The velocities are derived from the application of a cross-correlation technique to sequential images acquired in 2000 and 2001. Abstract. Flight Center. Antarctica is divided into two contrasting parts by the Transantarctic Mountains that cross the continent close to the ‘neck’ between the Weddell and Ross Se… And by comparing the measured ice elevations with previous ICESat tracks, we’ll be able to determine the rates at which the critical glaciers are losing volume. The investigators used radar sounding and laser altimetry from a Twin Otter aircraft flying at varying altitudes, at least 300 m above the surface, at an air speed of about 130 knots. Along the neighbouring Marie Byrd Land Sector, situated west of Thwaites Glacier to Ross Ice Shelf, glaciological change has been only sparsely monitored. 3.7; Rignot & Jacobs 2002). Registering imagery to ICESat data for measuring elevation changes on Byrd Glacier, Antarctica We demonstrate the feasibility of our method with aerial photographs that were acquired in 1978/79 for deriving velocities over Byrd Glacier [Brecher, 1982]. Over the past 20 years satellite remote sensing has captured significant downwasting of glaciers that drain the West Antarctic Ice Sheet into the ocean, particularly across the Amundsen Sea Sector. Over the past 20 years satellite remote sensing has captured significant downwasting of glaciers that drain the West Antarctic Ice Sheet into the ocean, particularly across the Amundsen Sea Sector. On the formation of blue ice on Byrd Glacier, Antarctica S.R.M. LENAERTS, M.R. The GPS reading gave the elevation of the highest point in Antarctica as 4,900 m (16,077 ft), eclipsing the earlier established heights recorded in 1959 and 1979. Santa Barbara, Distinct age v. elevation plots from north and south of Byrd Glacier indicate an offset of c. 1 km across the glacier with south side up. NY We present a new approach to derive control information from ICESat data that enables rigorous registration of aerial and satellite imagery. A Landsat image of the Byrd Glacier area was overlain on an Aster Global Digital Elevation Model and spot elevations of the Kukri erosion surface to the north and south of Byrd Glacier were mapped. This stream, the Recovery Ice Stream, slides roughly 35 billion tons of ice into the ocean each year. 1 Introduction A holistic approach to ice-sheet modeling requires smooth transitions from sheet flow to stream flow to shelf flow. This contact does not have any contact mechanisms listed. Named after American Antarctic explorer Richard E. Byrd, West Antarctica’s Byrd Glacier flows through a deep valley in the Transantarctic Mountains, covering a distance of 180 kilometers (112 miles) and descending more than 1,300 meters (4,300 feet) as it flows into the Ross Ice Shelf. The flights over Byrd Glacier were completed during the 2011/12 austral summer season in Antarctica, operating from McMurdo Station. This collection does not have any associated services at this time. Surface Elevation and Ice Thickness, Western Marie Byrd Land, Antarctica, Version 1 This data set provides surface elevation and ice thickness data for a portion of the Marie Byrd Land sector of West Antarctica, including the Ford Ranges, the Sulzberger Ice Shelf, much of the Edward VII Peninsula, and the Shirase Coast region of the eastern Ross Ice Shelf. Just as the Amazon, the Mississippi, the Zambezi, the Yangtze, and Earth’s other mighty rivers drain the continents, rivers also drain Antarctica, only in this frozen landscape, the rivers are ice. There is no archive and distribution information for this collection. Frezzotti and others (2000) and Rignot (2002) compared velocity measurements on David Glacier ( 75 8 S, 160 8 E, 550km north of Byrd Glacier) with catchment-wide accumulation rates and concluded that the glacier was either in positive balance or maintaining net balance, This image, captured by the Landsat 7 satellite on December 24, 1999, shows part of the Byrd Glacier flowing through the Transatlantic Mountains. BedMachine relies on the fundamental physics-based method of mass conservation to estimate what lies between the radar sounding lines, utilizing highly detailed information on ice flow … Along the neighbouring Marie Byrd Land Sector, situated west of Thwaites Glacier to Ross Ice Shelf, glaciological change has been only sparsely monitored. The glacial ice has a blue cast, and bears long stripes that echo the currents in a river. Its catchment basin covers an area of 1 070 400 km2 and this Isbræ. 