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Abstract ▼ AI-Helper

This research is aimed for investigating the characteristics of seasonal landform changes using estimation of the erosion/retreat rate of sea-cliff based on datum-point in Dundu-ri(West Coast of Korea). In the result, the rate of erosion and retreat was increased in summer, it was considered the e...

This research is aimed for investigating the characteristics of seasonal landform changes using estimation of the erosion/retreat rate of sea-cliff based on datum-point in Dundu-ri(West Coast of Korea). In the result, the rate of erosion and retreat was increased in summer, it was considered the effect of extreme climate events such as rain storm and typhoons, etc. The rate of erosion and retreat was decreased gradually in autumn. But it was increased again in winter. This is the result of vigorous mechanical weathering due to repeated frost action of sea-cliff bed rock. The days of antecedent precipitation and maximum daily wave height are considered the factor affecting the erosion/retreat rate of sea-cliff. In particular, it turned out that the erosion becomes accelerated by strong wave energy during typhoon or storm surges. The erosion/retreat rates of each point during 2 years (June 2010~May 2012), in different condition of topographical and geological characteristics, were about 0.5(D1) to 1.5m (D3), and the annual erosion and retreat rate was 25~75cm/yr. The erosion and retreat process of seacliff is characterized by the fact that the erosion is proceeded by land denudation in addition to marine erosion (wave energy).

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