Format

Send to

Choose Destination
Sci Rep. 2018 Mar 9;8(1):4229. doi: 10.1038/s41598-018-22696-w.

A comprehensive sediment dynamics study of a major mud belt system on the inner shelf along an energetic coast.

Author information

1
Department of Oceanography, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC. james@mail.nsysu.edu.tw.
2
Department of Oceanography, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC.
3
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, China.
4
School of Ocean Science and Technology, Zhejiang Ocean University, Zhoushan, Zhejiang, China.
5
Institute of Oceanology, Chinese Academy of Science, Qingdao, China.
6
Taiwan Ocean Research Institute, National Applied Laboratories, Kaohsiung, Taiwan, ROC.
7
State Kay Laboratory of Marine Geology, Tongji University, Shanghai, China.
8
Institute of Oceanography, National Taiwan University, Taipei, Taiwan, ROC.
9
Department of Hydraulic and Ocean Engineering and Institute of Ocean Technology and Marine Affairs, National Cheng-Kung University, Tainan, Taiwan, ROC.
10
Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan, ROC.

Abstract

Globally mud areas on continental shelves are conduits for the dispersal of fluvial-sourced sediment. We address fundamental issues in sediment dynamics focusing on how mud is retained on the seabed on shallow inner shelves and what are the sources of mud. Through a process-based comprehensive study that integrates dynamics, provenance, and sedimentology, here we show that the key mechanism to keep mud on the seabed is the water-column stratification that forms a dynamic barrier in the vertical that restricts the upward mixing of suspended sediment. We studied the 1000 km-long mud belt that extends from the mouth of the Changjiang (Yangtze) River along the coast of Zhejiang and Fujian Provinces of China and ends on the west coast of Taiwan. This mud belt system is dynamically attached to the fluvial sources, of which the Changjiang River is the primary source. Winter is the constructive phase when active deposition takes place of fine-grained sediment carried mainly by the Changjiang plume driven by Zhe-Min Coastal Currents southwestward along the coast.

Supplemental Content

Full text links

Icon for Nature Publishing Group Icon for PubMed Central
Loading ...
Support Center