ON SNOW CRYSTALS OF "DOUBLE GOHEI TWIN" TYPE
Observations of snow crystals of low temperature types were carried out at Alta (69°56'N, 23°16'E) and Kautokeino (69°01'N, 23°03'E), Finnmarksvidda, Norway from December 17,1987 to January 31,1988. As a result, a peculiar shape of snow crystals of low temperature types was obser...
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ftnipr:oai:nipr.repo.nii.ac.jp:00003667 2023-05-15T16:13:50+02:00 ON SNOW CRYSTALS OF "DOUBLE GOHEI TWIN" TYPE キクチ カツヒロ ウエダ ヒロシ Katsuhiro KIKUCHI Hiroshi UYEDA 1991-05 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3667 http://id.nii.ac.jp/1291/00003667/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3667&item_no=1&attribute_id=18&file_no=1 en eng ABSTRACT Department of Geophysics, Faculty of Science, Hokkaido University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3667 http://id.nii.ac.jp/1291/00003667/ AA10756213 Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology, 4, 130(1991-05) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3667&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1991 ftnipr 2022-12-10T19:45:46Z Observations of snow crystals of low temperature types were carried out at Alta (69°56'N, 23°16'E) and Kautokeino (69°01'N, 23°03'E), Finnmarksvidda, Norway from December 17,1987 to January 31,1988. As a result, a peculiar shape of snow crystals of low temperature types was observed at both observation sites on January 1 and 10,1988. The external shape of this crystal closely resembles that of the gohei twin types. However, the crystal grows from a center nucleus to both sides. Therefore, the crystal was named "Double Gohei Twin" types. Considering the growth mechanism of snow crystals of this type, we were reminded of our laboratory experiments carried out about ten years ago. Based on the experiments, it is understood easily that if the airborne ice fragments come in contact with the surface of supercooled cloud droplets, some of the droplets are frozen in a twin type manner. If one of the snow crystals was grown from the frozen droplets under the temperature conditions in which the column types are suitable to grow, the crystal might grow the double gohei twin type, rarely. Report Finnmarksvidda Kautokeino Polar meteorology and glaciology Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology National Institute of Polar Research Repository, Japan Alta Finnmarksvidda ENVELOPE(23.744,23.744,69.113,69.113) Kautokeino ENVELOPE(23.048,23.048,69.003,69.003) Norway |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
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English |
description |
Observations of snow crystals of low temperature types were carried out at Alta (69°56'N, 23°16'E) and Kautokeino (69°01'N, 23°03'E), Finnmarksvidda, Norway from December 17,1987 to January 31,1988. As a result, a peculiar shape of snow crystals of low temperature types was observed at both observation sites on January 1 and 10,1988. The external shape of this crystal closely resembles that of the gohei twin types. However, the crystal grows from a center nucleus to both sides. Therefore, the crystal was named "Double Gohei Twin" types. Considering the growth mechanism of snow crystals of this type, we were reminded of our laboratory experiments carried out about ten years ago. Based on the experiments, it is understood easily that if the airborne ice fragments come in contact with the surface of supercooled cloud droplets, some of the droplets are frozen in a twin type manner. If one of the snow crystals was grown from the frozen droplets under the temperature conditions in which the column types are suitable to grow, the crystal might grow the double gohei twin type, rarely. |
format |
Report |
author |
キクチ カツヒロ ウエダ ヒロシ Katsuhiro KIKUCHI Hiroshi UYEDA |
spellingShingle |
キクチ カツヒロ ウエダ ヒロシ Katsuhiro KIKUCHI Hiroshi UYEDA ON SNOW CRYSTALS OF "DOUBLE GOHEI TWIN" TYPE |
author_facet |
キクチ カツヒロ ウエダ ヒロシ Katsuhiro KIKUCHI Hiroshi UYEDA |
author_sort |
キクチ カツヒロ |
title |
ON SNOW CRYSTALS OF "DOUBLE GOHEI TWIN" TYPE |
title_short |
ON SNOW CRYSTALS OF "DOUBLE GOHEI TWIN" TYPE |
title_full |
ON SNOW CRYSTALS OF "DOUBLE GOHEI TWIN" TYPE |
title_fullStr |
ON SNOW CRYSTALS OF "DOUBLE GOHEI TWIN" TYPE |
title_full_unstemmed |
ON SNOW CRYSTALS OF "DOUBLE GOHEI TWIN" TYPE |
title_sort |
on snow crystals of "double gohei twin" type |
publisher |
ABSTRACT |
publishDate |
1991 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3667 http://id.nii.ac.jp/1291/00003667/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3667&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(23.744,23.744,69.113,69.113) ENVELOPE(23.048,23.048,69.003,69.003) |
geographic |
Alta Finnmarksvidda Kautokeino Norway |
geographic_facet |
Alta Finnmarksvidda Kautokeino Norway |
genre |
Finnmarksvidda Kautokeino Polar meteorology and glaciology Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology |
genre_facet |
Finnmarksvidda Kautokeino 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=3667 http://id.nii.ac.jp/1291/00003667/ AA10756213 Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology, 4, 130(1991-05) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3667&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1765999712064765952 |