This data set contains firn physical properties measured in two meter snow pits and from deeper, 12- to 30-meter firn cores. The physical properties measured in the snow pits include density, permeability and microstructure (grain size and pore size). The physical properties measured on firn cores include density, permeability, diffusivity and microstructure. Data are available in Microsoft Excel format and ADOBE PDF and are available via FTP.
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Snow and Firn Permeability: Characteristics of Snow Megadunes and their Potential Effects on Ice Core Interpretation, Version 1
Geographic Coverage
Spatial Coverage: |
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Spatial Resolution: | Not Specified |
Temporal Coverage: |
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Temporal Resolution: | Not specified |
Parameter(s): |
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Platform(s) | Not specified |
Sensor(s): | PERMEAMETERS |
Data Format(s): |
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Version: | V1 |
Data Contributor(s): | Mary Albert, Zoe Courville, Mac Cathles |
Metadata XML: | View Metadata Record |
Data Citation
As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.
Albert, M. R., Z. Courville, and M. Cathles. 2007. Snow and Firn Permeability: Characteristics of Snow Megadunes and their Potential Effects on Ice Core Interpretation, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: http://dx.doi.org/10.7265/N5639MPD. [Date Accessed].Detailed Data Description
Data files are in Microsoft Excel format viewable with spreadsheet software and an Adobe Acrobat PDF.
Files are named according to the following convention.
File name | File Size | Description |
---|---|---|
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340 KB | Microsoft Excel File |
The data set is approximately 340 KB.
Southernmost Latitude: 80.7802° S
Northernmost Latitude: 80.5304° S
Westernmost Longitude: 124.0218° E
Easternmost Longitude: 126.0302° E
Elevation: 2900 m
Parameter Description
The measured parameters are snow density, permeability, microstructure and thermal conductivity.
Sample Data Record
The data below are the first 10 data samples showing density data.
depth
|
pit1
|
pit2
|
pit3
|
---|---|---|---|
1.5
|
0.42
|
0.36
|
0.25
|
4.5
|
0.27
|
0.42
|
0.36
|
7.5
|
0.41
|
0.48
|
0.28
|
10.5
|
0.31
|
0.44
|
0.36
|
13.5
|
0.36
|
0.39
|
0.41
|
16.5
|
0.35
|
0.4
|
0.43
|
19.5
|
0.3
|
0.39
|
0.41
|
22.5
|
0.3
|
0.39
|
0.36
|
25.5
|
0.43
|
0.38
|
0.29
|
28.5
|
0.48
|
0.42
|
0.38
|
Software and Tools
Data Acquisition and Processing
Locations:
Pit 1 80.77914° S, 124.28796° E
Pit 2 80.7901° S, 124.4345° E
Pit 3 80.7754° S, 124.526° E
Density in densdata.xls, taken using 100cc boxcutter and spring scale depth (cm) at center of sample, density (g/cc)
Dates: pit 1 Jan 07 04, pit 2 Jan 11 04, pit 3 Jan 16 04
Permeability in permdata.xls, measured using CRREL permeameter depth (cm) at center of sample, permeability (x 10-10 m2)
Dates: pit 1 Jan 09 04, pit 2 Jan 12 04, pit 3 Jan 17 04
Microstructure in msdata.xls, done following method of Perla (1989) depth (cm), center of sample, grain size, pore size (mm)
Dates: pit 1 Jan 08 04, pit 2 Jan 11 04, pit 3 Jan 17 04
Thermal conductivity in thcdata.xls, measured in lab using transient needle probe depth (cm) at center of sample, thermal conductivity, W m-1 K-1, samples collected Jan 07-16 04
The custom designed permeameter draws air through the sample, and measures the pressure drop and flow rate through the sample.
References and Related Publications
Contacts and Acknowledgments
Mary Albert
Cold Regions Research and Engineering Laboratory
72 Lyme Road
Hanover, New Hampshire
USA 03755-1290
Zoe Courville
Cold Regions Research and Engineering Laboratory
72 Lyme Road
Hanover, New Hampshire
USA 03755-1290
Lawrence Cathles
University of Chicago
Department of the Geophysical Sciences
5734 S. Ellis Avenue
Chicago, Illinois 60637 USA
This research was supported by National Science Foundation (NSF) Office of Polar Programs (OPP) grant 0125276 awarded to M. Albert.
Document Information
Document Creation Date
November 2007
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