Weikusat, Ilka; Binder, Tobias; Kipfstuhl, Sepp (2020): Structural grain parameters from image analysis of large area scan macroscope images from the NEEM ice core [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.919775
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Abstract:
Grain parameters (size and shape) are derived by extraction and parametrisation of grain boundary networks from large area scan macroscope images from the NEEM ice core. Images have been taken in reflecting light (LASM) in the NEEM camp on the freshly drilled core, prepared as polished thick sections. A dedicated method of automatic image analysis was developed by Tobias Binder (PhD DFG-funded, 2014, AWI, Bremerhaven and IWR, Heidelberg) and applied to the images.
Grain size and shape parameters, if based on reliable statistics viz. several hundreds of grains per section, help to characterise "shape preferred orientation" (SPO) as complementary information to crystal preferred orientation measurements (CPO or fabrics) with respect to the solid state deformation of polar ice.
Related to:
Binder, Tobias (2014): Measurements of grain boundary networks in deep polar ice cores - A digital image processing approach. Heidelberg University Library, Dissertation, https://doi.org/10.11588/heidok.00016891
Binder, Tobias; Garbe, Christoph S; Wagenbach, Dietmar; Freitag, Johannes; Kipfstuhl, Sepp (2013): Extraction and parametrization of grain boundary networks in glacier ice, using a dedicated method of automatic image analysis. Journal of Microscopy, 250(2), 130-141, https://doi.org/10.1111/jmi.12029
Binder, Tobias; Weikusat, Ilka; Freitag, Johannes; Garbe, Christoph S; Wagenbach, Dietmar; Kipfstuhl, Sepp (2013): Microstructure through an Ice Sheet. Materials Science Forum, 753, 481-484, https://doi.org/10.4028/www.scientific.net/MSF.753.481
Kuiper, Ernst-Jan N; de Bresser, Johannes H P; Drury, Martyn R; Eichler, Jan; Pennock, Gillian M; Weikusat, Ilka (2020): Using a composite flow law to model deformation in the NEEM deep ice core, Greenland: Part 2 the role of grain size and premelting on ice deformation at high homologous temperature. The Cryosphere, https://doi.org/10.5194/tc-2018-275
Kuiper, Ernst-Jan N; Weikusat, Ilka; de Bresser, Johannes H P; Jansen, Daniela; Pennock, Gillian M; Drury, Martyn R (2020): Using a composite flow law to model deformation in the NEEM deep ice core, Greenland: Part 1 the role of grain size and grain size distribution on the deformation of Holocene and glacial ice. The Cryosphere, https://doi.org/10.5194/tc-2018-274
Weikusat, Ilka; Kuiper, Ernst-Jan N; de Bresser, Johannes H P; Jansen, Daniela; Pennock, Gillian M; Drury, Martyn R (2020): A composite flow law to model deformation in the NEEM deep ice core, Greenland - The role of grain size, grain size distribution and premelting on ice deformation. PANGAEA, https://doi.org/10.1594/PANGAEA.920005
Other version:
Kipfstuhl, Sepp: Large area scan macroscope images from the NEEM ice core. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.743296
Coverage:
Latitude: 77.450000 * Longitude: -51.060000
Date/Time Start: 2009-05-01T00:00:00 * Date/Time End: 2009-08-20T00:00:00
Minimum DEPTH, ice/snow: 101.84 m * Maximum DEPTH, ice/snow: 2505.71 m
Event(s):
NEEM * Latitude: 77.450000 * Longitude: -51.060000 * Date/Time Start: 2009-05-01T00:00:00 * Date/Time End: 2009-08-20T00:00:00 * Elevation: 2545.0 m * Recovery: 2533.21 m * Location: Greenland * Method/Device: Ice drill (ICEDRILL)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, ice/snow | Depth ice/snow | m | Kipfstuhl, Sepp | Geocode | |
| 2 | Sample ID | Sample ID | Weikusat, Ilka | bag label | ||
| 3 | Subsample ID | Subsample ID | Weikusat, Ilka | section label | ||
| 4 | Comment | Comment | Weikusat, Ilka | |||
| 5 | File name | File name | Weikusat, Ilka | |||
| 6 | File format | File format | Binder, Tobias | |||
| 7 | File size | File size | kByte | Binder, Tobias | ||
| 8 | Uniform resource locator/link to file | URL file | Weikusat, Ilka |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
15499 data points
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