Seismic geomorphology of buried channel systems in the western South Huanghai Sea: retrodiction for paleo-environments

摘要

Quantitative morphologic analysis of shallowly buried,dendritic channel systems in the continental shelf off the abandoned Huanghe River (Yellow River) mouth has been made based on interpretation of high resolution seismic profiles,with the attempt to estimate the paleo-hydrologic parameters when the incised-channels formed,then assess the paleoenvironment.The results indicate that the buried channel systems were formed about 44 cal ka BP when the shelf was subaerially exposed and subsequently drowned and filled during the Holocene transgression with the sea level rise continuously.The study area has experienced the processes from fluvial and estuarine to fully marine.