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Mercer Ice Stream
Mercer Ice Stream (), formerly Ice Stream A, flows west to Gould Coast to the south of Whillans Ice Stream, Antarctica. It is the southernmost of several major ice streams draining from Marie Byrd Land into the Ross Ice Shelf. The ice streams were investigated and mapped by U.S. Antarctic Research Program personnel in a number of field seasons from 1983–84 and named Ice Stream A, B, C, etc., according to their position from south to north. The name was changed by the Advisory Committee on Antarctic Names in 2002 to honor Quaternary geologist John H. Mercer (1922–87) of the Institute of Polar Studies (now the Byrd Polar Research Center), Ohio State University, who mapped the moraines above Reedy Glacier and in the Ohio Range at the head of Horlick Ice Stream, the major tributaries to Mercer Ice Stream. See also * Conway Ice Ridge * List of glaciers in the Antarctic There are many glaciers in the Antarctic. This set of lists does not include ice sheets, ice caps or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Gould Coast
The Gould Coast () is a portion of the coast of Antarctica along the eastern margin of the Ross Ice Shelf at Amundsen Coast between the west side of Scott Glacier (Transantarctic Mountains), Scott Glacier and the south end of the Siple Coast (). It was named by the New Zealand Antarctic Place-Names Committee in 1961 for Laurence M. Gould, a geologist who was second-in-command of the Byrd Antarctic Expedition, 1928–30. Gould led the Geological Party which in 1929 mapped of this coast. While president of Carleton College, Northfield, Minnesota, he was appointed Chairman of the U.S. National Committee for the International Geophysical Year and took a prominent part in planning the United States research program for Antarctica. References Gould Coast, Coasts of the Ross Dependency {{RossDependency-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Whillans Ice Stream
Whillans Ice Stream () is a glaciological feature of the West Antarctic Ice Sheet, formerly known as Ice Stream B, renamed in 2001 in honor of Ohio State University glaciologist Ian Whillans. Research Whillans Ice Stream is one of about a half-dozen large, fast-moving glacier, rivers of ice pouring from the West Antarctic Ice Sheet into the Ross Ice Shelf. The ice stream is the subject of different glaciological studies, one of which is looking at subglacial lakes that researchers believe may be speeding the movement of the ice as they periodically fill and drain. Other researchers funded by the National Science Foundation, reported in the June 5, 2008 issue of the journal ''Nature (journal), Nature'' that, from seismological and GPS data, they discovered the Whillans Ice Stream releases two bursts of seismic waves every day, each one equivalent to a Seismic scale#Magnitude scales, magnitude 7 earthquake. The data show that the river of ice moves about a half-meter within approxi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Ice Stream
An ice stream is a region of fast-moving ice within an ice sheet. It is a type of glacier, a body of ice that moves under its own weight. They can move upwards of a year, and can be up to in width, and hundreds of kilometers in length. They tend to be about deep at the thickest, and constitute the majority of the ice that leaves the sheet. In Antarctica, the ice streams account for approximately 90% of the sheet's mass loss per year, and approximately 50% of the mass loss in Greenland. The shear forces cause deformation and recrystallization that drive the movement, this movement then causes topographic lows and valleys to form after all of the material in the ice sheet has been discharged. Sediment also plays an important role in flow velocity; the softer and more easily deformed the sediment present, the easier it is for flow velocity to be higher. Most ice streams contain a layer of water at the bottom, which lubricates flow and acts to increase speed. Mechanics Ice str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Marie Byrd Land
Marie Byrd Land (MBL) is an unclaimed region of Antarctica. With an area of , it is the largest unclaimed territory on Earth. It was named after the wife of American naval officer Richard E. Byrd, who explored the region in the early 20th century. The territory lies in West Antarctica, east of the Ross Ice Shelf and the Ross Sea and south of the Pacific Ocean portion of the Antarctic or Southern Ocean, extending eastward approximately to a line between the head of the Ross Ice Shelf and Eights Coast. It stretches between 158°W and 103°24'W. The inclusion of the area between the Rockefeller Plateau and Eights Coast is based upon Byrd's exploration. Overview Because of its remoteness, even by Antarctic standards, most of Marie Byrd Land (the portion east of 150°W) has not been claimed by any sovereign state. It is by far the largest single unclaimed territory on Earth, with an area of , including Eights Coast, immediately east of Marie Byrd Land. In 1939, United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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] [Amazon] |
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] [Amazon] |
John H
