NUMERICAL SIMULATION OF THREE-DIMENSIONAL SEGMENTATION OF ELONGATED WATER BODY USING BG MODEL

Takaaki Uda, Masumi Serizawa, Shiho Miyahara

Abstract


In a slender water body with a large aspect ratio, the angle between the direction normal to the shoreline and the wave direction exceeds 45°, resulting in the emergence of cuspate forelands and the subdivision of a lake, because wind fetch along the principal axis becomes long. In this study, the BG model (a three-dimensional model for predicting beach changes based on Bagnold’s concept) was applied to this problem. The 3-D subdivision process of a long slender water body was predicted.

Keywords


lakeshore; emergence; shoreline protrusion; BG model; 3-D beach changes; instability; self organization

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