INVESTIGATION OF SEDIMENT DISCHARGE INTO SUBMARINE CANYON OFFSHORE OF SEISHO COAST
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- UDA Takaaki
- （一財）土木研究センターなぎさ総合研究所 日本大学理工学部海洋建築工学科
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- IGARASHI Tatsuyuki
- （一財）土木研究センター河川・海岸研究部
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- TATEISHI Kengo
- 三洋テクノマリン（株）
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- SHIGEHARA Toshihiro
- 三洋テクノマリン（株）
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- SERIZAWA Masumi
- 海岸研究室（有）
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- MIYAHARA Shiho
- 海岸研究室（有）
Bibliographic Information
- Other Title
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- 西湘海岸から海底谷への土砂流出機構の解析
- セイショウ カイガン カラ カイテイダニ エ ノ ドシャ リュウシュツ キコウ ノ カイセキ
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Description
Owing to the previous studies on bathymetric features around the submarine canyons using the NMB survey data, it was found that three vertical submarine canyons develop near the head at a depth of around 100 m offshore of Seisho PA next to the Morito River mouth. Traces were left on the seabed on a steep slope at the east and west ends of the submarine canyon offshore of the Morito River mouth, from which sand discharges into the deep ocean. The formation of such topographic changes and offshore discharge of sand into a deep ocean have not yet been clarified. In this study, the BG model was used to predict such topographic changes. The possibility of offshore discharge of sand into the deep sea via a submarine canyon was shown by the numerical simulation.
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) 73 (2), I_745-I_750, 2017
Japan Society of Civil Engineers