Radio Echo Sounding: Absorption and Scattering by Water Inclusion and Ice Lenses
Abstract The absorption of radio waves propagating through naturally occurring waters varies greatly with the electrical conductivity. Glacier melt water is very transparent and the attenuation by melt water layers is due to reflexion of power, whereas the attenuation of sea-water layers is due to a...
Published in: | Journal of Glaciology |
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Language: | English |
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Cambridge University Press (CUP)
1972
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Online Access: | http://dx.doi.org/10.1017/s0022143000022541 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022541 |
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crcambridgeupr:10.1017/s0022143000022541 2024-06-23T07:54:14+00:00 Radio Echo Sounding: Absorption and Scattering by Water Inclusion and Ice Lenses Smith, B. M. Ewen Evans, S. 1972 http://dx.doi.org/10.1017/s0022143000022541 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022541 en eng Cambridge University Press (CUP) Journal of Glaciology volume 11, issue 61, page 133-146 ISSN 0022-1430 1727-5652 journal-article 1972 crcambridgeupr https://doi.org/10.1017/s0022143000022541 2024-06-12T04:02:36Z Abstract The absorption of radio waves propagating through naturally occurring waters varies greatly with the electrical conductivity. Glacier melt water is very transparent and the attenuation by melt water layers is due to reflexion of power, whereas the attenuation of sea-water layers is due to absorption. The attenuation of soaked firn is usually prohibitive if the liquid is brine but it should not be a serious obstacle to radio echo strength if the liquid is rain-water or melt water. However, the magnitude of the scattered power can become greater than that from continuous (bedrock) reflectors if the size of the irregularities in the medium is large (approaching the radio wavelength in ice). Echo power formulae show that ice lenses may have the most serious effect and that low radio frequencies will be necessary to combat this. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 11 61 133 146 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract The absorption of radio waves propagating through naturally occurring waters varies greatly with the electrical conductivity. Glacier melt water is very transparent and the attenuation by melt water layers is due to reflexion of power, whereas the attenuation of sea-water layers is due to absorption. The attenuation of soaked firn is usually prohibitive if the liquid is brine but it should not be a serious obstacle to radio echo strength if the liquid is rain-water or melt water. However, the magnitude of the scattered power can become greater than that from continuous (bedrock) reflectors if the size of the irregularities in the medium is large (approaching the radio wavelength in ice). Echo power formulae show that ice lenses may have the most serious effect and that low radio frequencies will be necessary to combat this. |
format |
Article in Journal/Newspaper |
author |
Smith, B. M. Ewen Evans, S. |
spellingShingle |
Smith, B. M. Ewen Evans, S. Radio Echo Sounding: Absorption and Scattering by Water Inclusion and Ice Lenses |
author_facet |
Smith, B. M. Ewen Evans, S. |
author_sort |
Smith, B. M. Ewen |
title |
Radio Echo Sounding: Absorption and Scattering by Water Inclusion and Ice Lenses |
title_short |
Radio Echo Sounding: Absorption and Scattering by Water Inclusion and Ice Lenses |
title_full |
Radio Echo Sounding: Absorption and Scattering by Water Inclusion and Ice Lenses |
title_fullStr |
Radio Echo Sounding: Absorption and Scattering by Water Inclusion and Ice Lenses |
title_full_unstemmed |
Radio Echo Sounding: Absorption and Scattering by Water Inclusion and Ice Lenses |
title_sort |
radio echo sounding: absorption and scattering by water inclusion and ice lenses |
publisher |
Cambridge University Press (CUP) |
publishDate |
1972 |
url |
http://dx.doi.org/10.1017/s0022143000022541 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022541 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 11, issue 61, page 133-146 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000022541 |
container_title |
Journal of Glaciology |
container_volume |
11 |
container_issue |
61 |
container_start_page |
133 |
op_container_end_page |
146 |
_version_ |
1802646321915494400 |