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Aleutian Basin
The Aleutian Basin is an oceanic basin under the southwestern Bering Sea. While the northeastern half of the Bering Sea overlies the North American Plate in relatively shallow water, the Aleutian Basin consists of oceanic plate—the remnant of the Kula Plate that was mostly subducted under the North American Plate. Subduction of the Kula Plate ceased after the creation of the Aleutian Trench to its south. What remained of the Kula Plate attached to the North American Plate. This former subduction zone is now the Beringian Margin, which now hosts sixteen submarine canyons, including Zhemchug Canyon, the world's largest. The deep-water part of the Bering Sea is separated into the Commander Basin and Bowers basins by the submarine Shirshov Ridge and Bowers Ridge. The Commander Basin occupies the western part of the Bering Sea, with the Shirshov Ridge on its eastern border. The Shirshov Ridge extends 750 km southward from the Russian Olyutorskii Peninsula to connect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LA2-Bering-Sea-UTM-zones
LA most frequently refers to Los Angeles, the second largest city in the United States. La, LA, or L.A. may also refer to: Arts and entertainment Music * La (musical note), or A, the sixth note * "L.A.", a song by Elliott Smith on ''Figure 8'' (album) * ''L.A.'' (EP), by Teddy Thompson * ''L.A. (Light Album)'', a Beach Boys album * "L.A." (Neil Young song), 1973 * The La's, an English rock band * L.A. Reid, a prominent music producer * Yung L.A., a rapper * Lady A, an American country music trio * "L.A." (Amy Macdonald song), 2007 * "La", a song by Australian-Israeli singer-songwriter Old Man River Other media * l(a, a poem by E. E. Cummings * La (Tarzan), fictional queen of the lost city of Opar (Tarzan) * ''Lá'', later known as Lá Nua, an Irish language newspaper * La7, an Italian television channel * LucasArts, an American video game developer and publisher * Liber Annuus, academic journal Business, organizations, and government agencies * L.A. Screenings, a tel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shirshov Ridge
The Shirshov Ridge is located on the eastern border of the Commander Basin below the Kamchatka Peninsula. It extends directly southward for a distance of 750 km toward the Aleutian arc in the eastern part of the Bering Sea (see figure).E. V. Verzhbitsky, M. V. Kononov and V. D. Kotelkin; Plate Tectonics of the Northern Part of the Pacific Ocean; Oceanology, 2007, Vol. 47, No. 5, pp. 705–717; The Shirshov Ridge rises 2–2.5 km above the surrounding basins. Although not immediately evident from the morphology, the Shirshov Ridge southern end extends to meet the northwesternmost portion of Bowers Ridge. The continuity is evident in structural maps of basement rocks, in magnetic surveys, and in free air gravity field surveys. The connection has been distorted by a sinistral shear fault, which has displaced the point of connection by ~350 km. See also *Olyutor Range The Olyutor Range (russian: Олюторский хребет) is a range of mountains in Kam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aleutian Basin Detail
Aleutian may refer to: * Aleut people, the indigenous people of the Aleutian Islands, the Pribilof Islands, the Shumagin Islands, and the far western part of the Alaska Peninsula in Alaska and of Kamchatka Krai, Russia * Aleutian disease, a disease in minks and ferrets * Aleutian Islands, a chain of islands in Alaska * Aleut language, the language of the Aleut people * Alaska Peninsula, also called the ''Aleutian Peninsula'', leading from the Alaska state mainland to the Aleutian Islands * Aleutian Range, a mountain range in Alaska * Aleutian Trench (or Aleutian Trough), a deep in the North Pacific Ocean at the western end of the Aleutian Islands * ''SS Aleutian'', an American passenger ship See also * * * Aleut (other) Aleut or ''variation'' may refer to; * Aleuts, a peoples found in the Bering Sea/Straits area * Aleut language, the language spoken by these peoples * Alutiiq, a people found on the Aleut-Alaska Peninsula and Kodiah Island Archipelago, sometimes c ...< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowers Basin
