image of ice streams flowing into the Filchner Ronne Ice Shelf An icestream is a region of an ice sheet that moves significantly faster than the surrounding ice . Ice streams are a type of glacier . ref name NSIDC Cite web author National Snow and Ice Data Center title Types of Glacier url http www.nsidc.org ...NOTOC Image Bambervelocity.jpg thumb 250px right Velocity map of Antarctica. Ice streams can be seen with increasing speeds blue yellow white flowing toward the coast. ref name bamber2000 cite journal ... Ice Sheet journal Science journal Science volume 287 pages 1248 1250 year 2000 doi 10.1126 science.287.5456.1248 ... for 10 of the volume of the ice. They are up to 50 km wide, 2 km thick, can stretch for hundreds of kilometres, and account for most of the ice leaving the ice sheet. The speed of an icestream can be over 1,000 meters per year, an order of magnitude faster than the surrounding ice. The Sheer stress shear forces at the edge of the icestream cause deformation and crystal recrystallization of the ice, making it softer, and concentrating the deformation in narrow bands or shear margins. Crevasse s form, particularly around the shear margins. Most ice streams have some water ... Survey title Description of Ice Streams url http www.antarctica.ac.uk about antarctica geography ice streams.php accessdate 2009 01 26 ref Antarctica See also List of Antarctic ice streams The Antarctic Ice Sheet is drained to the sea by several ice streams. The largest in East Antarctica is Lambert ... ice mass loss from radar interferometry and regional climate modelling journal Nature Geoscience ... ice sheet is losing mass. The past and ongoing acceleration of ice streams and outlet glaciers is considered ... Greenland Ice streams that drain the Greenland ice sheet into the sea include Helheim Glacier ... articles 20070331 bob9.asp Fits and Starts What regulates the flow of huge ice streams? Category Glaciers Category Bodies of ice ar fr Courant glaciaire it Flusso di ghiaccio fi ... more details
The Echelmeyer IceStream coord 79 10 S 150 00 E is a glaciological feature of the West Antarctic Ice Sheet , formerly known as IceStream F. It was renamed in 2001 in honor of Geophysical Institute , University of Alaska, Fairbanks glaciologist Dr. Keith Echelmeyer , who was a student of Barclay Kamb for whom Kamb IceStream is named. The icestream flows west to the Shirase Coast to the north of the MacAyeal IceStream . Sources http igloo.gsfc.nasa.gov wais articles acan.html Antarctic Glaciologists Honored by ACAN usgs gazetteer WAntarctica geo stub Category Glaciers of Antarctica ... more details
File Ice Streams in Antarctica.jpg thumb right Ice streams in Antarctica MacAyeal IceStream coord 80 00 S 143 00 W , formerly IceStream E , flows west to the juncture of Shirase and Siple Coast s between Bindschadler IceStream and Echelmeyer IceStream , Antarctica. It is one of several major icestream s draining from Marie Byrd Land into the Ross Ice Shelf . The ice streams were investigated and mapped by USARP personnel in a number of field seasons from 1983 84 and named IceStream A, B, C, etc., according to their position from south to north. The name was changed by US ACAN in 2002 to honor Douglas R. MacAyeal, Department of Geophysical Sciences, University of Chicago, Chicago, IL, USAP investigator in the Ross Sea area including study of the Ross Ice Shelf, the West Antarctic Ice Sheet and the Marie Byrd Land ice streams, 1989 2002. ref name USGSgnismacayeal cite web url gnis3 type antarid 17771 title MacAyeal IceStream work Geographic Names Information System publisher United States Geological Survey accessdate 2009 11 06 ref See also List of glaciers in the Antarctic List of Antarctic ice streams References reflist usgs gazetteer WAntarctica geo stub Category Ice streams of Antarctica ... more details
