초록

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이 연구의 목적은 태안반도 신두해안사구의 유효풍속과 지형변화의 관계를 밝히는 것이다. 퇴적물의 유동은 8개의 횡단면에서 침식핀을 이용하여 1999년 7월부터 2000년 7월까지 고도변화를 측정한 후 계산되었다. 연구결과가 시사하는 바는 다음과 같다. 첫째, 사구지역에서의 지형변화와 유효풍속에 근거하여 퇴적기와 침식기가 구분되었다. 퇴적기는 11월부터 4월까지로 모래의 집적이 주로 전사구에서 일어났으며 순차적으로 사구평지로 이어졌다. 침식기는 5월부터 10일까지로 전사구의 말단부에서 소규모 침식과 퇴적이 반복되는 패턴을 보였다. 둘째. 조사기간 동안 조사지역에서의 전체 퇴적물수지는 $10.2\;m^3$/m/yr로 잉여로 나타났으나 지역적인 차이가 나타났다. 이차사구에서는 결핍되는 곳도 나타났다. 사구지역의 북단에서는 모래의 공급이 활발하게 이루어지고 있는 반면 중앙부와 남부지역에서는 모래의 공급이 빈약했다.

Abstract ▼ AI-Helper

This research is aimed to investigate the relationship of the effective wind velocity and the morphological change in coastal dune at Sindu-ri in Korea. Sediment flux was estimated by the measurement of elevation change along eight transects deployed in the study area from July 1999 to July 2000. Th...

This research is aimed to investigate the relationship of the effective wind velocity and the morphological change in coastal dune at Sindu-ri in Korea. Sediment flux was estimated by the measurement of elevation change along eight transects deployed in the study area from July 1999 to July 2000. The results of this study indicated that. first. based on the occurrence of morphological change and winds effective for sand movement. two distinct seasons were identified: a season of deposition and that of erosion. During the depositional season, spanning from November to April, effective winds were dominant and sand accumulation occurred mainly in foredunes and sequentially in dune plains. During the erosional season, from May through October, volume change was small and erosion or sand loss occurred mostly at the dunefoot of foredunes. Secondly, the research revealed that the sediment budget of Sindu coastal dune turned out to be surplus on the whole, but there are some regional differences. Deficit budgets were observed partly in secondary dunes. The utmost northern part of Sindu coastal dune was provided with abundant sand, whereas the central and northern parts were poorly supplied.

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