3.7; Rignot & Jacobs 2002). Shown here are two perspectives of Byrd Glacier, one of the largest in Antarctica. We present a new approach to derive control information from ICESat data that enables rigorous registration of aerial and satellite imagery. Abstract. The current in this ice stream carries the glacier towards the Ross Ice Shelf at a rate of one half mile per year. Feb 21, 2014 - Named after American Antarctic explorer Richard E. Byrd, West Antarctica’s Byrd Glacier flows through a deep valley in the Transantarctic Mountains, covering a distance of 180 kilometers (112 miles) and descending more than 1,300 meters (4,300 feet) as it flows into the Ross Ice Shelf. Satellite Offers a Room With the Best View of Antarctica, NASA Goddard Space Located near McMurdo Station, the principal U.S. Antarctic Research Base, the Byrd Glacier plunges through a deep, 15-mile-wide valley in the Transatlantic Mountains to create a 100-mile-long, rock-floored ice stream. CA Byrd Glacier, Antarctica. BPRC researchers studying glacier dynamics are developing and applying innovative methods for observing ongoing glacier, through remote sensing and field measurements, and are using these observations to build quantitative models of ice flow. Snow and Ice. This image shows the latest estimate of the ice edge around Law Promontory, which juts out from East Antarctica’s coastline near Stefansson Bay. Author icebridge Posted on February 17, 2010 June 19, 2013 Tags aircraft , Antarctica , Martin , science 3 Comments on The Road to Antarctic Science Accuracy and corrections of satellite elevation data sets for quantification of glacier changes, The Cryosphere Discussions, 10.5194/tcd-4-2013-2010, 4, 4, (2013-2077), (2010). On Byrd Glacier, Antarctica, flow stripes are especially prominent and can be detected on A VHRR imagery down to the ice shelf margin. Liang Q, Zhou C, Howat I, *Jeong S, Liu R, Chen Y. Palisades, The National Science Foundation, which manages the U.S. Antarctic Program (USAP), had plans as of June 2009 to build a new camp to support a number of scientific projects in West Antarctica, including work at Pine Island Glacier. Named after American Antarctic explorer Richard E. Byrd, West Antarctica’s Byrd Glacier flows through a deep valley in the Transantarctic Mountains, covering a distance of 180 kilometers (112 miles) and descending more than 1,300 meters (4,300 feet) as it flows into the Ross Ice Shelf. In some places, steep mountains channel the flowing ice sheet into fast-moving rivers of ice. We used ice thickness information derived from radar data in conjunction with surface elevation data to generate bed maps for these two critical glaciers. The icy surface is dynamic, with glaciers and "streams" of ice flowing toward the ocean. A terrain-feature-based method was proposed in [43] to register the historical aerial images to ICESat data for measuring the elevation changes on Byrd Glacier, Antarctica. The project was part of the International Polar Year (IPY) focusing on large-scale research efforts about Earth’s polar regions. Whillans Ice Stream, West Antarctica) to isbræ (high speeds achieved under high driving stress, wide lateral shear margins; e.g. Arturo Prat 514, Valdivia, Castilla 1469, Chile E-mail: gc@cecs.cl 2 Laboratorio de Glaciolog ´a, Departamento de Geograf ´a, Universidad de Chile, Marcoleta 250, Santiago, Chile A terrain-feature-based method was proposed in [43] to register the historical aerial images to ICESat data for measuring the elevation changes on Byrd Glacier, Antarctica. As yet, no subglacial lakes identified previously by RES are coincident with Ice, Cloud and land Elevation Satellite Draining from the East Antarctic Ice Sheet is a river of ice nearly 800 kilometers long.
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