NUMERICAL ANALYSIS OF SEDIMENT TRANSPORT IN MIYAKO BAY, IWATE, JAPAN
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- MURAKAMI Tomokazu
- National Research Institute for Earth Science and Disaster Prevention
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- OGASAWARA Toshinori
- Iwate University
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- SHIMOKAWA Shinya
- National Research Institute for Earth Science and Disaster Prevention
Bibliographic Information
- Other Title
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- 岩手県宮古湾における河川起源の土砂輸送に関する数値解析
- イワテケン ミヤコワン ニ オケル カセン キゲン ノ ドシャ ユソウ ニ カンスル スウチ カイセキ
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Abstract
This study clarified seasonal characteristics of sediment transport originated from Tsugaruishi and Hei rivers and assessed sediment transport changes related to the 2011 Great East Japan Earthquake and tsunami. We conducted numerical analyses of sediment transport originated from Tsugaruishi and Hei rivers in August and November in 2010 and 2011, using ocean and Lagrangian particle tracking models.<br> Results showed that sediments originated from Tsugaruishi River with diameters under 3 μm increased in winter more than in summer, and sediments originated from the Hei River with diameters of 8 and 10 μm were transported broadly in winter. The tsunami altered sediment transport in the bay. Particularly, sediment transport with 8 μm diameter originating from the Hei River was changed greatly by the earthquake.
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) 71 (2), I_1213-I_1218, 2015
Japan Society of Civil Engineers