|
Malin Valley
Victoria Valley () is an extensive ice-free valley, formerly occupied by a large glacier, extending from Victoria Upper Glacier to Victoria Lower Glacier in Victoria Land, Antarctica. It is one of the larger McMurdo Dry Valleys. Name Victoria Valley was named by the Victoria University of Wellington Antarctic Expedition (VUWAE: 1958-59) after their Alma Mater Victoria University of Wellington which sponsored the expedition. Location The Victoria Valley is one of the McMurdo Dry Valleys. The head of the Victoria Valley, which contains the Victoria Upper Glacier, is south of the Clare Range. The valley descends south-southeast between Saint Johns Range to the east and the Cruzen Range to the west. It is joined from the west by the Barwick Valley, and then south of Mount Insel by the McKelvey Valley, below which Lake Vida lies across the valley. The valley continues in an east-northeast direction. The Packard Glacier descends part way into it from the north and the Clark Glacie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctica
Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of . Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of . Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation. It is mainly a polar desert, with annual Climate of Antarctica#Precipitation, precipitation of over along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost . Antarctica holds the record for the Lowest temperature recorded on Earth, lowest measured temperature on Earth, . The coastal regions can reach temperatures over in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ross Sea
The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment, and is the southernmost sea on Earth. It derives its name from the British explorer James Clark Ross who visited this area in 1841. To the west of the sea lies Ross Island and Victoria Land, to the east Roosevelt Island and Edward VII Peninsula in Marie Byrd Land, while the southernmost part is covered by the Ross Ice Shelf, and is about from the South Pole. Its boundaries and area have been defined by the New Zealand National Institute of Water and Atmospheric Research as having an area of . The circulation of the Ross Sea is dominated by a wind-driven ocean gyre and the flow is strongly influenced by three submarine ridges that run from southwest to northeast. The circumpolar deep water current is a relatively warm, salty and nutrient-rich water mass that flows onto the continental shelf at certain locations. The Ross Sea is covered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purgatory Peak
Saint Johns Range () is a crescent-shaped mountain range about long, in Victoria Land, Antarctica. It is bounded on the north by the Cotton Glacier, Miller Glacier and Debenham Glacier, and on the south by Victoria Valley and the Victoria Upper Glacier and Victoria Lower Glacier. Name Saint Johns Range was named by the New Zealand Northern Survey Party of the Commonwealth Trans-Antarctic Expedition (CTAE), 1956–58, which surveyed peaks in the range in 1957. Named for St John's College, Cambridge, England, with which several members of the British Antarctic Expedition, 1910–13 were associated during the writing of their scientific reports, and in association with the adjacent Gonville and Caius Range. Location Saint Johns Range is bounded to the west by the Victoria Upper Glacier and the Victoria Valley, which runs in a south-southeast direction to Lake Vida. Below Lake Vida the Victoria Valley turns to an east-northeast direction. It is filled by the Victoria Lower Glacier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Vida 2012 01
A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from the ocean, although they may be connected with the ocean by rivers. Lakes, as with other bodies of water, are part of the water cycle, the processes by which water moves around the Earth. Most lakes are fresh water and account for almost all the world's surface freshwater, but some are salt lakes with salinities even higher than that of seawater. Lakes vary significantly in surface area and volume of water. Lakes are typically larger and deeper than ponds, which are also water-filled basins on land, although there are no official definitions or scientific criteria distinguishing the two. Lakes are also distinct from lagoons, which are generally shallow tidal pools dammed by sandbars or other material at coastal regions of oceans or large la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morse Spur
Saint Johns Range () is a crescent-shaped mountain range about long, in Victoria Land, Antarctica. It is bounded on the north by the Cotton Glacier, Miller Glacier and Debenham Glacier, and on the south by Victoria Valley and the Victoria Upper Glacier and Victoria Lower Glacier. Name Saint Johns Range was named by the New Zealand Northern Survey Party of the Commonwealth Trans-Antarctic Expedition (CTAE), 1956–58, which surveyed peaks in the range in 1957. Named for St John's College, Cambridge, England, with which several members of the British Antarctic Expedition, 1910–13 were associated during the writing of their scientific reports, and in association with the adjacent Gonville and Caius Range. Location Saint Johns Range is bounded to the west by the Victoria Upper Glacier and the Victoria Valley, which runs in a south-southeast direction to Lake Vida. Below Lake Vida the Victoria Valley turns to an east-northeast direction. It is filled by the Victoria Lower Glacier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advisory Committee On Antarctic Names
The Advisory Committee on Antarctic Names (ACAN or US-ACAN) is an advisory committee of the United States Board on Geographic Names responsible for recommending commemorative names for features in Antarctica. History The committee was established in 1943 as the Special Committee on Antarctic Names (SCAN). It became the Advisory Committee on Antarctic Names in 1947. Fred G. Alberts was Secretary of the Committee from 1949 to 1980. By 1959, a structured nomenclature was reached, allowing for further exploration, structured mapping of the region and a unique naming system. A 1990 ACAN gazeeter of Antarctica listed 16,000 names. Description The United States does not recognise territorial boundaries within Antarctica, so ACAN assigns names to features anywhere within the continent, in consultation with other national nomenclature bodies where appropriate, as defined by the Antarctic Treaty System. The research and staff support for the ACAN is provided by the United States Geologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Névé
Névé is a young, granular type of snow which has been partially melted, refrozen and compacted, yet precedes the form of ice. This type of snow can contribute to glacier formation through the process of ''nivation''. Névé that survives a full season of ablation turns into firn, which is both older and slightly denser. Firn eventually becomes glacial ice – the long-lived, compacted ice that glaciers are composed of. Glacier formation can take years to hundreds of years, depending on freeze-thaw factors and snow-compaction rates. Névé is annually observed in skiing slopes, and is generally disliked as an icy falling zone. Névé has a minimum density of 500 kg/m3, which is Density#Water, roughly half of the density of liquid water at 1 Atmosphere (unit), atm. Névé can also refer to the Alpine climate, alpine region in which snowfall accumulates, becomes névé, and feeds a glacier. See also * Suncup (snow), Suncup Notes External links * Névés, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilson Piedmont Glacier
Wilson Piedmont Glacier () is a large piedmont glacier extending from Granite Harbour to Marble Point on the coast of Victoria Land. Discovery and name The Wilson Piedmont Glacier was discovered by the ''Discovery'' expedition, 1901–1904. The British Antarctic Expedition, 1910–1913, named the feature for Dr. Edward A. Wilson, surgeon and artist with Scott's first expedition and chief of the scientific staff with the second. Wilson lost his life on the way back from the South Pole with Scott. Glaciology The Wilson Piedmont Glacier extends along the coastal plain of the west coast of the Ross Sea from Granite Harbor south to McMurdo Sound. Most of its input is from direct precipitation, but it receives some inflows from alpine glaciers. It has a broad dome with a divide near the McMurdo Dry Valleys. Most ice flows east to the Ross Sea, where the glacier terminates and comes afloat in the sea along its eastern margin. Some ice flows west and contributes to the Wright Low ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
