EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Sedimentary signals of the upwelling along the Zhejiang coast, China

Xin Zhang1,2,3, Jian Liu2,3, and Yoshiki Saito4,5
Xin Zhang et al.
  • 1China University of Geosciences (Wuhan), School of Earth Science, Earth Surface System Science, Wuhan, China (
  • 2Qingdao Institute of Marine Geology, Qingdao, China
  • 3Laboratory for Marine Geology, QIngdao National Laboratory for Marine Science and Technology, Qingdao, China
  • 4Geology Survey of Japan, AIST, Tsukuba, Japan
  • 5Estuary Research Center, Shimane University, Nishikawatsu-cho 1060, Matsue, Japan

The muddy deposits of the Zhe-Min coastal area are of great importance to understand "source to sink" processes. However, the sedimentary processes that dominate along the Zhejiang coast remain controversial. Determining sedimentation rates is an important element of our understanding of sedimentary processes and deposition patterns. Therefore, 23 vibrocores were collected from the muddy area along the Zhejiang coast to analyse their sedimentation rates using 210Pb geochronology. The spatial distribution of the sedimentation rates derived from the 23 vibrocores, as well as previously published data, demonstrated that the middle part of the study area around 29°N experienced relatively high sedimentation rates, which has never been reported in previous studies. This location of high sedimentation rates is approximately consistent with that of the Holocene maximum thickness deposition, finest surface sediments and high concentration of chlorophyll, resulting from the existence of upwelling along the Zhejiang coast besides the fluvial inputs. 

How to cite: Zhang, X., Liu, J., and Saito, Y.: Sedimentary signals of the upwelling along the Zhejiang coast, China, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-2544,, 2020


Display file