Refraction correction for radio-echo sounding of large ice masses
Abstract This paper presents a simple mathematical formula for correcting radio-echo-sounding data from an ice sheet or glacier for the effects of varying refractive index. The method requires some knowledge of the variation of refractive index with depth. In rare cases this may be known from direct...
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Language: | English |
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Cambridge University Press (CUP)
1992
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Online Access: | http://dx.doi.org/10.1017/s0022143000003713 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000003713 |
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crcambridgeupr:10.1017/s0022143000003713 2024-03-03T08:45:24+00:00 Refraction correction for radio-echo sounding of large ice masses Rees, W. G. Donovan, R.E. 1992 http://dx.doi.org/10.1017/s0022143000003713 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000003713 en eng Cambridge University Press (CUP) Journal of Glaciology volume 38, issue 129, page 302-308 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1992 crcambridgeupr https://doi.org/10.1017/s0022143000003713 2024-02-08T08:36:10Z Abstract This paper presents a simple mathematical formula for correcting radio-echo-sounding data from an ice sheet or glacier for the effects of varying refractive index. The method requires some knowledge of the variation of refractive index with depth. In rare cases this may be known from direct measurement, but it can be estimated from the density profile. If even this is unknown, we show that the corrections can be estimated to an accuracy of about 3% of the depth to bubble close-off (i.e. to about ±12 m for dry-snow conditions), and that the size of the refraction correction for a glacier or ice sheet with a flat bed is typically 6–10 m under these conditions. Article in Journal/Newspaper Ice Sheet Journal of Glaciology Cambridge University Press Journal of Glaciology 38 129 302 308 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Rees, W. G. Donovan, R.E. Refraction correction for radio-echo sounding of large ice masses |
topic_facet |
Earth-Surface Processes |
description |
Abstract This paper presents a simple mathematical formula for correcting radio-echo-sounding data from an ice sheet or glacier for the effects of varying refractive index. The method requires some knowledge of the variation of refractive index with depth. In rare cases this may be known from direct measurement, but it can be estimated from the density profile. If even this is unknown, we show that the corrections can be estimated to an accuracy of about 3% of the depth to bubble close-off (i.e. to about ±12 m for dry-snow conditions), and that the size of the refraction correction for a glacier or ice sheet with a flat bed is typically 6–10 m under these conditions. |
format |
Article in Journal/Newspaper |
author |
Rees, W. G. Donovan, R.E. |
author_facet |
Rees, W. G. Donovan, R.E. |
author_sort |
Rees, W. G. |
title |
Refraction correction for radio-echo sounding of large ice masses |
title_short |
Refraction correction for radio-echo sounding of large ice masses |
title_full |
Refraction correction for radio-echo sounding of large ice masses |
title_fullStr |
Refraction correction for radio-echo sounding of large ice masses |
title_full_unstemmed |
Refraction correction for radio-echo sounding of large ice masses |
title_sort |
refraction correction for radio-echo sounding of large ice masses |
publisher |
Cambridge University Press (CUP) |
publishDate |
1992 |
url |
http://dx.doi.org/10.1017/s0022143000003713 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000003713 |
genre |
Ice Sheet Journal of Glaciology |
genre_facet |
Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology volume 38, issue 129, page 302-308 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000003713 |
container_title |
Journal of Glaciology |
container_volume |
38 |
container_issue |
129 |
container_start_page |
302 |
op_container_end_page |
308 |
_version_ |
1792500956915564544 |