Weikusat, Ilka; Stoll, Nicolas; Kerch, Johanna; Eichler, Jan; Jansen, Daniela; Kipfstuhl, Sepp (2022): Crystal c-axes (fabric analyser G50) of ice core samples (vertical thin sections) collected from the polar ice core EGRIP, 111-1714 m depth [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.949248
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Published: 2022-09-29 • DOI registered: 2023-02-17
Abstract:
Fabric Analyser data was obtained from 744 vertical thin sections (ca. 6.7 x 9 cm) of the East Greenland Ice Core Project (EGRIP) ice core to analyze the microstructural evolution and internal deformation with depth. Vertical ice thin sections were prepared and measured with the Fabric Analyzer G50 (resolution: 20 μm/pixel) in the field at the EGRIP site in the summer seasons of 2017 and 2018. 55 cm long samples were cut into six thin sections and measurements were later background corrected and processed with the program cAxes. The stated depth (in m) of the section describes the sections' top, center, and bottom. The derived data is the number of grains, mean grain size (in pixel and μm^2), sum vector norm, regelungsgrad, regelungsgrad weighted, concentration parameter, concentration parameter weighted, spherical aperture, spherical aperture weighted, three eigenvalues (e1, e2, e3, and weighted e1, e2, e3), woodcock parameter and woodcock parameter weighted.
Coverage:
Latitude: 75.630000 * Longitude: -35.980000
Minimum DEPTH, ice/snow: 111.15 m * Maximum DEPTH, ice/snow: 1714.30 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Bag number | Bag | Weikusat, Ilka | |||
| 2 | Section | Sect | Weikusat, Ilka | |||
| 3 | Depth, top/min | Depth top | m | Weikusat, Ilka | ||
| 4 | Depth, bottom/max | Depth bot | m | Weikusat, Ilka | ||
| 5 | DEPTH, ice/snow | Depth ice/snow | m | Weikusat, Ilka | Geocode | |
| 6 | Grains | Grains | # | Weikusat, Ilka | Fabric Analyzer G50 (FA) | |
| 7 | Grain size, mean | Grain size mean | pixel | Weikusat, Ilka | Fabric Analyzer G50 (FA) | |
| 8 | Sum vector norm | Sum vector norm | Weikusat, Ilka | Fabric Analyzer G50 (FA) | sum_vector_norm | |
| 9 | Degree of preferred orientation | Pref orient | % | Weikusat, Ilka | Fabric Analyzer G50 (FA) | |
| 10 | Degree of preferred orientation | Pref orient | % | Weikusat, Ilka | Weighed (scale) | |
| 11 | Concentration parameter | Conc param | Weikusat, Ilka | Fabric Analyzer G50 (FA) | ||
| 12 | Concentration parameter | Conc param | Weikusat, Ilka | Weighed (scale) | ||
| 13 | Spherical aperture | Spherical apt | deg | Weikusat, Ilka | Fabric Analyzer G50 (FA) | |
| 14 | Spherical aperture | Spherical apt | deg | Weikusat, Ilka | Weighted (statistic) | |
| 15 | Eigenvalue 1 | EVA1 | Weikusat, Ilka | Fabric Analyzer G50 (FA) | ||
| 16 | Eigenvalue 1 | EVA1 | Weikusat, Ilka | Weighted (statistic) | ||
| 17 | Eigenvalue 2 | EVA2 | Weikusat, Ilka | Fabric Analyzer G50 (FA) | ||
| 18 | Eigenvalue 2 | EVA2 | Weikusat, Ilka | Weighted (statistic) | ||
| 19 | Eigenvalue 3 | EVA3 | Weikusat, Ilka | Fabric Analyzer G50 (FA) | ||
| 20 | Eigenvalue 3 | EVA3 | Weikusat, Ilka | Weighted (statistic) | ||
| 21 | Woodcock shape parameter | Woodcock param | Weikusat, Ilka | Fabric Analyzer G50 (FA) | ||
| 22 | Woodcock shape parameter | Woodcock param | Weikusat, Ilka | Weighed (scale) | ||
| 23 | Grain area, mean | Grain area mean | mm2 | Weikusat, Ilka | Fabric Analyzer G50 (FA) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
16367 data points
Download Data
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