• 责任者：Wang Xin (Ludong University ; Institute of Geography and Planning ; Yantai 264025 ; China) ; Shi Xuefa
• 刊名：Earth Science
• 出版年：2013
• 卷期：38(4)
• 页码：p.763-775
• issnNo：ISSN1000-2383
• isbnNo：CN42-1233/P

Based on 210 Pb data of 16 gravity core samples and from the previous study, the spatial pattern of sedimentation rates and its indication to distribution of Yangtze sediment supply in the Yangtze River estuary and its adjacent area were examined. The high accumulation rates were observed at the subaqueous delta off the south branch with the maximum value of 6. 3 cm/a, generally above 3 cm/a. The second highest values distribute on the Hangzhou bay, about 1.7--3.0 cm/a in north and much lower in south （0. 4--1.0 cm/a）. Relative higher sedimentation rates, about 2.58 cm/a, appear in the northwest of study area. The radial sand ridges along the north Jiangsu coastal line, delta-shelf transitional zone and continental shelf were characterized by low sedimentation rates （~1 cm/a）, due to the strong hydrodynamic setting and lack of modern Changjiang material sup- ply. As revealed by this study, a large amount of Yangtze sediment load is deposited around the subaqueous delta and the north Hangzhou Bay. The dispersion of modern Yangtze sediment to East China Sea is constrained to the west of 123~E. The rela- tively high sedimentation rate in north continental area is mainly contributed by sediment eroded from the abandoned Yellowdelta and suspended materials transported by Yellow Sea longshore currents.