Solar radiation and stability of the undersurface of sea ice governing ice algal proliferation
海氷の藻類による着色は, 昭和基地周辺で秋と春の2回起こる。中緯度にあるサロマ湖のトエトコでも冬期に着色現象が認められる。昭和基地の秋の着色現象とトエトコの着色現象の起こる環境には共通点があるように思われ, 主要環境条件と考えられる両地方の日射量と海氷下面の安定度とを比較検討した。昭和基地の秋の藻類増加は3月始めから3月末までの間に, トエトコでは1月末から2月末までの間に起こると考えられる。この時期の日射量は1500~2500cal/(cm)^2/10daysで, 両地域に差が認められない。また, 昭和基地では, 10日間の平均気温が-6°から-9℃で, 海氷の成長も溶解もほとんど認められず...
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国立極地研究所
1981
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ftnipr:oai:nipr.repo.nii.ac.jp:00008255 2023-05-15T13:48:58+02:00 Solar radiation and stability of the undersurface of sea ice governing ice algal proliferation Ice Algae ノ ハンショク ヲ シハイ スル ジョウケン トシテ ノ ニッシャ ト カイヒョウカ メン ノ アンテイド 星合 孝男 Takao Hoshiai 1981-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=8255 http://id.nii.ac.jp/1291/00008255/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=8255&item_no=1&attribute_id=18&file_no=1 en eng 国立極地研究所 National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=8255 http://id.nii.ac.jp/1291/00008255/ AN00181831 00857289 南極資料, 73, 23-29(1981-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=8255&item_no=1&attribute_id=18&file_no=1 59(26) Departmental Bulletin Paper P(論文) 1981 ftnipr 2022-11-12T19:49:02Z 海氷の藻類による着色は, 昭和基地周辺で秋と春の2回起こる。中緯度にあるサロマ湖のトエトコでも冬期に着色現象が認められる。昭和基地の秋の着色現象とトエトコの着色現象の起こる環境には共通点があるように思われ, 主要環境条件と考えられる両地方の日射量と海氷下面の安定度とを比較検討した。昭和基地の秋の藻類増加は3月始めから3月末までの間に, トエトコでは1月末から2月末までの間に起こると考えられる。この時期の日射量は1500~2500cal/(cm)^2/10daysで, 両地域に差が認められない。また, 昭和基地では, 10日間の平均気温が-6°から-9℃で, 海氷の成長も溶解もほとんど認められず, 海氷下面は安定していた。トエトコの気温は昭和基地よりやや低めであるが, 昭和基地との差は少なく, 海氷下面は安定していたと考えられる。さらに, 藻類の増殖に直接関与する海氷下端に達する日射量を測定した。透過日射量の雪面日射量に対する割合は, 海表面の雪の多少により, 4~36%と変化した。 The coloration of sea ice by the ice algae occurred in austral autumn and spring at Syowa Station, Antarctica and in winter at Toetoko in Lake Saroma, Japan. The ice algal proliferation at both localities seemed to proceed through a similar process and under common environmental conditions. The solar radiation and the stability of the undersurface of sea ice as principal factors were compared between the two localities, particularly during the proliferation period of ice algae. Ordinarily it seemed that the ice algae proliferated between the beginning of March and the end of March at Syowa and from the end of January to the end of February at Toetoko. The amount of solar radiation supplied during the algal proliferation period ranged from 1500 to 2500 cal/(cm)^2/10 days. No significant difference in the amount of solar radiation was recognized between Syowa and Toetoko. The mean air temperature ranged from -6°to -9℃ at Syowa Station. The sea ice did not grow or melt and its undersurface was stable during the algal proliferation period. At Toetoko, the temperature was between -7°and -8℃ and the stability of the undersurface of sea ice was observed. The amount of solar radiation penetrating through the sea ice was examined at Toetoko. The percentage of penetrated solar radiation to the incident solar radiation varied from 4 to 36% depending upon the surface condition of the sea ice. Report Antarc* Antarctica ice algae Sea ice National Institute of Polar Research Repository, Japan Austral Syowa Station |
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Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
59(26) |
spellingShingle |
