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McMurdo Ice Shelf
The McMurdo Ice Shelf is the portion of the Ross Ice Shelf bounded by McMurdo Sound and Ross Island on the north and Minna Bluff on the south. Studies show this feature has characteristics quite distinct from the Ross Ice Shelf and merits individual naming. A.J. Heine, who made investigations in 1962–63, suggested the name for the ice shelf bounded by Ross Island, Brown Peninsula, Black Island (Ross Archipelago), Black Island and White Island (Ross Archipelago), White Island. The Advisory Committee on Antarctic Names has extended the application of this name to include the contiguous ice shelf southward to Minna Bluff. In March 2010, while scientists were taking photographs of the underside of the ice shelf, they discovered a living Lysianassidae amphipod. References Ice shelves of Antarctica Landforms of Victoria Land Landforms of Ross Island Scott Coast {{RossIsland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mcmurdo Oli 2013334
Vice-admiral (Royal Navy), Vice-Admiral Archibald William McMurdo (24 September 1812 – 11 December 1875) was a Scottish people, Scottish naval officer and polar explorer after whom Antarctica's McMurdo Sound, McMurdo Station, McMurdo Ice Shelf, McMurdo Dry Valleys and McMurdo–South Pole highway, McMurdo–South Pole Highway are named. Early life Archibald William McMurdo was born on 24 September 1812 in Scotland. He was the son of Lieutenant colonel (United Kingdom), Lieutenant Colonel Archibald McMurdo and grandson of John McMurdo, a Chamberlain (office), chamberlain at Drumlanrig Castle. Career McMurdo joined the Royal Navy on 6 October 1824, at the age of 12. He was promoted to lieutenant in 1836 for his skill and courage in saving the crew of a shipwrecked whaler from hostile Māori people, New Zealand natives. He achieved the rank of commander in 1843 and captain in 1851. His career included two discovery expeditions aboard HMS Terror (1813), HMS ''Terror'', the firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ross Ice Shelf
The Ross Ice Shelf is the largest ice shelf of Antarctica (, an area of roughly and about across: about the size of France). It is several hundred metres thick. The nearly vertical ice front to the open sea is more than long, and between high above the water surface. Ninety percent of the floating ice, however, is below the water surface. Most of the Ross Ice Shelf is in the Ross Dependency claimed by New Zealand. It floats in, and covers, a large southern portion of the Ross Sea and the entire Roosevelt Island, Antarctica, Roosevelt Island located in the east of the Ross Sea. The ice shelf is named after James Clark Ross, Sir James Clark Ross, who discovered it on 28 January 1841. It was originally called "The Barrier", with various adjectives including "Great Ice Barrier", as it prevented sailing further south. Ross mapped the ice front eastward to 160° W. In 1947, the U.S. Board on Geographic Names applied the name "Ross Shelf Ice" to this feature and published it in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McMurdo Sound
The McMurdo Sound is a sound in Antarctica, known as the southernmost passable body of water in the world, located approximately from the South Pole. Captain James Clark Ross discovered the sound in February 1841 and named it after Lieutenant Archibald McMurdo of HMS ''Terror''. The sound serves as a resupply route for cargo ships and airplanes that land on floating ice airstrips near McMurdo Station. The McMurdo seasonal Ice Runway was operated from October to December from the 1950s to the 2010s, then in December the ice breaks up and McMurdo port is opened by an Icebreaker ship and ships can resupply the Antarctic bases. Physical characteristics Boundary and extents The sound extends approximately 55 kilometers (34 mi) in length and width, and opens into the larger Ross Sea to the north. To the south, the sound is bounded by the Ross Ice Shelf cavity, to the west lies the Royal Society Range, and to the east is Ross Island. McMurdo Sound is separated from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ross Island
Ross Island is an island in Antarctica lying on the east side of McMurdo Sound and extending from Cape Bird in the north to Cape Armitage in the south, and a similar distance from Cape Royds in the west to Cape Crozier in the east. The island is entirely volcanic. Mount Erebus, , near the center, is an active volcano. Mount Terror, about eastward, is an extinct volcano. Mount Bird rises to just south of Cape Bird. Ross Island lies within the boundary of Ross Dependency, an area of Antarctica claimed by New Zealand. However, the claim is currently in abeyance by the International Antarctic Treaty System of 1961. Signatories of this treaty essentially agree that Antarctica is used for peaceful and scientific purposes. The United States and New Zealand each established bases, McMurdo and Scott, in the mid 1950s on Ross Island; the former is now the largest human settlement in Antarctica since its founding. The island is also home to early exploration shacks and memori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minna Bluff
Minna Bluff () is a narrow, bold peninsula, long and wide, projecting southeast from Mount Discovery into the Ross Ice Shelf, Antarctica. It was discovered by the British National Antarctic Expedition (1901-04) which named it for Minna, the wife of Sir Clements Markham, the "father" of the expedition. It culminates in a south-pointing hook feature (Minna Hook), and is the subject of research into Antarctic cryosphere history, funded by the National Science Foundation, Office of Polar Programs. Exploration and naming The bluff is mentioned repeatedly in the history of Antarctic exploration. It was first sighted in June 1902, during Captain Robert Falcon Scott's ''Discovery'' Expedition, 1901–04. It was thereafter recognised as a key landmark and location for vital supply depots for southern journeys towards the South Pole. Originally identified simply as "the Bluff", it was later named by Scott after the wife of Royal Geographical Society former president Sir Clements Mark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown Peninsula
