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Spaulding Peninsula
The Getz Ice Shelf () is an ice shelf over long and from wide, bordering the Hobbs Coast and Bakutis Coast of Marie Byrd Land, Antarctica, between the McDonald Heights and Martin Peninsula. Several large islands are partially or wholly embedded in the ice shelf. Location File:C74126s1 Ant.Dean Island Getz Ice Shelf.jpg, Western ice shelf Shepard to Carney islands File:C74112s5 Ant.Map Martin Peninsula context.jpg, Eastern ice shelf Carney Island to Martin Peninsula The Getz Ice Shelf extends along the north shore of Marie Byrd Land, from Hanessian Foreland and McDonald Heights in the west to Cape Herlacher on the Martin Peninsula to the east. The western section lies along the Hobbs Coast, while the section east of Dean Island lies along the full length of the Bakutis Coast. In the west the ice sheet is fed by glaciers that include, from west to east, Johnson Glacier, Venzke Glacier, Berry Glacier and DeVicq Glacier. Discovery and name The ice shelf westward of Siple Island ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Shelf
An ice shelf is a large platform of glacial ice floating on the ocean, fed by one or multiple tributary glaciers. Ice shelves form along coastlines where the ice thickness is insufficient to displace the more dense surrounding ocean water. The boundary between the ice shelf (floating) and grounded ice (resting on bedrock or sediment) is referred to as the grounding line; the boundary between the ice shelf and the open ocean (often covered by sea ice) is the ice front or calving front. Ice shelves are found in Antarctica and the Arctic (Greenland, Northern Canada, and the Russian Arctic), and can range in thickness from about . The world's largest ice shelves are the Ross Ice Shelf and the Filchner-Ronne Ice Shelf in Antarctica. The movement of ice shelves is principally driven by gravity-induced pressure from the grounded ice. That flow continually moves ice from the grounding line to the seaward front of the shelf. Typically, a shelf front will extend forward for years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermocline
A thermocline (also known as the thermal layer or the metalimnion in lakes) is a distinct layer based on temperature within a large body of fluid (e.g. water, as in an ocean or lake; or air, e.g. an atmosphere) with a high gradient of distinct temperature differences associated with depth. In the ocean, the thermocline divides the upper mixed layer from the calm deep water below. Depending largely on season, latitude, and turbulent mixing by wind, thermoclines may be a semi-permanent feature of the body of water in which they occur, or they may form temporarily in response to phenomena such as the radiative heating/cooling of surface water during the day/night. Factors that affect the depth and thickness of a thermocline include seasonal weather variations, latitude, and local environmental conditions, such as tides and currents. Oceans Most of the heat energy of the sunlight that strikes the Earth is absorbed in the first few centimeters at the ocean's surface, which hea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wright Island
Wright Island () is an ice-covered island long, lying at the north edge of Getz Ice Shelf about midway between Carney Island and Martin Peninsula, on the Bakutis Coast, Marie Byrd Land, Antarctica. Location Wright Island is on the seaward side of the eastern end of the Getz Ice Shelf. Carney Island is to the west and Martin Peninsula is to the east. Nunn Island, Brennan Inlet and Spaulding Peninsula are to the south. Features include Beyl Head, Cape Felt and Armbruster Rocks. Discovery and naming Wright Island was delineated from air photos taken by United States Navy Operation Highjump in January 1947. It was amed by the United States Advisory Committee on Antarctic Names (US-ACAN) after Admiral Jerauld Wright, U.S. Navy, Commander in Chief, Atlantic Fleet, in over-all command of the United States Navy's Operation Deep Freeze during the International Geophysical Year, 1957–58. Features Beyl Head . An ice-covered headland midway on the east side of Wright Island. Na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carney Island
Carney Island () is an ice-covered island, long with all but its north coast lying within the Getz Ice Shelf, Antarctica. It is located between Siple Island and Wright Island along the coast of Marie Byrd Land. Name Carney Island was first delineated (except for its south part) from aerial photographs taken by United States Navy Operation Highjump (OpHjp) in January 1947. It was named by the United States Advisory Committee on Antarctic Names (US-ACAN) after Admiral Robert Carney (1895–1990), Chief of Naval Operations during the organization of Operation Deep Freeze support for the International Geophysical Year (IGY) of 1957–1958. File:C74126s1 Ant.Dean Island Getz Ice Shelf.jpg, Western Getz Ice Shelf, Shepard Island to Carney island File:C74112s5 Ant.Map Martin Peninsula context.jpg, Eastern Getz Ice Shelf, Carney Island to Martin Peninsula Features Cape Gates . An ice-covered cape which marks the northwest extremity of Carney Island along the coast of Mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grant Island
Grant Island () is an ice-covered island, long and wide, lying east of the smaller Shepard Island off the coast of Marie Byrd Land, Antarctica. Like Shepard Island, Grant Island is surrounded by the Getz Ice Shelf on all but the north side. Location Grant Island is in the north, seaward edge of the Getz Ice Shelf. Reynolds Strait is on its north side, which is indented by Ledda Bay, and separates it from Forrester Island. Shepard Island is to the west. Features, from west to east, include Brookman Point, Mount Obiglio, Mount Hummel and McCarthy Point. Discovery and name Grant Island was discovered and charted by personnel aboard on February 4, 1962. It was named by the United States Advisory Committee on Antarctic Names (US-ACAN) for Commander E. G. Grant, Commanding Officer of USS ''Glacier'' at the time of discovery. Features and nearby features Brookman Point . The snow-covered northwest point of Grant Island. Discovered and first charted from the USS ''Glacier'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shepard Island
