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Data Set ID:
NSIDC-0129

Siple Shallow Core Density Data, Version 1

This data set is part of the WAISCORES project, an NSF-funded project to understand the influence of the West Antarctic ice sheet on climate and sea level change. WAISCORES researchers acquired and analyzed ice cores from the Siple Dome, in the Siple Coast region, West Antarctica.

Lamorey measured the density of the shallow Siple Dome cores B - I. One-meter sections of the ice core were weighed on a balance beam in the field. The volume was determined by measuring the diameter and length of the core. The data consists of tab-delimited text files of density measurements and a sonic velocity profile, and a .gif format density-versus-depth plot. Data are available via FTP.

Geographic Coverage

Parameter(s):
  • Glaciers/Ice Sheets > Glacier Thickness/Ice Sheet Thickness
  • Ice Core Records
  • Snow/Ice > Ice Depth/Thickness
  • Glaciers/Ice Sheets > Ice Sheets
  • Snow/Ice > Snow Density
  • Snow/Ice > Snow Depth
  • Snow/Ice > Snow/Ice Chemistry
Spatial Coverage:
  • N: -81, S: -81, E: -149, W: -149

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 January 1996 to 31 December 2000
Temporal Resolution: Not specified
Data Format(s):
  • GIF
  • ASCII Text
Platform(s) GROUND STATIONS, GROUND-BASED OBSERVATIONS
Sensor(s): CORING DEVICES
Version: V1
Data Contributor(s): Gregg Lamorey
Please contact the data provider for the correct Data Citation for this data set.

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Detailed Data Description

Shallow Core Density Metadata

The density of the shallow ice cores were measured in the field. Approximately 1 meter long sections of the ice core were weighed on a balance beam after bagging the core and prior to storing in core tubes. The volume was determined by measuring the diameter and length of the core. The diameter was measured at three representative locations along the core with a pair of calipers, and the length was measured with either a meter ruler or a scale mounted on the saw apparatus. Average lengths were used for core with angled breaks on the ends.

The balance beam measurements were recorded to the gram, but these measurements were repeatable to about 4 grams. The diameters were recorded to the 0.01 mm but were repeatable to about 0.05 mm. The lengths were measured to the 1 mm and were repeatable to to about 1 mm. The largest source of error is likely due to cross sections that are not circular because of missing core caused by core dog gouges and breaks in the core. This is the most likely cause of the occasional low values on the density plots. Missing core is noted in the logbook.

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