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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University >
第73巻 第1号 >
奥尻島を想定した楕円島後流域の島陰渦列
| Title: | 奥尻島を想定した楕円島後流域の島陰渦列 |
| Other Titles: | Island-shaded Vortex Sequence formed behind the Elliptical Island, Assuming Okushiri Island |
| Authors: | 藤居, 流1 Browse this author | | 磯田, 豊2 Browse this author →KAKEN DB | | 小林, 直人3 Browse this author →KAKEN DB |
| Authors(alt): | Fujii, Yu1 | | Isoda, Yutaka2 | | Kobayashi, Naoto3 |
| Keywords: | island-shaded vortex | | Okushiri Island | | elliptical island | | reduced gravity model |
| Issue Date: | 4-Aug-2023 |
| Publisher: | 北海道大学大学院水産科学研究院 |
| Journal Title: | 北海道大学水産科学研究彙報 |
| Journal Title(alt): | Bulletin of Fisheries Sciences, Hokkaido University |
| Volume: | 73 |
| Issue: | 1 |
| Start Page: | 15 |
| End Page: | 26 |
| Abstract: | In this study, ADCP observations were carried out on a grid of ship routes with the expectation that the island-shaded vortex would be captured around Okushiri Island in summer. Although such snapshot observation did not reveal the vortex’s generation period, anti-clockwise vortex flows were indeed observed on the eastern side of the island, and a northward migration of its vortex was also inferred. The observed vortex could be easily reproduced by a reduced gravity model with an idealized elliptical island set up in the northward flow. The model experiments have newly shown the occurrence of alternating positive and negative vortices with two-periodicities, i.e., 2.7 days and its double cycle 5.4 days. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/90249 |
| Appears in Collections: | 北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第73巻 第1号
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