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Ice-sheet bed 3-D tomography
dc.contributor.author | Paden, John D. | |
dc.contributor.author | Akins, Torry L. | |
dc.contributor.author | Dunson, David | |
dc.contributor.author | Allen, Christopher Thomas | |
dc.contributor.author | Gogineni, Sivaprasad | |
dc.date.accessioned | 2015-11-11T17:18:36Z | |
dc.date.available | 2015-11-11T17:18:36Z | |
dc.date.issued | 2010-04 | |
dc.identifier.citation | Paden, John, Torry Akins, David Dunson, Chris Allen, and Prasad Gogineni. "Ice-sheet Bed 3-D Tomography." Journal of Glaciology 56.195 (2010): 3-11. http://dx.doi.org/10.3189/002214310791190811 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/18879 | |
dc.description | This is the published version. Copyright 2010 International Glaciological Society | en_US |
dc.description.abstract | Information on bed topography and basal conditions is essential to developing the next-generation ice-sheet models needed to generate a more accurate estimate of ice-sheet contribution to sea-level rise. Synthetic aperture radar (SAR) images of the ice–bed can be analyzed to obtain information on bed topography and basal conditions. We developed a wideband SAR, which was used during July 2005 to perform measurements over a series of tracks between the GISP2 and GRIP cores near Summit Camp, Greenland. The wideband SAR included an eight-element receive-antenna array with multiple-phase centers. We applied the MUltiple SIgnal Classification (MUSIC) algorithm, which estimates direction of arrival signals, to single-pass multichannel data collected as part of this experiment to obtain fine-resolution bed topography. This information is used for producing fine-resolution estimates of bed topography over a large swath of 1600m, with a 25m posting and a relative accuracy of approximately 10m. The algorithm-derived estimate of ice thickness is within 10m of the GRIP ice-core length. Data collected on two parallel tracks separated by 500m and a perpendicular track are compared and found to have difference standard deviations of 9.1 and 10.3m for the parallel and perpendicular tracks, respectively. | en_US |
dc.publisher | International Glaciological Society | en_US |
dc.title | Ice-sheet bed 3-D tomography | en_US |
dc.type | Article | |
kusw.kuauthor | Allen, Christopher Thomas | |
kusw.kuauthor | Gogineni, Sivaprasad | |
kusw.kuauthor | Paden, John D. | |
kusw.kudepartment | Engineering Administration | en_US |
kusw.kudepartment | Electrical Engr & Comp Science | en_US |
kusw.kudepartment | Ctr Remote Sensing Ice Sheets | en_US |
dc.identifier.doi | 10.3189/002214310791190811 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |