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	               gmd:title:  Annual Layers at Siple Dome, Antarctica, from Borehole Optical Stratigraphy
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	                     gmd:date:  2012
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	                  gmd:Date:  2012-04-15
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	         gmd:Abstract:  
	
	            Researchers gathered data on annual snow layers at Siple Dome, Antarctica, 
	            using borehole optical stratigraphy. This data set contains annual layer 
	            depths and firn optical brightness. The brightness log is a record of 
	            reflectivity of the firn, and peaks in brightness are interpreted to be 
	            fine-grained high-density winter snow, as part of the wind slab depth-hoar 
	            couplet. 

Data are available via FTP in ASCII text (.txt) format
	         gmd:Purpose:  Scientific Research
	         gmd:Credit:  Waddington, Edwin, Robert Hawley, Richard Alley, and Ken Taylor. 2012. Annual Layers at Siple Dome, Antarctica, from Borehole Optical Stratigraphy. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5DB7ZRZ. 
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