BERM FORMATION AND BERM EROSION

Kazumasa Katoh; Shin-ichi Yanagishima

doi:10.9753/icce.v23.%p

No. 23 (1992), Conference Proceedings

No. 23 (1992)

BERM FORMATION AND BERM EROSION

Conference Proceedings

Published 1992-01-29

Kazumasa Katoh⁺⁻
Shin-ichi Yanagishima⁺⁻

Kazumasa Katoh

Littoral Drift Laboratory, Port and Harbour Res. Inst.

Shin-ichi Yanagishima

Littoral Drift Laboratory, Port and Harbour Res. Inst.

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Keywords

erosion
berm formation
berm erosion

How to Cite

BERM FORMATION AND BERM EROSION. (1992). Coastal Engineering Proceedings, 1(23). https://doi.org/10.9753/icce.v23.%p

Abstract

To investigate the mechanism of beach erosion in a storm, a daily survey of beach profile and the measurement of infragravity waves near the shoreline have been carried out in a field during two and half years. Analyses of these data reveal that the infragravity waves and the level rising of water table play a important role in the berm erosion in a storm. The infragravity waves run up beyond the berm crest to the backshore. The swashed water permeates into the beach, which contributes to a high water table. The permeated water rises to the surface of foreshore, where the beach is eroded by the backwash of infragravity waves.

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BERM FORMATION AND BERM EROSION

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