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2008•土木学会論文集B2(海岸工学)Open access

Prediction of 3-D Beach Changes using BG-Model after Beach Nourishment in Lake Kasumigaura

Takaaki UDA, Yoichi Kogure, Hidenori ZENIYA, Masumi SERIZAWA, Shusuke WATANABE, Toshinori ISHIKAWA

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Abstract

In Lake Kasumigaura, lakeshore vegetations and sandy beach have been devastated in recent years. To recover the sandy beach in Okisu Area in this lake, beach nourishment has been planned with coastal facilities to stabilize the beach, such as groins, detached breakwaters, artificial reefs and artificial headlands. To evaluate the effect of these facilities, BGmodel proposed by Serizawa et al.(2006) was applied for predicting the three dimensional topographic changes after the nourishment. It is concluded that the most appropriate method is to stabilize the beach using a headland.

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In Lake Kasumigaura, lakeshore vegetations and sandy beach have been devastated in recent years. To recover the sandy beach in Okisu Area in this lake, beach nourishment has been planned with coastal facilities to stabilize the beach, such as groins, detached breakwaters, artificial reefs and artificial headlands. To evaluate the effect of these facilities, BGmodel proposed by Serizawa et al.(2006) was applied for predicting the three dimensional topographic changes after the nourishment. It is concluded that the most appropriate method is to stabilize the beach using a headland.

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Available abstract

In Lake Kasumigaura, lakeshore vegetations and sandy beach have been devastated in recent years. To recover the sandy beach in Okisu Area in this lake, beach nourishment has been planned with coastal facilities to stabilize the beach, such as groins, detached breakwaters, artificial reefs and artificial headlands. To evaluate the effect of these facilities, BGmodel proposed by Serizawa et al.(2006) was applied for predicting the three dimensional topographic changes after the nourishment. It is concluded that the most appropriate method is to stabilize the beach using a headland.

Key concepts: Beach nourishment, Headland, Breakwater, Reef, Geology, Coastal erosion, Plage, Oceanography

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