Bowers may refer to: Persons *Bowers (surname) Places ;Antarctica * Bowers Mountains * Bowers Piedmont Glacier ;United Kingdom * Bowers, Staffordshire, England * Bowers Gifford, Essex, England ;United States * Bowers, Delaware * Bowers, Indiana * Bowers, Pennsylvania * Bowers, Wisconsin * Bowers House (other), several structures * Bowers Museum, Santa Ana, California * Bowers Stadium, Sam Houston University, Texas Other uses * Bowers & Wilkins, a loudspeaker company in the United Kingdom * USS ''Bowers'' (DE-637) * ''Bowers v. Hardwick'', a 1986 U.S. Supreme Court decision * ''Bowers v. Kerbaugh-Empire Co.'', a 1926 U.S. Supreme Court decision * Bowers Coaches, a bus company based in the High Peak area of Derbyshire in England * Bowers' operators, a way to write large numbers * Betty Bowers, a fictional character See also * Bauer (other) * Bower (other) Bower may refer to: Arts and entertainment * ''Catherine, or The Bower'', an unfinished Jan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Island Arc
Island arcs are long chains of active volcanoes with intense seismic activity found along convergent tectonic plate boundaries. Most island arcs originate on oceanic crust and have resulted from the descent of the lithosphere into the mantle along the subduction, subduction zone. They are the principal way by which continental growth is achieved. Island arcs can either be active or inactive based on their seismicity and presence of volcanoes. Active arcs are ridges of recent volcanoes with an associated deep seismic zone. They also possess a distinct curved form, a chain of active or recently extinct volcanoes, a Oceanic trench, deep-sea trench, and a large negative Bouguer anomaly on the convex side of the volcanic arc. The small positive gravity anomaly associated with volcanic arcs has been interpreted by many authors as due to the presence of dense volcanic rocks beneath the arc. Inactive arcs are a chain of islands which contains older volcanic and volcaniclastic rocks. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aleutian Islands
The Aleutian Islands (; ; ale, Unangam Tanangin,”Land of the Aleuts", possibly from Chukchi language, Chukchi ''aliat'', "island"), also called the Aleut Islands or Aleutic Islands and known before 1867 as the Catherine Archipelago, are a chain of 14 large volcanic islands and 55 smaller islands. Most of the Aleutian Islands belong to the U.S. state of Alaska, but some belong to the Russian Federal subjects of Russia, federal subject of Kamchatka Krai. They form part of the Aleutian Arc in the Northern Pacific Ocean, occupying a land area of 6,821 sq mi (17,666 km2) and extending about westward from the Alaska Peninsula toward the Kamchatka Peninsula in Russia, and act as a border between the Bering Sea to the north and the Pacific Ocean to the south. Crossing 180th meridian, longitude 180°, at which point east and west longitude end, the archipelago contains both the westernmost part of the United States by longitude (Amatignak Island) and the easternmost by longitude ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olyutorskii Peninsula
Olyutorsky District (russian: Олю́торский райо́н) is an administrativeLaw #46 and municipalLaw #339-oz district (raion) of Koryak Okrug of Kamchatka Krai, Russia, one of the eleven in the krai. It is located in the northeast of the krai. The area of the district is . Its administrative center is the rural locality (a '' selo'') of Tilichiki. Population: The population of Tilichiki accounts for 34.6% of the district's total population. Geography The major rivers in the district are the Pakhacha and Apuka, having their headwaters close to the north-flowing Mayn River, as well as the Ukelayat and the Velikaya River flowing into the Bering Sea. Lantzeff speaks also of the Olyutora River,George V. Lantzeff and Richard A. Price. 'Eastward to Empire'. 1973 which does not appear on modern maps and which he distinguishes from the Pakhacha. The Olyutor Range, Pikas Range and Ukelayat Range mountain chains, as well as the southern part of the Komeutyuyam Range are in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commander Basin
The Commander Basin (alternately Komandorsky Basin) is located between the Shirshov Ridge and the Kamchatka Peninsula. Its southern boundary is the Aleutian arc (see figure) and occupies the western part of the Bering Sea. The Kamchatka Strait provides a deep water access to the basin from the southwest. The basins sedimentary cover is less than 2 km thick. In the southwestern portion of the basin near the Ulakahn Fault, linear magnetic anomalies associated with the Early Miocene have been identified. The magnetic anomalies support a sequential opening of the Commander Basin resulting from stresses on the interface between the Eurasian and Pacific plates. The structures of the Bering Sea floor at the Commander Basin were created 17 to 21 Million years before the present. The Commander Basin floor is a horizontal plain 3800–3900 m deep. It is covered with 2000–6000 m of sediment overlying an oceanic crust which is 12–14 km thick. Active spreading in the Commande ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowers Ridge
