EVALUATION OF GRAVEL NOURISHMENT AT AKIYA COAST, KANAGAWA PREFECTURE
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- SHIBAYAMA Tomoya
- Waseda University
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- IZUMI Masatoshi
- Futaba Inc.
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- SATO Akira
- Kanagawa Prefectural Government
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- SAWANO Yasushi
- Kanagawa Prefectural Government
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- HIRAO Atsushi
- Kanagawa Prefectural Government
Bibliographic Information
- Other Title
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- 秋谷海岸礫養浜の経過とその評価
- シュウダニ カイガンレキヨウハマ ノ ケイカ ト ソノ ヒョウカ
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Abstract
Akiya coast is located in Miura peninsula, Kanagawa prefecture and is the first coast that is artificially nourished with gravels over sand beach in Japan. Coastal erosion started in early 1970s due to short supply of sand to the coast after completion of coastal road. The sandy coast was eroded gradually after construction of a breakwater of fishery port in 1980s and was rapidly eroded after 2000. Gravel nourishment started from 2006 after three years discussions in the consensus formation meeting consisted with coastal engineers, local residents, fishermen and members of environmental NGOs in the area. The median diameter of gravels is 15mm and the total amount of nourished gravel is 92,600m3 during six years. Now the coast is stable with gravels distributed in the shoreline. The gravels are continuously transported in longshore direction and additional maintenance works are required after completion of nourishment.
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_769-I_774, 2015
Japan Society of Civil Engineers
