Preliminary Study on the Structure of the Atmospheric Surface Layer in Mizuho Plateau, East Antarctica (Special Issue of the Proceedings of the First Symposium on Antarctic Meteorology and Glaciology)
A preliminary study on the structure of the atmospherlc surface layer in Mlzuho Plateau, East Antarctica was made based on the profiles and fluctuations of wind and air temperature observed at Mizuho Station during the period from June to December 1972 The results are summarized as follows : 1) High...
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National Institute of Polar Research
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ftdoajarticles:oai:doaj.org/article:d2a8024aeaac4b1c85f7315487d0af50 2023-05-15T13:43:21+02:00 Preliminary Study on the Structure of the Atmospheric Surface Layer in Mizuho Plateau, East Antarctica (Special Issue of the Proceedings of the First Symposium on Antarctic Meteorology and Glaciology) Hiroshi SASAKI 1979-10-01T00:00:00Z https://doi.org/10.15094/00008097 https://doaj.org/article/d2a8024aeaac4b1c85f7315487d0af50 EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00008097 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008097 0085-7289 2432-079X https://doaj.org/article/d2a8024aeaac4b1c85f7315487d0af50 Antarctic Record, Iss 67, Pp 86-100 (1979) Geography (General) G1-922 article 1979 ftdoajarticles https://doi.org/10.15094/00008097 2022-12-31T08:12:56Z A preliminary study on the structure of the atmospherlc surface layer in Mlzuho Plateau, East Antarctica was made based on the profiles and fluctuations of wind and air temperature observed at Mizuho Station during the period from June to December 1972 The results are summarized as follows : 1) High frequency of slightly stable conditions and low frequency of unstable conditions were a characteristic feature of stability in the atmospheric surface layer in Mizuho Plateau during the period described above 2) Mean value of roughness length was 0.24 cm and larger by one order than the values at Syowa Station and the South Pole. This may be explained by the presence of high sastrugi produced by erosion of katabatic winds in Mizuho Plateau The profiles of wind speed near the snow surface followed the "log+lmear" law for Richardson numbers less than about 0.1 3)The distributions of the power soectra of wind and temperature fluctuations and those of the cospectra of heat flux were similar to the results reported by many investigators. The cospectral analysis for momentum shows that the momentum with positive sign is transferred within some frequency ranges. It appears that the probability density distributions of the vertical velocity fluctuations in katabatic winds are skew to the region smaller than the mean values 4) Temperature oscillations which seem to be caused by internal wave motions were observed in winter. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica South pole South pole Directory of Open Access Journals: DOAJ Articles Antarctic East Antarctica Syowa Station South Pole Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Station ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Plateau ENVELOPE(40.000,40.000,-73.000,-73.000) Sastrugi ENVELOPE(163.683,163.683,-74.617,-74.617) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Hiroshi SASAKI Preliminary Study on the Structure of the Atmospheric Surface Layer in Mizuho Plateau, East Antarctica (Special Issue of the Proceedings of the First Symposium on Antarctic Meteorology and Glaciology) |
topic_facet |
Geography (General) G1-922 |
description |
A preliminary study on the structure of the atmospherlc surface layer in Mlzuho Plateau, East Antarctica was made based on the profiles and fluctuations of wind and air temperature observed at Mizuho Station during the period from June to December 1972 The results are summarized as follows : 1) High frequency of slightly stable conditions and low frequency of unstable conditions were a characteristic feature of stability in the atmospheric surface layer in Mizuho Plateau during the period described above 2) Mean value of roughness length was 0.24 cm and larger by one order than the values at Syowa Station and the South Pole. This may be explained by the presence of high sastrugi produced by erosion of katabatic winds in Mizuho Plateau The profiles of wind speed near the snow surface followed the "log+lmear" law for Richardson numbers less than about 0.1 3)The distributions of the power soectra of wind and temperature fluctuations and those of the cospectra of heat flux were similar to the results reported by many investigators. The cospectral analysis for momentum shows that the momentum with positive sign is transferred within some frequency ranges. It appears that the probability density distributions of the vertical velocity fluctuations in katabatic winds are skew to the region smaller than the mean values 4) Temperature oscillations which seem to be caused by internal wave motions were observed in winter. |
format |
Article in Journal/Newspaper |
author |
Hiroshi SASAKI |
author_facet |
Hiroshi SASAKI |
author_sort |
Hiroshi SASAKI |
title |
Preliminary Study on the Structure of the Atmospheric Surface Layer in Mizuho Plateau, East Antarctica (Special Issue of the Proceedings of the First Symposium on Antarctic Meteorology and Glaciology) |
title_short |
Preliminary Study on the Structure of the Atmospheric Surface Layer in Mizuho Plateau, East Antarctica (Special Issue of the Proceedings of the First Symposium on Antarctic Meteorology and Glaciology) |
title_full |
Preliminary Study on the Structure of the Atmospheric Surface Layer in Mizuho Plateau, East Antarctica (Special Issue of the Proceedings of the First Symposium on Antarctic Meteorology and Glaciology) |
title_fullStr |
Preliminary Study on the Structure of the Atmospheric Surface Layer in Mizuho Plateau, East Antarctica (Special Issue of the Proceedings of the First Symposium on Antarctic Meteorology and Glaciology) |
title_full_unstemmed |
Preliminary Study on the Structure of the Atmospheric Surface Layer in Mizuho Plateau, East Antarctica (Special Issue of the Proceedings of the First Symposium on Antarctic Meteorology and Glaciology) |
title_sort |
preliminary study on the structure of the atmospheric surface layer in mizuho plateau, east antarctica (special issue of the proceedings of the first symposium on antarctic meteorology and glaciology) |
publisher |
National Institute of Polar Research |
publishDate |
1979 |
url |
https://doi.org/10.15094/00008097 https://doaj.org/article/d2a8024aeaac4b1c85f7315487d0af50 |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(40.000,40.000,-73.000,-73.000) ENVELOPE(163.683,163.683,-74.617,-74.617) |
geographic |
Antarctic East Antarctica Syowa Station South Pole Mizuho Mizuho Station Mizuho Plateau Sastrugi |
geographic_facet |
Antarctic East Antarctica Syowa Station South Pole Mizuho Mizuho Station Mizuho Plateau Sastrugi |
genre |
Antarc* Antarctic Antarctica East Antarctica South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica South pole South pole |
op_source |
Antarctic Record, Iss 67, Pp 86-100 (1979) |
op_relation |
https://doi.org/10.15094/00008097 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008097 0085-7289 2432-079X https://doaj.org/article/d2a8024aeaac4b1c85f7315487d0af50 |
op_doi |
https://doi.org/10.15094/00008097 |
_version_ |
1766187870143381504 |