The Bowers Ridge is located in the southern part of the Aleutian Basin. It extends over in an arc, starting in the southeast at the Aleutian Arc The Aleutian Arc is a large volcanic arc in the U.S. state of Alaska. It consists of a number of active and dormant volcanoes that have formed as a result of subduction along the Aleutian Trench. Although taking its name from the Aleutian Islan ... and terminating to the northwest at the Shirshov Ridge. The Bowers Ridge arc separates the Aleutian Basin from the Bowers Basin, which it encloses. The ridge is not currently seismically active. The northern slope of the ridge is steeper than the southern slope. On the Aleutian side, the ridge is rimmed by a trough filled with a sedimentary sequence 9–10 km thick.E. V. Verzhbitsky, M. V. Kononov, and V. D. Kotelkin; Plate Tectonics of the Northern Part of the Pacific Ocean; Oceanology; 2007; Vol. 47; No. 5; pp. 705–717; The average age of the Bowers Ridge is about 30 My (Late O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commander
Commander (commonly abbreviated as Cmdr.) is a common naval officer rank. Commander is also used as a rank or title in other formal organizations, including several police forces. In several countries this naval rank is termed frigate captain. Commander is also a generic term for an officer commanding any armed forces unit, for example "platoon commander", "brigade commander" and "squadron commander". In the police, terms such as "borough commander" and "incident commander" are used. Commander as a naval and air force rank Commander is a rank used in navies but is very rarely used as a rank in armies. The title, originally "master and commander", originated in the 18th century to describe naval officers who commanded ships of war too large to be commanded by a lieutenant but too small to warrant the assignment of a post-captain and (before about 1770) a sailing master; the commanding officer served as his own master. In practice, these were usually unrated sloops-of-war of no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oceanic Basin
In hydrology, an oceanic basin (or ocean basin) is anywhere on Earth that is covered by seawater. Geologically, ocean basins are large geologic basins that are below sea level. Most commonly the ocean is divided into basins following the continents distribution: the North and South Atlantic (together approximately 75 million km2/ 29 million mi2), North and South Pacific (together approximately 155 million km2/ 59 million mi2), Indian Ocean (68 million km2/ 26 million mi2) and Arctic Ocean (14 million km2/ 5.4 million mi2). Also recognized is the Southern Ocean (20 million km2/ 7 million mi2). All ocean basins collectively cover 71% of the Earth's surface, and together they contain almost 97% of all water on the planet. They have an average depth of almost 4 km (about 2.5 miles). Definitions of boundaries Boundaries based on continents ''"Limits of Oceans and Seas"'',International Hydrographic Organization (IHO), (1953): Limits of Oceans and Seas, Internat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zhemchug Canyon
Zhemchug Canyon is an underwater canyon located in the middle of the Bering Sea. It is the deepest submarine canyon in the world, and is also tied for the widest.Normark, W.R. and Carlson, P.R., 2003Giant submarine canyons: Is size any clue to their importance in the rock record? in Chan, M.A., and Archer, A.W., eds., Extreme depositional environments: Mega end members in geologic time: Boulder, Colorado, Geological Society of America Special Paper 370, p. 1–15 Geography It has a vertical relief of dropping from the shallow shelf of the Bering Sea to the depths of the Aleutian Basin. Zhemchug Canyon is deeper than the Grand Canyon which is deep. It has two main branches, each larger than typical continental margin canyons such as the Monterey Canyon. What makes the Zhemchug Canyon the world's largest is not only its great depth, but its immense cross-sectional and drainage area, (11,350 km2) and volume (5800 km3). In 2016, Michelle Ridgeway explored the cany ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
