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Spatial Variability in Firn Properties from Borehole Optical Stratigraphy at the Inland WAIS Core Site
Entry ID: waddington_0538639

Abstract: Award Abstract #0538639
Spatial Variability in Firn Properties from Borehole Optical Stratigraphy at the Inland WAIS Core Site

This award supports a project to study the patterns of accumulation variation and microstructural properties near the WAIS Divide ice core site in a 2.5 km array of 20 m boreholes. Borehole Optical Stratigraphy (BOS) is a novel optical measurement system that detects ... View entire text
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Description: NSF Award Abstract #0538639
Geographic Coverage
Spatial coordinates   
  N: -79.4   S: -79.5   E: -112.0   W: -112.1
Min Altitude: 1760 M
Max Depth: 15 M

Data Set Citation
Dataset Originator/Creator: Ben Smith
Dataset Title: Inland WAIS Borehole Optical Stratigraphy Brightness Logs
Temporal Coverage
Start Date: 2005-11-01
Stop Date: 2006-02-01
Quality The signals measured in the video logs include a wide variety of variations that may not be caused by variations in firn properties. In particular, camera angle and position variations relative to the borehole axis have introduced errors in the brightness signal that are not related to firn property variations. In addition, the gain setting of the camera varies abruptly in some cases, and cannot be easily corrected for. Scars in the borehole wall also produce significant short-scale features in the brightness log.
Data Set Progress
Data Center
National Snow and Ice Data Center Supplemental Info
Data Center URL:

Data Center Personnel
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
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Phone: 206 543 4585
Fax: 206 543 0489
Email: edw at
Contact Address:
University of Washington
Dept. of Earth and Space Sciences
Box 351310
City: Seattle
Province or State: WA
Postal Code: 98195-1310
Country: USA
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An error analysis applicable to these data is described in “Light propagation in firn: application to borehole video” by T. J. FUDGE and Benjamin SMITH, submitted to Journal of Glaciology (10J031).
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2010-04-01
Last DIF Revision Date: 2017-08-24