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	   gmd:Hierarchy_Level_Name:  AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica
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	               gmd:title:  AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica
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	                     gmd:date:  2012
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	                  gmd:Date:  2012-05-03
	               gmd:identifier:  NSIDC-0517
	               gmd:identifier:  http://dx.doi.org/10.7265/N5W95730
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	         gmd:Abstract:  
	
	            This data set contains line-based radar-derived ice thickness and bed 
	            elevation data, collected as part of the Airborne Geophysical Survey of the 
	            Amundsen Embayment (AGASEA) expedition, which took place over Thwaites Glacier 
	            in West Antarctica from 2004 to 2005. The data set includes ice thickness, ice 
	            sheet bed elevation, and ice sheet surface elevation, derived from 
	            ice-penetrating radar and aircraft GPS positions. The data are spaced on a 15 
	            km by 15 km grid over the entire catchment of the glacier, and sampled at 
	            approximately 15 meters along track. Most of the radar data used for this 
	            dataset has been processed using a 1-D focusing algorithm, to reduce the along 
	            track resolution to tens of meters, to improve boundary conditions for ice 
	            sheet models. 

Data are available via FTP in space-delimited ASCII format.
	         gmd:Purpose:  Scientific Research
	         gmd:Credit:  Blankenship, D. D., D. A. Young, J. W. Holt, and S. D. Kempf. 2012. AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5W95730. 
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