RELATION BETWEEN THE SPECIAL RADAR ECHO FROM WITHIN THE ICE SHEET AND THE CONFIGURATION OF THE GROUND (III) : ESTIMATION OF TEMPERATURE PROFILE IN THE ICE SHEET
To measure temperature profiles directly in the huge ice sheet in Antarctica is very difficult. Therefore, we introduce the possibility of estimation of temperature profiles in the ice sheet using the data from two radars for ice which have frequencies 60 and 179MHz. Since a temperature profile was...
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ftnipr:oai:nipr.repo.nii.ac.jp:00003726 2023-05-15T13:49:01+02:00 RELATION BETWEEN THE SPECIAL RADAR ECHO FROM WITHIN THE ICE SHEET AND THE CONFIGURATION OF THE GROUND (III) : ESTIMATION OF TEMPERATURE PROFILE IN THE ICE SHEET ホシヤマ ミツオ ニシツジ アキラ ニシオ フミヒコ ワダ マコト ワタナベ オキツグ Mitsuo HOSHIYAMA Akira NISHITSUJI Fumihiko NISHIO Makoto WADA Okitsugu WATANABE 1992-02 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3726 http://id.nii.ac.jp/1291/00003726/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3726&item_no=1&attribute_id=18&file_no=1 en eng ABSTRACT Research Institute of Applied Electricity, Hokkaido University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3726 http://id.nii.ac.jp/1291/00003726/ AA10756213 Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology, 5, 188(1992-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3726&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1992 ftnipr 2022-12-10T19:45:46Z To measure temperature profiles directly in the huge ice sheet in Antarctica is very difficult. Therefore, we introduce the possibility of estimation of temperature profiles in the ice sheet using the data from two radars for ice which have frequencies 60 and 179MHz. Since a temperature profile was measured directly at Mizuho Station, the temperature profile there was estimated using the data of two radars. It is surmised that in the ice sheet the gradient of temperature with depth is constant and the density of ice is also constant. The calculation was done for depths above 500m depth below surface. From the assumption above the values of temperature gradient with depth and surface temperature can be estimated using the data of two radars which have different frequencies. Comparing the surface temperature from direct measurement with that from estimation using the radar data, the difference was about 5℃. Moreover, the temperature difference at 500m depth between both methods was about 4℃. Hereafter, it is necessary to improve the above assumption and to estimate temperature profiles using data of two radars at other positions. Report Antarc* Antarctica Ice Sheet Polar meteorology and glaciology Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology National Institute of Polar Research Repository, Japan Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Station ENVELOPE(44.317,44.317,-70.683,-70.683) |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
To measure temperature profiles directly in the huge ice sheet in Antarctica is very difficult. Therefore, we introduce the possibility of estimation of temperature profiles in the ice sheet using the data from two radars for ice which have frequencies 60 and 179MHz. Since a temperature profile was measured directly at Mizuho Station, the temperature profile there was estimated using the data of two radars. It is surmised that in the ice sheet the gradient of temperature with depth is constant and the density of ice is also constant. The calculation was done for depths above 500m depth below surface. From the assumption above the values of temperature gradient with depth and surface temperature can be estimated using the data of two radars which have different frequencies. Comparing the surface temperature from direct measurement with that from estimation using the radar data, the difference was about 5℃. Moreover, the temperature difference at 500m depth between both methods was about 4℃. Hereafter, it is necessary to improve the above assumption and to estimate temperature profiles using data of two radars at other positions. |
format |
Report |
author |
ホシヤマ ミツオ ニシツジ アキラ ニシオ フミヒコ ワダ マコト ワタナベ オキツグ Mitsuo HOSHIYAMA Akira NISHITSUJI Fumihiko NISHIO Makoto WADA Okitsugu WATANABE |
spellingShingle |
ホシヤマ ミツオ ニシツジ アキラ ニシオ フミヒコ ワダ マコト ワタナベ オキツグ Mitsuo HOSHIYAMA Akira NISHITSUJI Fumihiko NISHIO Makoto WADA Okitsugu WATANABE RELATION BETWEEN THE SPECIAL RADAR ECHO FROM WITHIN THE ICE SHEET AND THE CONFIGURATION OF THE GROUND (III) : ESTIMATION OF TEMPERATURE PROFILE IN THE ICE SHEET |
author_facet |
ホシヤマ ミツオ ニシツジ アキラ ニシオ フミヒコ ワダ マコト ワタナベ オキツグ Mitsuo HOSHIYAMA Akira NISHITSUJI Fumihiko NISHIO Makoto WADA Okitsugu WATANABE |
author_sort |
ホシヤマ ミツオ |
title |
RELATION BETWEEN THE SPECIAL RADAR ECHO FROM WITHIN THE ICE SHEET AND THE CONFIGURATION OF THE GROUND (III) : ESTIMATION OF TEMPERATURE PROFILE IN THE ICE SHEET |
title_short |
RELATION BETWEEN THE SPECIAL RADAR ECHO FROM WITHIN THE ICE SHEET AND THE CONFIGURATION OF THE GROUND (III) : ESTIMATION OF TEMPERATURE PROFILE IN THE ICE SHEET |
title_full |
RELATION BETWEEN THE SPECIAL RADAR ECHO FROM WITHIN THE ICE SHEET AND THE CONFIGURATION OF THE GROUND (III) : ESTIMATION OF TEMPERATURE PROFILE IN THE ICE SHEET |
title_fullStr |
RELATION BETWEEN THE SPECIAL RADAR ECHO FROM WITHIN THE ICE SHEET AND THE CONFIGURATION OF THE GROUND (III) : ESTIMATION OF TEMPERATURE PROFILE IN THE ICE SHEET |
title_full_unstemmed |
RELATION BETWEEN THE SPECIAL RADAR ECHO FROM WITHIN THE ICE SHEET AND THE CONFIGURATION OF THE GROUND (III) : ESTIMATION OF TEMPERATURE PROFILE IN THE ICE SHEET |
title_sort |
relation between the special radar echo from within the ice sheet and the configuration of the ground (iii) : estimation of temperature profile in the ice sheet |
publisher |
ABSTRACT |
publishDate |
1992 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3726 http://id.nii.ac.jp/1291/00003726/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3726&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(44.317,44.317,-70.683,-70.683) |
geographic |
Mizuho Mizuho Station |
geographic_facet |
Mizuho Mizuho Station |
genre |
Antarc* Antarctica Ice Sheet Polar meteorology and glaciology Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology |
genre_facet |
Antarc* Antarctica Ice Sheet Polar meteorology and glaciology Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3726 http://id.nii.ac.jp/1291/00003726/ AA10756213 Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology, 5, 188(1992-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3726&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250427560493056 |