File Ice Streams in Antarctica.jpg thumb right Ice streams in Antarctica Mercer IceStream coord 84 50 S 145 00 W , formerly IceStream E , flows west to Gould Coast to the south of Whillans IceStream , Antarctica. It is the southern most of several major icestream s draining from Marie Byrd Land into the Ross Ice Shelf . The ice streams were investigated and mapped by USARP personnel in a number of field seasons from 1983 84 and named IceStream A, B, C, etc., according to their position from south to north. The name was changed by US ACAN in 2002 to honor John H. Mercer 1922 87 , Quaternary geologist, Institute of Polar Studies now Byrd Polar Research Center , Ohio State University, who mapped the moraines above Reedy Glacier and in Ohio Range at the head of Horlick IceStream , the major tributaries to Mercer IceStream. ref name USGSgnismercer cite web url gnis3 type antarid 17767 title Mercer IceStream work Geographic Names Information System publisher United States Geological Survey accessdate 2009 11 06 ref See also List of glaciers in the Antarctic List of Antarctic ice streams References reflist usgs gazetteer WAntarctica geo stub Category Ice streams of Antarctica ... more details
Foundation IceStream coord 83 15 S 60 0 W is a major icestream in Antarctica s Pensacola Mountains . The icestream drains northward for 150 miles along the west side of the Patuxent Range and the Neptune Range to enter Ronne Ice Shelf westward of Dufek Massif . The United States Geological Survey USGS mapped the stream from surveys and USN air photos, 1956 66. The Advisory Committee on Antarctic Names US ACAN named the stream in recognition of the National Science Foundation , which provided major support of the U.S. Antarctic Research Program during this period. usgs gazetteer WAntarctica geo stub Category Ice streams of Antarctica ... more details
File Ice Streams in Antarctica.jpg thumb right Ice streams in Antarctica Kamb IceStream coord 82 15 S 145 00 W type glacier region AQ display inline,title , a glaciological feature of the West Antarctic Ice Sheet , formerly known as IceStream C , renamed in 2001 in honor of Caltech Glaciologist Dr. Barclay Kamb . Sources http igloo.gsfc.nasa.gov wais articles acan.html Antarctic Glaciologists Honored by ACAN WAntarctica geo stub Category Ice streams of Antarctica ... more details
Moller IceStream coor dm 82 20 S 63 30 W is an icestream flowing north northeast into Ronne Ice Shelf to the west of Foundation IceStream . The drainage basin of this icestream is separated by Rambo Nunataks from the drainage basin of Foundation IceStream. The feature was delineated from U.S. Landsat imagery commissioned by the Institut fur Angewandte Geodasie , Frankfurt am Main, Germany, recorded January March , 1986. Named after Dietrich Moller , German engineer, Professor and Director, Institute for Land Survey , Technical University of Braunschweig, from 1972 Deputy Leader and in charge of geodetic work at Filchner Station on Ronne Ice Shelf, 1979 80. usgs gazetteer antarctica geo stub Category Geography of Antarctica ... more details
orphan date March 2010 Institute IceStream coord 82 0 S 75 0 W is an icestream flowing north into Ronne Ice Shelf , southeast of Hercules Inlet . The feature was traversed by the United States Antarctic Research Program USARP Ellsworth Byrd Seismic Party , 1958 59, and the USARP University of Wisconsin Seismic Party, 1963 64. It was delineated by the Scott Polar Research Institute SPRI NSF TUD airborne radio echo sounding program, 1967 79, and in association with Foundation IceStream and Support Force Glacier , named after the Scott Polar Research Institute, Cambridge, England. usgs gazetteer WAntarctica geo stub Category Ice streams of Antarctica ... more details
File Ice Streams in Antarctica.jpg thumb right Ice streams in Antarctica Bindschadler IceStream coord 81 00 S 142 00 W , a glaciological feature of the West Antarctic Ice Sheet , formerly known as IceStream D , renamed in 2001 in honor of NASA Goddard Space Flight Center Glaciologist Dr. Robert Bindschadler . See also List of glaciers in the Antarctic List of Antarctic ice streams Sources http igloo.gsfc.nasa.gov wais articles acan.html Antarctic Glaciologists Honored by ACAN usgs gazetteer WAntarctica geo stub Category Ice streams of Antarctica ... more details
