the first to show the Pacific at about its proper size. (Inhabited dependent territories are denoted by the asterisk (*), with names of the corresponding sovereign states in round brackets. Associated states in the Realm of New Zealand are denoted by the hash sign (#).) Territories with no permanent civilian population. The Pacific Ocean has most of
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