Based on the data of high-resolution seismic profiles, an ancient river channel sys-tem of the last glaciation occurred along the Zhedong and Xihu depression in the southeast of Hupijiao rise. The distribution of the channel fill system shows that the ancient Changjiang River went through the Changjiang depression into the low land plain of the outside continental shelf during the low sea level cycle of the last glaciation. The big channel fill into Okinawa Trough is not found due to the depletion of the river kinetic energy in the low land plain. The river discharge dispersal was of an important role to the dilution of the northern Okinawa Trough sea at that time. Six ancient river channel systems (A―F), which are main distributaries of ancient Changjiang in the East China Sea continental shelf during the last glaciation, may be buried off the modern Changjiang estuary. The distribution of these channels coincides with the zonal elevations in the sea floor.
LI Guangxue1,2, LIU Yong1, YANG Zigeng3, YUE Shuhong4, YANG Wenda5 & HAN Xibin1 1. College of Marine Geo-science, Ocean University of China, Qingdao 266003, China
The rock magnetic properties of surface sediments from the fine-grained depositional area on the outer shelf o...
Jian Liu~(a,b,c,*),Rixiang Zhu~b,Guangxue Li~d a Qingdao Institute of Marine Geology,China Geological Survey,Qingdao 266071,PR China b Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100101,PR China c Research Centre for Coastal Geology,China Geological Survey,Qingdao 266071,PR China d College of Marine Geosciences,Ocean University of Qingdao,Qingdao 266003,PR China