IceStream work Geographic Names Information System publisher United States Geological Survey accessdate 2009 11 06 ref The icestream is situated in a deep trough which is a tectonic feature between the Ellsworth Mountains and the Fletcher Promontory. Because of this the icestream position may have been stable for millions of years. The bed of the icestream reaches 2000 m below sea level. Therefore between the bed of the icestream and the height of the Ellsworth Mountains there is a vertical ... The West Antarctic Ice Sheet Behaviour and Environment publisher American Geophysical Union year 2001 pages 221 235 chapter Rutford IceStream, Antarctica isbn 0875909574 lastauthoramp y ref At the upper inland end of the icestream the ice thickness reaches 3100 m falling to around 2300 ... inland from where the icestream meets the Ronne Ice Shelf and starts to float on the sea. ref name wais2001 The Rutford icestream varies its speed by as much as 20 every two weeks, in response to variations ...Image FRicestreams.jpg thumb 300px right Radarsat image of ice streams, including the Rutford, flowing into the Filchner Ronne Ice Shelf File Vinson Map.jpg thumb Sentinel Range map Rutford IceStream coord 79 00 S 81 00 W is a major Antarctic icestream , about 180 miles long and over 15 miles wide, which drains southeastward between the Sentinel Range , Ellsworth Mountains and Fletcher Ice Rise into the southwest part of Ronne Ice Shelf . Named by US ACAN for geologist Robert H. Rutford, a member of several USARP expeditions to Antarctica leader of the University of Minnesota Ellsworth Mountains Party, 1963 64. Rutford served as Director of the Division of Polar Programs, National ... 2006 12 061221075130.htm ScienceDaily, Tidal Motion Influences Antarctic Ice Sheet Dec. 24, 2006 ref See also List of glaciers in the Antarctic List of Antarctic ice streams References reflist usgs gazetteer Category West Antarctica Category Ellsworth Mountains Category Ice streams of Antarctica ... more details
Image FRicestreams.jpg thumb 300px right Radarsat image of ice streams, including the M ller, flowing into the Filchner Ronne Ice Shelf M ller IceStream coord 82 20 S 63 30 W is an Antarctic icestream flowing north northeast into the Ronne Ice Shelf to the west of Foundation IceStream . The drainage basin of this icestream is separated by Rambo Nunataks from the drainage basin of Foundation IceStream. The feature was delineated from U.S. Landsat imagery commissioned by the Institut fur Angewandte Geodasie, Frankfurt am Main, Germany, recorded January March, 1986. Named after Dietrich M ller, German engineer, Professor and Director, Institute for Land Survey, Technical University of Braunschweig, from 1972 Deputy Leader and in charge of geodetic work at Filchner Station on Ronne Ice Shelf, 1979 80. ref name USGSgnismoller cite web url gnis3 type antarid 10136 title M ller IceStream work Geographic Names Information System publisher United States Geological Survey accessdate 2009 11 10 ref The M ller IceStream drains an area of 66 000 km of the West Antarctic Ice Sheet . ref name bingham2009 cite journal author Bingham R.G., Seigert M.J. title Quantifying subglacial bed roughness in Antarctica implications for ice sheet dynamics and history journal Quaternary Science Reviews volume 28 pages 223 236 year 2009 doi 10.1016 j.quascirev.2008.10.014 ref See also List of glaciers in the Antarctic List of Antarctic ice streams References reflist usgs gazetteer DEFAULTSORT Moller IceStream Category West Antarctica Category Ice streams of Antarctica fr Courant glaciaire M ller ... more details
Patuxent IceStream coord 85 15 S 67 45 W is a broad Antarctic icestream between the Patuxent Range and Pecora Escarpment in the Pensacola Mountains , draining northwestward to the upper part of Foundation IceStream . Mapped by U.S. Geological Survey USGS from surveys and U.S. Navy USN air photos, 1956 66. Named by Advisory Committee on Antarctic Names US ACAN for its proximity to the Patuxent Range. ref name USGSgnispatuxent cite web url gnis3 type antarid 11445 title Patuxent IceStream work Geographic Names Information System publisher United States Geological Survey accessdate 2009 11 10 ref See also List of glaciers in the Antarctic List of Antarctic ice streams References reflist usgs gazetteer Category West Antarctica Category Ice streams of Antarctica ... more details
Evans IceStream coord 76 0 S 78 0 W is a large icestream draining from Ellsworth Land , between Cape Zumberge and Fowler Ice Rise , into the western part of Ronne Ice Shelf . The feature was recorded on February 5, 1974 in Landsat imagery. It was named by the UK Antarctic Place Names Committee UK APC for Stanley Evans, British physicist who, starting in 1961, developed apparatus for radio echo sounding of icecaps and glaciers from aircraft he carried out upper atmosphere research at Brunt Ice Shelf , 1956 57. usgs gazetteer WAntarctica geo stub Category Ice streams of Antarctica ... more details
