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Bering Sea and Strait, Russian Beringovo an ext and Proliv Beringa, northernmost component of the Pacific Ocean, separating the continent of Asia and North America. To the north the Bering Sea connects with the Arctic s through the Bering Strait, at the narrowest suggest of i beg your pardon the 2 continents are around 53 miles (85 kilometres) apart. The boundary in between the joined States and Russia passes with the sea and also the strait.
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The Bering Strait is a reasonably shallow i averaging 100 come 165 feet (30 come 50 metres) in depth. During the Ice age the sea level fell by number of hundred feet, make the strait into a soil bridge in between the continent of Asia and also North America, end which a considerable migration of plants and also animals occurred.
In enhancement to the Aleutian and also Komandor groups, over there are several other huge islands in both the sea and also strait. These incorporate Nunivak, St. Lawrence, and Nelson islands in Alaskan waters and also Karagin Island in Russian waters.
The Bering Sea may be divided into two nearly equal parts: a relatively shallow area along the continental and insular shelves in the north and east and also a lot deeper area in the southwest. In the shelf area, i m sorry is an enormous underwater plain, the depth are, in most cases, less than 500 feet. The deep component in the southwestern portion of the sea is also a plain, lying at depths of 12,000 come 13,000 feet and also divided by separate ridges into three basins: the bigger Aleutian basin to the north and also east, the Bowers container to the south, and also the Komandor basin to the west. The sea’s deepest point, 13,442 feet (4,097 metres), is in the Bowers Basin.
The continent crust is much more than 12 mile thick along the shallow shelves and also in the Aleutian Islands. The thickness to reduce in the slope areas, and also in the deep part of the sea the crust is 6 to 9 miles thick.
Enormous amounts of sedimentary material enter the sea annually from the land as a an outcome of erosion the the shore. Plant and also animal life at the surface likewise produce sedimentary material, yet very small reaches the bottom, and also consequently most of the sediment top top the floor that the sea is from the land. In addition to a great deal of silica, the bottom ooze stop a huge quantity of boulders, pebbles, and gravel torn from the shores by ice and carried out to sea. In the southern part, the sediments space rich in product of volcanic origin.
Although the Bering Sea is situated in the exact same latitude as great Britain, its climate is much more severe. The southern and also western components are characterized by cool, merganser summers with regular fogs and comparatively warm, snowy winters. Winter are excessive in the northern and also eastern portions, v temperatures of -31° to -49° F (-35° come -45° C) and also high winds. The summers in the north and also east are cool, with comparatively low precipitation. Snow persists ~ above the Koryak coastline for as long as 8 months and also on the Chukchi Peninsula for nearly 10 months, through a eye cover one to two feet thick. The annual precipitation in the southern part of the sea is more than 40 inch (1,000 millimetres), mainly in the form of rainfall, if in the northern part the precipitation is much less than half as much and also is mostly snow.
Mean annual air temperatures range from -14° F (-10° C) in the northern areas to about 39° F (4° C) in the southern parts. Water temperatures on the surface typical from 34° F (1° C) in the phibìc to 41° F (5° C) in the south. The period without frosts large for about 80 work in the northern part of the sea, wherein snow is common even in the summer and also maximum temperature are only 68° F (20° C). In the southern area there are nearly 150 days there is no frost, and the temperature seldom falls much below freezing. January and February are the coldest months, July and also August the warmest. Major storms led to by solid centres of short atmospheric pressure sometimes penetrate the southern part of the sea.
Practically every one of the Bering Sea water comes from the Pacific Ocean. The salinity of the surface ar water is reasonably low, 31 come 33 parts per thousand; in the deeper components of the sea the salinity increases to 35 parts per thousand near the bottom. In winter the northern part of the sea is extended with ice, and also even in summer the water below the surface ar retains a subfreezing temperature. The framework of the Bering Sea waters in basic is subarctic, defined by the visibility in summer the a cold intermediate layer through warmer waters over and below. Throughout the summer the surface ar water is heated, but a significant layer of water that was cooled during the winter stays cold and is well-known as the cold intermediate layer. The best thickness that this intermediate layer is about 475 feet in the northern part of the sea and also as lot as 280 feet in the south. Underneath this class is one the is contempt warmer, listed below which lied the chillier bottom waters. In the northern and also eastern shallow areas of the sea, just two upper layers develop: surface water and also a cooler intermediary layer.
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Warm oceanic waters native the south go into the Bering Sea v the many straits the the Fox Islands, through the Amchitka and Tanaga passes, and to a an excellent extent v the Blizhny Strait in between Attu and Medny islands. The Attu, Tanaga, and Transverse currents bring the warm water come the northwest. The Transverse Current, proceeding along the oriental continental slope in the direction the Cape Navarin, branches in two: one branch develops the Lawrence current moving northward, and also the other joins the Anadyr Current, i m sorry in turn provides birth to a an effective Kamchatka present that governs the southward activity of the Bering Sea waters follow me the asian coasts. Close to the Alaska coastline the general direction the the water is come the north, a variable responsible for the much less severe ice conditions in that component of the sea as contrasted with the western part. Few of the Bering Sea water passes through the Bering Strait right into the Arctic Ocean, yet the bulk of it return to the Pacific. The deep Bering Sea waters rise progressively to the surface and return to the Pacific as surface ar waters. Thus, the Bering Sea is critical factor in the general circulation that the northern part of the Pacific ocean waters. The increase to the surface ar of oceanic waters wealthy in nutrient salts gives the sea a high biological productivity.