Inferring Ice Fabric From Birefringence Loss in Airborne Radargrams: Application to the Eastern Shear Margin of Thwaites Glacier, West Antarctica ...
Abstract: In airborne radargrams, undulating periodic patterns in amplitude that overprint traditional radiostratigraphic layering are occasionally observed, however, they have yet to be analyzed from a geophysical or glaciological perspective. We present evidence supported by theory that these dept...
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ftdatacite:10.17863/cam.70541 2023-12-03T10:13:25+01:00 Inferring Ice Fabric From Birefringence Loss in Airborne Radargrams: Application to the Eastern Shear Margin of Thwaites Glacier, West Antarctica ... Young, T. J. Schroeder, D. M. Jordan, T. M. Christoffersen, P. Tulaczyk, S. M. Culberg, R. Bienert, N. L. 2021 https://dx.doi.org/10.17863/cam.70541 https://www.repository.cam.ac.uk/handle/1810/323089 unknown Apollo - University of Cambridge Repository BIOGEOSCIENCES Biogeochemical kinetics and reaction modeling Biogeochemical cycles, processes, and modeling CRYOSPHERE Glaciers Ice streams Glaciology Biogeochemistry Snow Ice GLOBAL CHANGE Cryospheric change HYDROLOGY Snow and ice OCEANOGRAPHY BIOLOGICAL AND CHEMICAL PALEOCEANOGRAPHY RADIO SCIENCE Radio wave propagation Research Article Antarctica birefringence fabric glaciology ice penetrating radar polarimetry ScholarlyArticle article-journal Article JournalArticle 2021 ftdatacite https://doi.org/10.17863/cam.70541 2023-11-03T10:27:20Z Abstract: In airborne radargrams, undulating periodic patterns in amplitude that overprint traditional radiostratigraphic layering are occasionally observed, however, they have yet to be analyzed from a geophysical or glaciological perspective. We present evidence supported by theory that these depth‐periodic patterns are consistent with a modulation of the received radar power due to the birefringence of polar ice, and therefore indicate the presence of bulk fabric anisotropy. Here, we investigate the periodic component of birefringence‐induced radar power recorded in airborne radar data at the eastern shear margin of Thwaites Glacier and quantify the lateral variation in azimuthal fabric strength across this margin. We find the depth variability of birefringence periodicity crossing the shear margin to be a visual expression of its shear state and its development, which appears consistent with present‐day ice deformation. The morphology of the birefringent patterns is centered at the location of maximum ... Article in Journal/Newspaper Antarc* Antarctica Thwaites Glacier West Antarctica DataCite Metadata Store (German National Library of Science and Technology) Thwaites Glacier ENVELOPE(-106.750,-106.750,-75.500,-75.500) West Antarctica |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
BIOGEOSCIENCES Biogeochemical kinetics and reaction modeling Biogeochemical cycles, processes, and modeling CRYOSPHERE Glaciers Ice streams Glaciology Biogeochemistry Snow Ice GLOBAL CHANGE Cryospheric change HYDROLOGY Snow and ice OCEANOGRAPHY BIOLOGICAL AND CHEMICAL PALEOCEANOGRAPHY RADIO SCIENCE Radio wave propagation Research Article Antarctica birefringence fabric glaciology ice penetrating radar polarimetry |
spellingShingle |
BIOGEOSCIENCES Biogeochemical kinetics and reaction modeling Biogeochemical cycles, processes, and modeling CRYOSPHERE Glaciers Ice streams Glaciology Biogeochemistry Snow Ice GLOBAL CHANGE Cryospheric change HYDROLOGY Snow and ice OCEANOGRAPHY BIOLOGICAL AND CHEMICAL PALEOCEANOGRAPHY RADIO SCIENCE Radio wave propagation Research Article Antarctica birefringence fabric glaciology ice penetrating radar polarimetry Young, T. J. Schroeder, D. M. Jordan, T. M. Christoffersen, P. Tulaczyk, S. M. Culberg, R. Bienert, N. L. Inferring Ice Fabric From Birefringence Loss in Airborne Radargrams: Application to the Eastern Shear Margin of Thwaites Glacier, West Antarctica ... |
topic_facet |
BIOGEOSCIENCES Biogeochemical kinetics and reaction modeling Biogeochemical cycles, processes, and modeling CRYOSPHERE Glaciers Ice streams Glaciology Biogeochemistry Snow Ice GLOBAL CHANGE Cryospheric change HYDROLOGY Snow and ice OCEANOGRAPHY BIOLOGICAL AND CHEMICAL PALEOCEANOGRAPHY RADIO SCIENCE Radio wave propagation Research Article Antarctica birefringence fabric glaciology ice penetrating radar polarimetry |
description |
Abstract: In airborne radargrams, undulating periodic patterns in amplitude that overprint traditional radiostratigraphic layering are occasionally observed, however, they have yet to be analyzed from a geophysical or glaciological perspective. We present evidence supported by theory that these depth‐periodic patterns are consistent with a modulation of the received radar power due to the birefringence of polar ice, and therefore indicate the presence of bulk fabric anisotropy. Here, we investigate the periodic component of birefringence‐induced radar power recorded in airborne radar data at the eastern shear margin of Thwaites Glacier and quantify the lateral variation in azimuthal fabric strength across this margin. We find the depth variability of birefringence periodicity crossing the shear margin to be a visual expression of its shear state and its development, which appears consistent with present‐day ice deformation. The morphology of the birefringent patterns is centered at the location of maximum ... |
format |
Article in Journal/Newspaper |
author |
Young, T. J. Schroeder, D. M. Jordan, T. M. Christoffersen, P. Tulaczyk, S. M. Culberg, R. Bienert, N. L. |
author_facet |
Young, T. J. Schroeder, D. M. Jordan, T. M. Christoffersen, P. Tulaczyk, S. M. Culberg, R. Bienert, N. L. |
author_sort |
Young, T. J. |
title |
Inferring Ice Fabric From Birefringence Loss in Airborne Radargrams: Application to the Eastern Shear Margin of Thwaites Glacier, West Antarctica ... |
title_short |
Inferring Ice Fabric From Birefringence Loss in Airborne Radargrams: Application to the Eastern Shear Margin of Thwaites Glacier, West Antarctica ... |
title_full |
Inferring Ice Fabric From Birefringence Loss in Airborne Radargrams: Application to the Eastern Shear Margin of Thwaites Glacier, West Antarctica ... |
title_fullStr |
Inferring Ice Fabric From Birefringence Loss in Airborne Radargrams: Application to the Eastern Shear Margin of Thwaites Glacier, West Antarctica ... |
title_full_unstemmed |
Inferring Ice Fabric From Birefringence Loss in Airborne Radargrams: Application to the Eastern Shear Margin of Thwaites Glacier, West Antarctica ... |
title_sort |
inferring ice fabric from birefringence loss in airborne radargrams: application to the eastern shear margin of thwaites glacier, west antarctica ... |
publisher |
Apollo - University of Cambridge Repository |
publishDate |
2021 |
url |
https://dx.doi.org/10.17863/cam.70541 https://www.repository.cam.ac.uk/handle/1810/323089 |
long_lat |
ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
geographic |
Thwaites Glacier West Antarctica |
geographic_facet |
Thwaites Glacier West Antarctica |
genre |
Antarc* Antarctica Thwaites Glacier West Antarctica |
genre_facet |
Antarc* Antarctica Thwaites Glacier West Antarctica |
op_doi |
https://doi.org/10.17863/cam.70541 |
_version_ |
1784260189270048768 |