Orphan date February 2009 Shimizu IceStream Coord 85 11 S 124 0 W is an icestream in the Horlick Mountains , draining west northwest from the area between Wisconsin Range and Long Hills to enter the south flank of Horlick IceStream . Mapped by United States Geological Survey USGS from surveys and U.S. Navy air photos, 1959 64. Named by Advisory Committee on Antarctic Names US ACAN after Hiromu Shimizu , glaciologist, Byrd Station winter party, 1961, later Associate Professor , Institute of Low Temperature Science , Hokkaido, Japan. usgs gazetteer Category Ice streams of Antarctica EAntarctica geo stub ... more details
Orphan date December 2010 Lidke IceStream coor dm 73 30 S 76 30 W is an icestream about 25 nautical miles 46 km long flowing north into Stange Sound , east of Mount Benkert , on the English Coast of Ellsworth Land . Mapped by United States Geological Survey USGS from surveys and U.S. Navy aerial photographs, 1961 66. The icestream was first visited by a USGS field party in January 1985. Named by Advisory Committee on Antarctic Names US ACAN after David J. Lidke , USGS geologist, a member of the party. usgs gazetteer Category Geography of Antarctica WAntarctica geo stub ... more details
Horlick IceStream coord 85 17 S 132 00 W is a large Antarctic icestream on the featureless ice surface to the north of the main mass of the Horlick Mountains , draining west southwestward, parallel to these mountains, to enter the lower portion of the Reedy Glacier . Mapped by U.S. Geological Survey USGS from surveys and U.S. Navy USN air photos, 1960 64. Named by Advisory Committee on Antarctic Names US ACAN in association with Horlick Mountains. ref name USGSgnishorlick cite web url gnis3 type antarid 6988 title Horlick IceStream work Geographic Names Information System publisher United States Geological Survey accessdate 2009 11 10 ref See also List of glaciers in the Antarctic List of Antarctic ice streams References reflist usgs gazetteer Category Glaciers of Antarctica Category West Antarctica ... more details
Bailey IceStream coord 79 0 S 30 0 W is an icestream on the northern margin of the Theron Mountains , flowing westsouthwest to the Filchner Ice Shelf . It was named by the UK Antarctic Place Names Committee UK APC after Jeremy Thomas Bailey 1941 65 , a BAS glaciologist , who with two companions died in a crevasse accident during a radio echo sounding traverse inland from Halley Station on October 12, 1965. On an earlier traverse in April, 1965, Bailey sounded the upper portion of this feature. usgs gazetteer EAntarctica geo stub Category Ice streams of Antarctica ... more details
File Ice Streams in Antarctica.jpg thumb right Ice streams in Antarctica Whillans IceStream coord 83 40 S 145 00 W type glacier region AQ display inline,title , a glaciological feature of the West Antarctic Ice Sheet , formerly known as IceStream B , renamed in 2001 in honor of Ohio State University glaciologist Dr. Ian Whillans . Recent Research Whillans IceStream is one of about a half dozen large, fast moving rivers of ice pouring from the West Antarctic Ice Sheet into the Ross Ice Shelf . The icestream is the subject of different glaciological studies, one of which is looking at subglacial lake s that researchers believe may be speeding the movement of the ice as they periodically fill and drain. ref cite web title The Antarctic Sun Subglacial Waterworks url http antarcticsun.usap.gov science contentHandler.cfm?id 1726 ref Other researchers, also funded by the National Science Foundation , reported in the June 5, 2008 issue of the journal Nature that from seismological and GPS data they discovered the Whillans IceStream releases two bursts of seismic waves every day, each one equivalent to a magnitude 7 earthquake . The data show that the river of ice moves about a half meter within ten minutes, remains still for 12 hours, then moves another half meter. Each time it moves, it emits seismic waves that are recorded at seismographs around Antarctica , and even as far away as Australia , a distance of more than 6,400 kilometers. ref cite web title The Antarctic Sun Earthshaking Discovery url http antarcticsun.usap.gov science contentHandler.cfm?id 1476 ref Sources http igloo.gsfc.nasa.gov wais articles acan.html Antarctic Glaciologists Honored by ACAN Notes and references reflist 2 refbegin WAntarctica geo stub Category Ice streams of Antarctica ... more details
