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	   gmd:Hierarchy_Level_Name:  GPS Ice Flow Measurements, Allan Hills, Antarctica
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	         gmd:citation:  
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	               gmd:title:  GPS Ice Flow Measurements, Allan Hills, Antarctica
	               gmd:date:  
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	                     gmd:date:  2011
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	               gmd:editionDate:  
	                  gmd:Date:  2011-12-20
	               gmd:identifier:  NSIDC-0507
	               gmd:identifier:  http://dx.doi.org/10.7265/N5NS0RSX
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	                              gmd:administrativeArea:  CO
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	                              gmd:administrativeArea:  CO
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	         gmd:Abstract:  
	
	            This data set includes includes high-precision GPS measurements of steel poles 
	            within the Allan Hills Main Ice Field, Near Western Ice Field, and extending 
	            to the eastern edge of the Middle Western Ice Field, in Antarctica. These data 
	            were collected between December 1997 and December 2010. The extended survey 
	            period allowed for vertical and horizontal velocities to be calculated with 
	            low associated error. Parameters include locations of poles in latitude and 
	            longitude, as well as elevation, ice velocity, and accumulation rates.

Data 
	            are available via FTP as ASCII text files in comma separated value (.csv) 
	            format. Raw data are also provided as Trimble raw data, compressed in .zip 
	            format, and supplementary information is provided in .csv format and portable 
	            document format (.pdf).
	         gmd:Purpose:  Scientific Research
	         gmd:Credit:  Kurbatov, A, G. Hamilton, V. Spikes and N. Spaulding.. 2011. GPS Ice Flow Measurements, Allan Hills, Antarctica. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5NS0RSX. 
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	            gmd:individualName:  Andrei V. Kurbatov
	            gmd:organisationName:  Climate Change Institute
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	                     gmd:city:  Orono
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	            gmd:individualName:  Vandy Blue Spikes
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	            gmd:individualName:  Gordon S. Hamilton
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