Shepard Island () is an island about long, lying west of Grant Island off the coast of Marie Byrd Land, Antarctica. The island is ice capped except at its northern, seaward side, and is almost wholly embedded in the Getz Ice Shelf. Location Shepard Island is in the north of the Getz Ice Shelf. Reynolds Strait is on its north side, separating it from Forrester Island. Grant Island is to the east. It is home to two Adélie penguin rookeries on its north shore. Features, from west to east, include Worley Point, Mount Petinos, Moran Bluff, Mathewson Point and Mount Colburn. Discovery and name Shepard Island was discovered by the United States Antarctic Service (USAS) Expedition (1939–1941) and named for John Shepard Jr., a contributor to the expedition. Features Worley Point . A rock point, the site of an Adelie penguin rookery, forming the northwest corner of Shepard Island. Like Grant Island, eastward, Shepard Island is surrounded by the Getz Ice Shelf except on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McCuddin Mountains
The McCuddin Mountains are a small cluster of mountains in Antarctica consisting mainly of two large mountains, Mount Flint and Mount Petras, along with several scattered peaks and nunataks. Located in Marie Byrd Land, east of the Ames Range, with Wallace Rock as its southeast extremity. The mountains were discovered and photographed from the air in a flight from West Base of the U.S. Antarctic Service on Dec. 14, 1940. They were mapped by U.S. Geological Survey (USGS) from surveys and U.S. Navy air photos, 1959-65. Named by Advisory Committee on Antarctic Names (US-ACAN) for Rear Admiral Leo B. McCuddin, U.S. Navy (USN), Commander of the U.S. Naval Support Force, Antarctica, 1972. Mount Flint Mount Flint () is a prominent rounded and mainly snow-covered mountain, , standing NW of Mount Petras. The feature was observed from aircraft of the U.S. Antarctic Service (USAS) in Flight G, Dec. 15, 1940, and was briefly referred to as "Mount Gray". Asher Peak is a peak in the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ames Range
The Ames Range () is a range of snow-covered, flat-topped, steep-sided mountains, extending in a north–south direction for and forming a right angle with the eastern end of the Flood Range in Marie Byrd Land, Antarctica. Location The Ames Range is northwest of the Mount Bursey massif in the Flood Range, from which it is separated by Forrest Pass, and southeast of the Berry Glacier and Demas Range. Glaciers draining the range include Coleman Glacier and Rosenberg Glacier on the west side, Jacoby Glacier on the east side and Herbst Glacier to the north. Peaks include Mount Andrus, Mount Boenninghausen, Mount Kosciusco and Mount Kauffman. Other features include Lind Ridge, Gardiner Ridge and Brown Valley. Discovery and naming The Ames Range was discovered by the United States Antarctic Service (USAS; 1939–41) and named by Richard E. Byrd for his father-in-law, Joseph Ames. Geology The Ames Range consists of three coalescing shield volcanoes: Mount Andrus, Mount Kosciusko an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perry Range
Perry Range () is a narrow range of mountains, long, separating the lower ends of Venzke Glacier and Berry Glacier where they enter Getz Ice Shelf, on the coast of Marie Byrd Land, Antarctica. Location The Perry Range trends from north to south. It is south of the Getz Ice Shelf on the coast of Marie Byrd Land, and lies between the Venzke Glacier to the west and the Berry Glacier to the east. Features, from north to south, include Mount Prince, Mount Soond, Bleclic Peaks and Schloredt Nunatak. Features further south, also on the west side of Berry Glacier, include Bennett Bluff, Peacock Peak and Poindexter Peak. Discovery and name The Perry Range was discovered and photographed from aircraft of the United States Antarctic Service (USAS) in December 1940. It was named by United States Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant John E. Perry, CEC, United States Navy, Public Works Officer at McMurdo Station in 1968. He commanded the Antarctic Construction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowyer Butte
Bowyer Butte () is a steep-cliffed eminence with a nearly flat summit, wide and high, located between the lower ends of the Johnson Glacier and the Venzke Glacier on the coast of Marie Byrd Land, Antarctica. Location Bowyer Butte is south of the Getz Ice Shelf. To its west, the Johnson Glacier separates it from Hagey Ridge. To its east, the Venzke Glacier separates it from the Perry Range. Features and nearby features include, from north to south, Hoyt Head, Mount Kohnen, Mount Gester and Serlin Spur. Discovery and name Bowyer Butte was discovered and photographed from the air by the United States Antarctic Service (USAS), 1939–41. It was named by the United States Advisory Committee on Antarctic Names (US-ACAN) for Donald W. Bowyer, a United States Antarctic Research Program meteorologist at Byrd Station in 1962. Features Hoyt Head . High rock headland forming the northeast end of Bowyer Butte, located at the west side of Venzke Glacier. The headland was first see ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gigatonnes
The tonne ( or ; symbol: t) is a unit of mass equal to 1,000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton in the United States to distinguish it from the non-metric units of the short ton (United States customary units) and the long ton ( British imperial units). It is equivalent to approximately 2,204.6 pounds, 1.102 short tons, and 0.984 long tons. The official SI unit is the megagram (Mg), a less common way to express the same amount. Symbol and abbreviations The BIPM symbol for the tonne is t, adopted at the same time as the unit in 1879.Table 6 . BIPM. Retrieved on 2011-07-10. Its use is also official for the metric ton in the United States, having been adopted by the United States |