Orphan date November 2010 Wiesnet IceStream coor dm 73 24 S 86 52 W is an iceStream about 15 nautical miles 28 km long flowing into Venable Ice Shelf west of Allison Peninsula . Named by Advisory Committee on Antarctic Names US ACAN after Donald R. Wiesnet , National Oceanic and Atmospheric Administration , pioneer, from the 1970s to the 1980s, in the use of remotely sensed data for mapping Antarctica and first to conceive of the use of polar orbiting satellite data to completely map the continent. usgs gazetteer Category Geography of Antarctica antarctica geo stub ... more details
Orphan date February 2009 Williams IceStream coord 73 15 S 88 27 W type glacier region AQ display inline,title is an icestream about fifteen mile s 24 Kilometer km long flowing into Venable Ice Shelf just east of Fletcher Peninsula . Named by Advisory Committee on Antarctic Names US ACAN after Richard S. Williams , Jr., senior research geologist, United States Geological Survey USGS , Woods Hole , Massachusetts, authority in aerial and satellite investigations of geomorphic processes and the fluctuations of glaciers on a global basis, particularly in Iceland and Antarctica project leader of the team that is compiling 25 Glaciological and Coastal Change Maps of Antarctica, and that compiled the 1 5,000,000 scale Advanced Very High Resolution Radiometer maps of Antarctica. usgs gazetteer WAntarctica geo stub Category Ice streams of Antarctica ... more details
Orphan date December 2010 Alison IceStream coor dm 73 55 S 82 4 W is an iceStream about 8 nautical miles 15 km long flowing into Eltanin Bay south of Wirth Peninsula . Named by Advisory Committee on Antarctic Names US ACAN after Alison Cook , British Antarctic Survey , computer specialist, part of the USA UK cooperative project to compile Glaciological and Coastal Change Maps of the Antarctic Peninsula in the late 1990s and early 2000s. usgs gazetteer Category Geography of Antarctica WAntarctica geo stub ... more details
Orphan date December 2010 Berg IceStream coor dm 73 42 S 78 20 W is an icestream about 30 nautical miles 60 km long flowing into Carroll Inlet between Rydberg Peninsula and Espenschied Nunatak , on the English Coast , Ellsworth Land . Mapped by United States Geological Survey USGS from surveys and U.S. Navy air photos, 1961 66. Named by Advisory Committee on Antarctic Names US ACAN after Captain Harold Berg , commander of USNS Eltanin on Antarctic cruises, 1964 65. usgs gazetteer Category Geography of Antarctica WAntarctica geo stub ... more details
Blackwall IceStream coor dm 82 52 S 35 21 W is a slightly S shaped icestream about 240 nautical miles 440 km long and 12 nautical miles 22 km wide. It descends from c.1900 m to 730 m where it joins Recovery Glacier between Argentina Range and Whichaway Nunataks . Named after Hugh Blackwall Evans 1874 1975 , English born Canadian naturalist with the British Antarctic Expedition , 1898 1900, led by Carsten E. Borchgrevink . usgs gazetteer antarctica geo stub Category Geography of Antarctica ... more details
Orphan date December 2010 Fox IceStream coor dm 73 28 S 85 29 W is an icestream about 6 nautical miles 11 km long flowing into Eltanin Bay southwest of Wirth Peninsula . Named by Advisory Committee on Antarctic Names US ACAN after Adrian Fox , British Antarctic Survey , part of the USA UK cooperative project to compile Glaciological and Coastal Change Maps of the Antarctic Peninsula , active in field and mapping projects from the early 1990s to the present. usgs gazetteer Category Rivers of Antarctica WAntarctica geo stub ... more details
Ferrigno IceStream coor dm 73 43 S 83 49 W is an iceStream more than 15 nautical miles 28 km long flowing into Eltanin Bay southwest of Wirth Peninsula . Named by Advisory Committee on Antarctic Names US ACAN after Jane G. Ferrigno , United States Geological Survey USGS , Reston, Virginia, specialist from the 1970s to the present in the use of satellite imagery for glacier studies and map compilation, co leader of the USGS team that compiled the 1 5,000,000 scale Advanced Very High Resolution Radiometer maps of Antarctica, and task leader of the team that is compiling 25 Glaciological and Coastal Change Maps of Antarctica. usgs gazetteer antarctica geo stub Category Geography of Antarctica ... more details
Encyclopedia
top
