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VARIABILITIES OF CURRENTS UNDER FAST ICE IN LUTZOW-HOLM BAY, ANTARCTICA-COMPARISON BETWEEN OBSERVATIONS AND MODEL
https://doi.org/10.15094/00003850
https://doi.org/10.15094/000038503ca7adbd-2f93-47a8-84d2-eea55f9466bb
名前 / ファイル | ライセンス | アクション |
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KJ00000767958 (66.2 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1994-11-01 | |||||
タイトル | ||||||
タイトル | VARIABILITIES OF CURRENTS UNDER FAST ICE IN LUTZOW-HOLM BAY, ANTARCTICA-COMPARISON BETWEEN OBSERVATIONS AND MODEL | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00003850 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
記事種別(英) | ||||||
en | ||||||
ABSTRACT | ||||||
論文名よみ | ||||||
その他のタイトル | VARIABILITIES OF CURRENTS UNDER FAST ICE IN LUTZOW-HOLM BAY, ANTARCTICA-COMPARISON BETWEEN OBSERVATIONS AND MODEL | |||||
著者名よみ |
オオシマ
× オオシマ× カワムラ, トシユキ× タキザワ, タカトシ× ウシオ, シュウキ |
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著者名(英) |
OHSHIMA,Kay,I
× OHSHIMA,Kay,I× KAWAMURA, Toshiyuki× TAKIZAWA, Takatoshi× USHIO, Shuki |
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著者所属(英) | ||||||
en | ||||||
The Institute of Low Temperature Science, Hokkaido University | ||||||
著者所属(英) | ||||||
en | ||||||
The Institute of Low Temperature Science, Hokkaido University | ||||||
著者所属(英) | ||||||
en | ||||||
Japan Marine Science and Technology Center | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | We made current measurements at three sites under fast ice in Lutzow-Holm Bay during 1990-1991. In spite of no direct wind forcing and negligible thermohaline forcing, the current velocity is not small. Especially in Ongul Strait, the velocity typically reaches the order of 0.3 m/s. It is also noted that the direction of the mean current changes drastically from southward to northward in May. The currents at all sites have some correlation with the wind, atmospheric pressure and tide at Syowa Station. We constructed a numerical ocean model to understand the current system under fast ice. We modeled Lutzow-Holm Bay and the continental shelf which extends eastward. The model is barotropic, and the westward wind stress is applied to the ocean. In the case of no fast ice on the east shelf (corresponding to the before-May case), mainly the first mode of shelf wave is excited; while, when the margin of the fast ice is located at the shelf break (corresponding to the after-May case), the second mode of shelf wave is preferentially excited. Correspondingly, the current direction near the coast becomes opposite between these cases, which agrees with the observations in Ongul Strait. These studies suggest that the current variability under fast ice is mostly governed by shelf wave (or coastally trapped waves) generated by the wind stress offshore, and the dominant mode of shelf wave depends strongly on the location of the fast ice margin. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10756213 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 巻 8, p. 193, 発行日 1994-11 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |