Characteristics of Beach Profile Change at a Sandy Coast

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  • 外洋に面した砂浜海岸における海浜断面の変化特性―10年間の測量結果に基づく解析―
  • ガイヨウ ニ メンシタ スナハマ カイガン ニ オケル カイヒン ダンメン ノ ヘンカ トクセイ 10ネンカン ノ ソクリョウ ケッカ ニ モトズク カイセキ

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Abstract

Sandy beach shows gradual topographic change with long-term and short-term variations corresponding to the conditions of waves and tides. Because of the irregularity in the profile change, it is difficult to investigate the characteristics of shoreline change in detail. In this research, long-term survey of the beach profiles has been carried out on three different coasts almost every week for more than ten years. The topographic data were analyzed and the characteristics of the long-term and seasonal beach profile change were discussed using the statistical methods and the empirical orthogonal eigenfunction method (EOF).

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