著者
星上 幸良 小林 昭男 宇多 高明 三浦 正寛 熊田 貴之 三波 俊郎
出版者
Japan Society of Civil Engineers
雑誌
海洋開発論文集 (ISSN:09127348)
巻号頁・発行日
vol.19, pp.481-486, 2003 (Released:2011-06-27)
参考文献数
9

Preventive method of beach erosion and accretion triggered by the formation of wave shadow zone associated with extension of port breakwater is investigated through the field observation, taking the Shimohara fishing port in Tateyama City in Chiba Prefecture as the example. This phenomenon is well-known in coastal engineering, but in Japan this kind of beach erosion and accretion have been repeatedly reported. In order to solve this problem, not only the research in engineering method, but also improvement of the environmental assessment system are required so as to include the prediction of topographic changes in the items of environment assessment.
著者
星上 幸良 小林 昭男 宇多 高明 熊田 貴之 酒井 和也 三波 俊郎
出版者
Japan Society of Civil Engineers
雑誌
海洋開発論文集 (ISSN:09127348)
巻号頁・発行日
vol.19, pp.487-492, 2003 (Released:2011-06-27)
参考文献数
4

Relation between beach erosion and the development of coastal forest was investigated by comparing past aerial photographs, taking the Heisa-ura coast in Chiba Prefecture as the example. Sand dune has been well developed at this coast due to the strong wind-blown sand in winter in the past. In order to prevent the damage due to wind-blown sand, coastal forest has been extensively planted. However, excess development of coastal forest in recent years as well as the construction of earth dike along the coastal forest caused shoreline recession by the excavation of beach sand to supply the construction materials. Appropriate land management isrequired between the coastal forest area and the shore protection area in order to avoid devastation of natural sandy beach.