SEGMENTATION OF WATER BODY GIVEN PROBABILITY OF OCCURRENCE OF WIND DIRECTION BY CIRCULAR OR ELLIPTIC DISTRIBUTION

Proceedings of the International Conference on Coastal Engineering

Shiho Miyahara¹  Masumi Serizawa¹  Takaaki Uda² 

[1] Coastal Engineering Laboratory Co., Ltd.;Public Works Research Center

关键词: cuspate forel;    water body;    wind waves;    segmentation;    BG model;    lakeshore changes;   

DOI  :  10.9753/icce.v35.sediment.6

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

In a slender water body with a large aspect ratio, the angle of wind waves relative to the direction normal to the shoreline may exceed 45°, resulting in the emergence of cuspate forelands and the segmentation of a lake, because the fetch distance along the principal axis becomes large. The BG model was used to predict the segmentation of a rectangular water body by wind waves when the probability of occurrence of wind direction is given by a circular or elliptic distribution. The changes in wave field and sand transport flux over time were calculated to investigate the wave-sheltering effect of the cuspate forelands. A rectangular lake segmented into circular or elliptic lake, when the probability of occurrence of wind direction is given by a circular or elliptic distribution, respectively.

【 授权许可】

CC BY