Dielectric Permittivity of Glacier Ice Measured In Situ by Radar Wide-Angle Reflection
Abstract Values of relative permittivity measured by the wide-angle reflection technique on the Ross ice Shelf show substantial variations between sites, from 3.09 to 2.89, with estimated errors of ±0.03. The largest values, closest to those normally measured in the laboratory, are found nearest to...
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Language: | English |
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Cambridge University Press (CUP)
1978
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Online Access: | http://dx.doi.org/10.1017/s0022143000033505 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033505 |
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crcambridgeupr:10.1017/s0022143000033505 2024-03-03T08:45:21+00:00 Dielectric Permittivity of Glacier Ice Measured In Situ by Radar Wide-Angle Reflection Jezek, Kenneth C. Clough, John W. Bentley, Charles R. Shabtaie, Sion 1978 http://dx.doi.org/10.1017/s0022143000033505 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033505 en eng Cambridge University Press (CUP) Journal of Glaciology volume 21, issue 85, page 315-329 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1978 crcambridgeupr https://doi.org/10.1017/s0022143000033505 2024-02-08T08:37:11Z Abstract Values of relative permittivity measured by the wide-angle reflection technique on the Ross ice Shelf show substantial variations between sites, from 3.09 to 2.89, with estimated errors of ±0.03. The largest values, closest to those normally measured in the laboratory, are found nearest to the grounded ice sheet; values decrease generally in the direction of thinner ice that has been longer on the ice shelf. We believe the variation reflects some real physical phenomenon in the ice shelf, either a true variation in the permittivity of the ice or a complication of the ray-path geometry, but are not able to offer a satisfactory model at present. We hope an explanation will be forthcoming when actual ice core samples from the deep shelf ice are available for examination. Article in Journal/Newspaper ice core Ice Sheet Ice Shelf Journal of Glaciology Ross Ice Shelf Cambridge University Press Ross Ice Shelf Journal of Glaciology 21 85 315 329 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Jezek, Kenneth C. Clough, John W. Bentley, Charles R. Shabtaie, Sion Dielectric Permittivity of Glacier Ice Measured In Situ by Radar Wide-Angle Reflection |
topic_facet |
Earth-Surface Processes |
description |
Abstract Values of relative permittivity measured by the wide-angle reflection technique on the Ross ice Shelf show substantial variations between sites, from 3.09 to 2.89, with estimated errors of ±0.03. The largest values, closest to those normally measured in the laboratory, are found nearest to the grounded ice sheet; values decrease generally in the direction of thinner ice that has been longer on the ice shelf. We believe the variation reflects some real physical phenomenon in the ice shelf, either a true variation in the permittivity of the ice or a complication of the ray-path geometry, but are not able to offer a satisfactory model at present. We hope an explanation will be forthcoming when actual ice core samples from the deep shelf ice are available for examination. |
format |
Article in Journal/Newspaper |
author |
Jezek, Kenneth C. Clough, John W. Bentley, Charles R. Shabtaie, Sion |
author_facet |
Jezek, Kenneth C. Clough, John W. Bentley, Charles R. Shabtaie, Sion |
author_sort |
Jezek, Kenneth C. |
title |
Dielectric Permittivity of Glacier Ice Measured In Situ by Radar Wide-Angle Reflection |
title_short |
Dielectric Permittivity of Glacier Ice Measured In Situ by Radar Wide-Angle Reflection |
title_full |
Dielectric Permittivity of Glacier Ice Measured In Situ by Radar Wide-Angle Reflection |
title_fullStr |
Dielectric Permittivity of Glacier Ice Measured In Situ by Radar Wide-Angle Reflection |
title_full_unstemmed |
Dielectric Permittivity of Glacier Ice Measured In Situ by Radar Wide-Angle Reflection |
title_sort |
dielectric permittivity of glacier ice measured in situ by radar wide-angle reflection |
publisher |
Cambridge University Press (CUP) |
publishDate |
1978 |
url |
http://dx.doi.org/10.1017/s0022143000033505 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033505 |
geographic |
Ross Ice Shelf |
geographic_facet |
Ross Ice Shelf |
genre |
ice core Ice Sheet Ice Shelf Journal of Glaciology Ross Ice Shelf |
genre_facet |
ice core Ice Sheet Ice Shelf Journal of Glaciology Ross Ice Shelf |
op_source |
Journal of Glaciology volume 21, issue 85, page 315-329 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000033505 |
container_title |
Journal of Glaciology |
container_volume |
21 |
container_issue |
85 |
container_start_page |
315 |
op_container_end_page |
329 |
_version_ |
1792500895836012544 |