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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57巻 第1/2号 >
富山湾における数日周期の風強制流速変動
| Title: | 富山湾における数日周期の風強制流速変動 |
| Other Titles: | Current Variations with Several-Day Period Caused by Wind in the Toyama Bay |
| Authors: | 相木, 智一1 Browse this author | | 磯田, 豊2 Browse this author →KAKEN DB | | 小善, 圭一3 Browse this author |
| Authors(alt): | Aiki, Tomokazu1 | | Isoda, Yutaka2 | | Syouzen, Keiichi3 |
| Keywords: | Toyama Bay | | current variation | | wind forcing | | internal Kelvin wave | | bottom-trapped shelf wave |
| Issue Date: | Nov-2006 |
| 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: | 57 |
| Issue: | 1-2 |
| Start Page: | 9 |
| End Page: | 18 |
| Abstract: | Two-layer current measurements were carried out at the bay-head over the shelf of the Toyama Bay,from 24 February to 13 March 2002. The upper was set at 100m and lower at 300 m below the sea surface. Current fluctuations caused by wind variation with several-day period are observed. It is found that the phase difference between upper and lower current variations shows about 90 degree. Such fluctuations cannot be explained by a single baroclinic coastal-trapped wave (out of phase) and barotropic one (in phase). So, the generation and propagation of several-day period fluctuations forced by wind were investigated by using the numerical two-layer model. In result, the observed current fluctuations can be reasonably explained by two-type coastal-trapped waves simultaneously excited mainly by north-south wind variations. One is internal Kelvin wave propagated in the upper layer with phase velocity of about 1ms-1 and the other is the bottom-trapped shelf wave slowly propagated with phase velocity of about 0.25 ms-1. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/32481 |
| Appears in Collections: | 北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第57巻 第1/2号
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