POSSIBILITY OF DRIFTING FISHING BOATS MOVING TOWARDS THE RYUKYU ISLANDS FROM THE EMPEROR SEAMOUNTAIN CHAIN AS INDICATED BY DRIFTING BUOY OBSERVATIONS
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- SHIMADA Yoichi
- 水産大学校 海洋生産管理学科
Bibliographic Information
- Other Title
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- 漂流ブイ観測で示された天皇海山列から琉球諸島方面へ移動する漂流漁船の可能性
- ヒョウリュウ ブイ カンソク デ シメサレタ テンノウ ウミヤマレツ カラ リュウキュウ ショトウ ホウメン エ イドウ スル ヒョウリュウ ギョセン ノ カノウセイ
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Abstract
<p> Drifting fishing boats were flown out into the North Pacific Ocean by the tsunami of the Great East Japan Earthquake in March 2011. Some of them have been found around the Ryukyu Islands. In this study, to clarify the moving paths of small fishing boats to the Ryukyu Islands, we investigated the migration path from the Emperor Seamount Chain in the central North Pacific Ocean to the Ryukyu Islands using a drifting buoy that is strongly affected by leeway.The drifting buoy moved southward away from the Corahan Seamount included in the Emperor Seamount Chain and moved westward with large meandering from about 26°N. After that, the drifting buoy moved westward with little meandering from about 167°E and 25°N. Although the movement of drifting buoy was strongly affected by leeway overall, it was strongly affected by seamounts locally. The travel time and final location of the drifting buoy in this study might be applicable to those in the past cases.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 76 (2), I_1177-I_1182, 2020
Japan Society of Civil Engineers