John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second Epistle of John, often shortened to 2 John * Third Epistle of John, often shortened to 3 John People * John the Baptist (died ), regarded as a prophet and the forerunner of Jesus Christ * John the Apostle (died ), one of the twelve apostles of Jesus Christ * John the Evangelist, assigned author of the Fourth Gospel, once identified with the Apostle * John of Patmos, also known as John the Divine or John the Revelator, the author of the Book of Revelation, once identified with the Apostle * John the Presbyter, a figure either identified with or distinguished from the Apostle, the Evangelist and John of Patmos Other people with the given name Religious figures * John, father of Andrew the Apostle and Saint Peter * Pope Joh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Byrd Polar Research Center
The Byrd Polar and Climate Research Center (BPCRC) is a polar, alpine, and climate research center at Ohio State University founded in 1960. History and research The Byrd Polar Research Center (BPRC) at Ohio State University was established in 1960 as the Institute for Polar Studies. BPRC is the oldest research center at Ohio State University. The name was changed to the Byrd Polar Research Center in 1987 after the polar explorer and aviator Richard E. Byrd when Ohio State purchased the Byrd papers from the Byrd family in 1985. BPRC conducts interdisciplinary research at the nexus of Earth Sciences and Engineering. BPRC is known for its ice core paleoclimatology research collecting ice core records from Earth's highest and most remote ice fields and modeling polar climate variability. Studies at BPRC include paleoclimatology, remote sensing, polar meteorology, glacier dynamics, satellite hydrology, paleoceanography, geochemistry, environmental geochemistry, and climate change ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Ohio State University
The Ohio State University (Ohio State or OSU) is a public university, public Land-grant university, land-grant research university in Columbus, Ohio, United States. A member of the University System of Ohio, it was founded in 1870. It is one of the List of largest United States university campuses by enrollment, largest universities by enrollment in the United States, with nearly 50,000 undergraduate students and nearly 15,000 graduate students. The university consists of sixteen colleges and offers over 400 degree programs at the undergraduate and Graduate school, graduate levels. It is Carnegie Classification of Institutions of Higher Education, classified among "R1: Doctoral Universities – Very high research activity". the university has an List of colleges and universities in the United States by endowment, endowment of $7.9 billion. Its athletic teams compete in NCAA Division I as the Ohio State Buckeyes as a member of the Big Ten Conference for the majority of fielde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Moraine
A moraine is any accumulation of unconsolidated debris (regolith and Rock (geology), rock), sometimes referred to as glacial till, that occurs in both currently and formerly glaciated regions, and that has been previously carried along by a glacier or ice sheet. It may consist of partly rounded particles ranging in size from boulders (in which case it is often referred to as boulder clay) down to gravel and sand, in a groundmass of finely-divided clayey material sometimes called glacial flour. Lateral moraines are those formed at the side of the ice flow, and terminal moraines are those formed at the foot, marking the maximum advance of the glacier. Other types of moraine include ground moraines (till-covered areas forming sheets on flat or irregular topography) and medial moraines (moraines formed where two glaciers meet). Etymology The word ''moraine'' is borrowed from French language, French , which in turn is derived from the Savoyard dialect, Savoyard Italian ('mound of e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Reedy Glacier
The Reedy Glacier () is a major glacier in Antarctica, over long and wide, descending from the polar plateau to the Ross Ice Shelf between the Michigan Plateau and Wisconsin Range in the Transantarctic Mountains. It marks the limits of the Queen Maud Mountains on the west and the Horlick Mountains on the east. Naming The Reedy Glacier was mapped by United States Geological Survey (USGS) from surveys and United States Navy (USN) air photos, 1960–64. It was named by the Advisory Committee on Antarctic Names (US-ACAN) for Rear Admiral James R. Reedy, USN, Commander, U.S. Naval Support Force, Antarctica, from November 1962 until April 1965. Topography and ice flow The Reedy Glacier is the most southern large glacier that drains ice through the Transantarctic mountains from the Antarctic Plateau. It drains about of the polar plateau, with its catchment extending from south of the South Pole. It flows from the edge of the polar plateau at to become the Mercer Ice Stream a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Ohio Range
The Ohio Range () is a range in the Transantarctic Mountains of Antarctica. It is about long and wide, extending west-southwest – east-northeast from Eldridge Peak to Mirsky Ledge. The range forms the northeast end of the Horlick Mountains and consists primarily of a large snow-topped plateau with steep northern cliffs and several flat-topped ridges and mountains. The highest point, , is the summit of Mount Schopf. Exploration and naming The range was surveyed in 1958–59 by the United States Antarctic Research Program (USARP) Horlick Mountains Traverse. In October 1958 William E. Long (for whom the Long Hills are named) made a round trip by air from the Byrd Station in West Antarctica over the Wisconsin Range, Ohio Range, Thiel Mountains and Whitmore Mountains. Long noted that the Ohio Range has a thick layer of stratified rocks. Later a tractor train visited the base of Mount Glossopteris, where four of the party climbed the mountain and collected samples of rock and f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
