동해안과 서해안의 해빈발달 과정 및 구조 비교

Abstract

The Korean Peninsula shows contrasting beach types between the east and west coasts. Toelucidate the beach differences on the geomorphological and hydrodynamical aspects, seismicprofiling and sediment-transport monitoring were performed from a few representative beaches.Seismic data were obtained with Sparker and Chip profiling instruments, whereas continuousmeasurements of hydrodynamic parameters associated with sediment transport were madeusing a benthic tripod. The east coast reveals a coastal sand deposit thinning out offshore inless than 2-3 km of the beach. Offshore of the sand limit occur largely an expansive veneer ofmuds with occasional patches of gravel, underlain by paleo-channel deposits or acousticbasements. In contrast, a thin (a few meter thick) sandy layer takes place consistently from thedeepest part of the Yellow Sea to be connected to beaches on the west coast. from a few representative beaches.Seismic data were obtained with Sparker and Chip profiling instruments, whereas continuousmeasurements of hydrodynamic parameters associated with sediment transport were madeusing a benthic tripod. The east coast reveals a coastal sand deposit thinning out offshore inless than 2-3 km of the beach. Offshore of the sand limit occur largely an expansive veneer ofmuds with occasional patches of gravel, underlain by paleo-channel deposits or acousticbasements. In contrast, a thin (a few meter thick) sandy layer takes place consistently from thedeepest part of the Yellow Sea to be connected to beaches on the west coast.