International studies of ice sheet and bedrock
The main Antarctic ice sheet is so vast that large-scale international programmes are necessary for an adequate study of its dynamics, thermodynamics and past history. Radio echo sounding methods are providing reconnaissance mapping of the ice sheet on a continental scale. The soundings also yield s...
Published in: | Philosophical Transactions of the Royal Society of London. B, Biological Sciences |
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Language: | English |
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Online Access: | http://dx.doi.org/10.1098/rstb.1977.0081 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1977.0081 |
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crroyalsociety:10.1098/rstb.1977.0081 2024-10-06T13:43:42+00:00 International studies of ice sheet and bedrock 1977 http://dx.doi.org/10.1098/rstb.1977.0081 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1977.0081 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society of London. B, Biological Sciences volume 279, issue 963, page 185-196 ISSN 0080-4622 2054-0280 journal-article 1977 crroyalsociety https://doi.org/10.1098/rstb.1977.0081 2024-09-09T06:01:27Z The main Antarctic ice sheet is so vast that large-scale international programmes are necessary for an adequate study of its dynamics, thermodynamics and past history. Radio echo sounding methods are providing reconnaissance mapping of the ice sheet on a continental scale. The soundings also yield significant information on the internal deformation of the ice sheet, on the flow of ice shelves and the nature of the bottom surface of the ice. This information is being used to amplify and extrapolate detailed results from other groups who are studying the mass balance, ice movement, and past history by deep drilling; it is also of value in isolating critical sites for future studies. Reconnaissance mapping has now shown the presence of sub-ice lakes larger than those reported in 1973. Studies of radio wave reflexions from internal layers which are believed to be former depositional surfaces, have shown that the conformity between these layers and the bedrock relief decreases as ice movement increases. Statistical analyses of bedrock relief and radio wave reflexion parameters are being used to delimit major geological provinces beneath the ice and investigate the structural and lithological transition between the Transantarctic Mountains and East Antarctica. Such studies have recently indicated the presence and structure of two large intracratonic sedimentary basins in eastern Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves The Royal Society Antarctic East Antarctica Transantarctic Mountains Ice Lakes ENVELOPE(-131.345,-131.345,60.413,60.413) Philosophical Transactions of the Royal Society of London. B, Biological Sciences 279 963 185 196 |
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Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
The main Antarctic ice sheet is so vast that large-scale international programmes are necessary for an adequate study of its dynamics, thermodynamics and past history. Radio echo sounding methods are providing reconnaissance mapping of the ice sheet on a continental scale. The soundings also yield significant information on the internal deformation of the ice sheet, on the flow of ice shelves and the nature of the bottom surface of the ice. This information is being used to amplify and extrapolate detailed results from other groups who are studying the mass balance, ice movement, and past history by deep drilling; it is also of value in isolating critical sites for future studies. Reconnaissance mapping has now shown the presence of sub-ice lakes larger than those reported in 1973. Studies of radio wave reflexions from internal layers which are believed to be former depositional surfaces, have shown that the conformity between these layers and the bedrock relief decreases as ice movement increases. Statistical analyses of bedrock relief and radio wave reflexion parameters are being used to delimit major geological provinces beneath the ice and investigate the structural and lithological transition between the Transantarctic Mountains and East Antarctica. Such studies have recently indicated the presence and structure of two large intracratonic sedimentary basins in eastern Antarctica. |
format |
Article in Journal/Newspaper |
title |
International studies of ice sheet and bedrock |
spellingShingle |
International studies of ice sheet and bedrock |
title_short |
International studies of ice sheet and bedrock |
title_full |
International studies of ice sheet and bedrock |
title_fullStr |
International studies of ice sheet and bedrock |
title_full_unstemmed |
International studies of ice sheet and bedrock |
title_sort |
international studies of ice sheet and bedrock |
publisher |
The Royal Society |
publishDate |
1977 |
url |
http://dx.doi.org/10.1098/rstb.1977.0081 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1977.0081 |
long_lat |
ENVELOPE(-131.345,-131.345,60.413,60.413) |
geographic |
Antarctic East Antarctica Transantarctic Mountains Ice Lakes |
geographic_facet |
Antarctic East Antarctica Transantarctic Mountains Ice Lakes |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves |
op_source |
Philosophical Transactions of the Royal Society of London. B, Biological Sciences volume 279, issue 963, page 185-196 ISSN 0080-4622 2054-0280 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rstb.1977.0081 |
container_title |
Philosophical Transactions of the Royal Society of London. B, Biological Sciences |
container_volume |
279 |
container_issue |
963 |
container_start_page |
185 |
op_container_end_page |
196 |
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1812182233625133056 |