The Brown Peninsula () is a nearly ice-free peninsula, long and wide, which rises above the Ross Ice Shelf northward of Mount Discovery, to which it is connected by a low isthmus. It was discovered by the British National Antarctic Expedition, 1901–04 (BrNAE), which named it "Brown Island" because of its color and its island-like character. It was named it "Brown Peninsula" by New Zealand Antarctic Place-Names Committee in 1961 after it was described a peninsula. Location Brown Peninsula lies to the north of Mount Discovery, to which it is connected by a narrow isthmus. The Koettlitz Glacier flows along its west coast. The east coast faces the Ross Ice Shelf. Black Island lies to the east of the peninsula. Features Features, from south to north, include: Moraine Strait . A strait on the McMurdo Ice Shelf that trends north–south between Brown Peninsula, Mount Discovery, and Minna Bluff on the west, and Black Island on the east. The surface of the strait, especially ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Island (Ross Archipelago)
Black Island () is an island in the Ross Archipelago. It is long and projects through the Ross Ice Shelf to a height of . It was discovered by the British National Antarctic Expedition (''Discovery'' Expedition, 1901–04), which named it for its appearance. The island is largely ice-free and primarily composed of black volcanic rock. The island's northernmost point is named Cape Hodgson, named after Thomas Vere Hodgson, one of the oldest members of the ''Discovery'' Expedition. Location Black Island is in the Ross Ice Shelf, to the northeast of Mount Discovery, and southeast of the Brown Peninsula. White Strait runs past the east end of the island, separating it from White Island (Ross Archipelago), White Island to the east. Minna Bluff is to the south. Geology Black Island is volcanic in origin, consisting of a series of trachytic lava domes and basaltic pyroclastic cones. Potassium–argon dating of the island's volcanic rocks has given ages ranging from 1.69 to 3.8& ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Island (Ross Archipelago)
White Island () is an island in the Ross Archipelago of Antarctica. It is long, protruding through the Ross Ice Shelf immediately east of Black Island. It was discovered by the British National Antarctic Expedition (1901–04) and so named by them because of the mantle of snow that covers it. Protected Area Some 142 km2 of shelf ice adjoining the north-west coast of the island has been designated an Antarctic Specially Protected Area ( ASPA 137) because it supports an isolated, small breeding population of Weddell seals. Geology White Island consists of two Pleistocene shield volcanoes overlain by volcanic cones. The last known eruption occurred 0.17 million years ago. Features Features include, from south to north, Mount Nesos, Mount Henderson, Isolation Point, Mount Nipha, Mount Hayward, Mount Heine, and Cape Spencer-Smith. Mount Nesos . The remnants of a volcanic core, over high, projecting through the ice near the southwest end of White Island. Named by the Ne ... [...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] |
Lysianassidae
Lysianassidae is a family (biology), family of marine Amphipoda, amphipods, containing the following genera: *''Acontiostoma'' Stebbing, 1888 *''Alibrotus'' Milne-Edwards, 1840 *''Allogaussia'' Schellenberg, 1926 *''Ambasia'' Boeck, 1871 *''Ambasiella'' Schellenberg, 1935 *''Amphorites'' Lowry & Stoddart, 2012 *''Aristiopsis'' J. L. Barnard, 1961 *''Aruga (crustacean), Aruga'' Homes, 1908 *''Arugella'' Pirlot, 1936 *''Azotostoma'' J. L. Barnard, 1965 *''Boeckosimus'' J. L. Barnard, 1969 *''Bonassa'' Barnard & Karaman, 1991 *''Bruunosa'' Barnard & Karaman, 1987 *''Callisoma'' Costa, 1851 *''Cedrosella'' Barnard & Karaman, 1987 *''Cheirimedon'' Stebbing, 1888 *''Concarnes'' Barnard & Karaman, 1991 *''Conicostoma'' Lowry & Stoddart, 1983 *''Coximedon'' Barnard & Karaman, 1991 *''Dartenassa'' Barnard & Karaman, 1991 *''Dissiminassa'' Barnard & Karaman, 1991 *''Elimedon'' J. L. Barnard, 1962 *''Falklandia (crustacean), Falklandia'' De Broyer, 1985 *''Gronella'' Barnard & Karaman, 1991 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphipod
Amphipoda () is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods () range in size from and are mostly detritivores or scavengers. There are more than 10,700 amphipod species currently recognized. They are mostly marine animals, but are found in almost all aquatic environments. Some 2,250 species live in fresh water, and the order also includes the terrestrial sandhoppers such as '' Talitrus saltator'' and '' Arcitalitrus sylvaticus''. Etymology and names The name ''Amphipoda'' comes, via Neo-Latin ', from the Greek roots 'on both/all sides' and 'foot'. This contrasts with the related Isopoda, which have a single kind of thoracic leg. Particularly among anglers, amphipods are known as ''freshwater shrimp'', ''scuds'', or ''sideswimmers''. Description Anatomy The body of an amphipod is divided into 13 segments, which can be grouped into a head, a thorax and an abdomen. The head is fused to the thorax, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Shelves Of Antarctica
This is a list of Antarctic ice shelves. Ice shelf, Ice shelves are attached to a large portion of the Antarctic coastline. Their total area is 1,541,700 km2. Names are also listed in the Scientific Committee on Antarctic Research, Gazetteer. The ice shelf areas are listed below, clockwise, starting in the west of East Antarctica: :† Indicates that the ice shelf has collapsed. See also *List of Antarctic ice streams *List of glaciers in the Antarctic *Retreat of glaciers since 1850 References {{Authority control Ice shelves of Antarctica, Antarctica-related lists, Ice shelves Lists of bodies of water, Antarctic ice shelves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
