Formation of Surface Snow Layer at Mizuho Station, Antarctica
On the basis of year round observations of surface snow condition in 1977 and snow stake measurements carried out from 1972 to 1978 at Mizuho Station, which is located at 70°42′S, 44°20′E and 2230m a. s. l. in the katabatic wind region, daily, seasonal and secular changes of surface condition and su...
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National Institute of Polar Research
1981
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ftnipr:oai:nipr.repo.nii.ac.jp:00001189 2023-05-15T13:47:59+02:00 Formation of Surface Snow Layer at Mizuho Station, Antarctica Yoshiyuki Fujii 1981-10 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1189 http://id.nii.ac.jp/1291/00001189/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1189&item_no=1&attribute_id=18&file_no=1 en eng National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1189 http://id.nii.ac.jp/1291/00001189/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 19, 280-296(1981-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1189&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1981 ftnipr 2022-11-12T19:42:00Z On the basis of year round observations of surface snow condition in 1977 and snow stake measurements carried out from 1972 to 1978 at Mizuho Station, which is located at 70°42′S, 44°20′E and 2230m a. s. l. in the katabatic wind region, daily, seasonal and secular changes of surface condition and surface layer formation are studied. The surface level changes gradually by sublimation in summer and condensation in winter, and rapidly by deposition and wind erosion of snow. Surface features change much in the intermediate seasons, when low pressure disturbances is active, between summer and winter. The alternative years variation is seen in the mean annual balance of 202 stakes in 1973-1977,being high in 1973,1975 and 1977 and low in 1974 and 1976. Formation of an annual layer occurs once in two or three years on the average. The mean, maximum and minimum annual balance of 202 stakes in 1973-1977 are 1.5-14.8cm, 36.0-52.1cm and -10.4∿-14.9cm, respectively. The absence of annual layer or layers is mainly due to no deposition of snow and to sublimation of a pre-formed annual layer or layers. A model of transmigration of the surface condition is proposed. Report Antarc* Antarctica Memoirs of National Institute of Polar Research Polar Research 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 |
op_collection_id |
ftnipr |
language |
English |
description |
On the basis of year round observations of surface snow condition in 1977 and snow stake measurements carried out from 1972 to 1978 at Mizuho Station, which is located at 70°42′S, 44°20′E and 2230m a. s. l. in the katabatic wind region, daily, seasonal and secular changes of surface condition and surface layer formation are studied. The surface level changes gradually by sublimation in summer and condensation in winter, and rapidly by deposition and wind erosion of snow. Surface features change much in the intermediate seasons, when low pressure disturbances is active, between summer and winter. The alternative years variation is seen in the mean annual balance of 202 stakes in 1973-1977,being high in 1973,1975 and 1977 and low in 1974 and 1976. Formation of an annual layer occurs once in two or three years on the average. The mean, maximum and minimum annual balance of 202 stakes in 1973-1977 are 1.5-14.8cm, 36.0-52.1cm and -10.4∿-14.9cm, respectively. The absence of annual layer or layers is mainly due to no deposition of snow and to sublimation of a pre-formed annual layer or layers. A model of transmigration of the surface condition is proposed. |
format |
Report |
author |
Yoshiyuki Fujii |
spellingShingle |
Yoshiyuki Fujii Formation of Surface Snow Layer at Mizuho Station, Antarctica |
author_facet |
Yoshiyuki Fujii |
author_sort |
Yoshiyuki Fujii |
title |
Formation of Surface Snow Layer at Mizuho Station, Antarctica |
title_short |
Formation of Surface Snow Layer at Mizuho Station, Antarctica |
title_full |
Formation of Surface Snow Layer at Mizuho Station, Antarctica |
title_fullStr |
Formation of Surface Snow Layer at Mizuho Station, Antarctica |
title_full_unstemmed |
Formation of Surface Snow Layer at Mizuho Station, Antarctica |
title_sort |
formation of surface snow layer at mizuho station, antarctica |
publisher |
National Institute of Polar Research |
publishDate |
1981 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1189 http://id.nii.ac.jp/1291/00001189/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1189&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 Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Antarc* Antarctica Memoirs of National Institute of Polar Research Polar Research |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1189 http://id.nii.ac.jp/1291/00001189/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 19, 280-296(1981-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1189&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766248246779314176 |