59(26) 星合 孝男 Takao Hoshiai Solar radiation and stability of the undersurface of sea ice governing ice algal proliferation |
topic_facet |
59(26) |
description |
海氷の藻類による着色は, 昭和基地周辺で秋と春の2回起こる。中緯度にあるサロマ湖のトエトコでも冬期に着色現象が認められる。昭和基地の秋の着色現象とトエトコの着色現象の起こる環境には共通点があるように思われ, 主要環境条件と考えられる両地方の日射量と海氷下面の安定度とを比較検討した。昭和基地の秋の藻類増加は3月始めから3月末までの間に, トエトコでは1月末から2月末までの間に起こると考えられる。この時期の日射量は1500~2500cal/(cm)^2/10daysで, 両地域に差が認められない。また, 昭和基地では, 10日間の平均気温が-6°から-9℃で, 海氷の成長も溶解もほとんど認められず, 海氷下面は安定していた。トエトコの気温は昭和基地よりやや低めであるが, 昭和基地との差は少なく, 海氷下面は安定していたと考えられる。さらに, 藻類の増殖に直接関与する海氷下端に達する日射量を測定した。透過日射量の雪面日射量に対する割合は, 海表面の雪の多少により, 4~36%と変化した。 The coloration of sea ice by the ice algae occurred in austral autumn and spring at Syowa Station, Antarctica and in winter at Toetoko in Lake Saroma, Japan. The ice algal proliferation at both localities seemed to proceed through a similar process and under common environmental conditions. The solar radiation and the stability of the undersurface of sea ice as principal factors were compared between the two localities, particularly during the proliferation period of ice algae. Ordinarily it seemed that the ice algae proliferated between the beginning of March and the end of March at Syowa and from the end of January to the end of February at Toetoko. The amount of solar radiation supplied during the algal proliferation period ranged from 1500 to 2500 cal/(cm)^2/10 days. No significant difference in the amount of solar radiation was recognized between Syowa and Toetoko. The mean air temperature ranged from -6°to -9℃ at Syowa Station. The sea ice did not grow or melt and its undersurface was stable during the algal proliferation period. At Toetoko, the temperature was between -7°and -8℃ and the stability of the undersurface of sea ice was observed. The amount of solar radiation penetrating through the sea ice was examined at Toetoko. The percentage of penetrated solar radiation to the incident solar radiation varied from 4 to 36% depending upon the surface condition of the sea ice. |
format |
Report |
author |
星合 孝男 Takao Hoshiai |
author_facet |
星合 孝男 Takao Hoshiai |
author_sort |
星合 孝男 |
title |
Solar radiation and stability of the undersurface of sea ice governing ice algal proliferation |
title_short |
Solar radiation and stability of the undersurface of sea ice governing ice algal proliferation |
title_full |
Solar radiation and stability of the undersurface of sea ice governing ice algal proliferation |
title_fullStr |
Solar radiation and stability of the undersurface of sea ice governing ice algal proliferation |
title_full_unstemmed |
Solar radiation and stability of the undersurface of sea ice governing ice algal proliferation |
title_sort |
solar radiation and stability of the undersurface of sea ice governing ice algal proliferation |
publisher |
国立極地研究所 |
publishDate |
1981 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=8255 http://id.nii.ac.jp/1291/00008255/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=8255&item_no=1&attribute_id=18&file_no=1 |
geographic |
Austral Syowa Station |
geographic_facet |
Austral Syowa Station |
genre |
Antarc* Antarctica ice algae Sea ice |
genre_facet |
Antarc* Antarctica ice algae Sea ice |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=8255 http://id.nii.ac.jp/1291/00008255/ AN00181831 00857289 南極資料, 73, 23-29(1981-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=8255&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250132906442752 |