FIELD OBSERVATION AND NUMERICAL SIMULATION OF BEACH AND DUNE SCARPS

Ryuichiro Nishi, Michio Sato, Hsiang Wang

Abstract


Beach and dune scarps are prominent erosional features and probably interfere with post-storm beach profile recovery because of wave reflection on the scarp face during high tide and reduced swash height. As examples, beach and dune scarps, created by typhoon waves on the Pacific Coast and on the East China Sea Coast in Kagoshima Prefecture, were investigated. The highest scarp elevation on these coasts were found to be approximately to 7 m on the Pacific Coast and 10 m on the East China Sea Coast. Following the field observation, a numerical study was conducted to study the generation of scarps.

Keywords


dune; dune scarp; field observation; beach scarp; numerical simulation

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