Cross-shelf transport induced by coastal trapped waves along the coast of East China Sea

蒋琳; 董昌明; 尹丽萍

doi:10.1007/s00343-018-7008-x

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Cross-shelf transport induced by coastal trapped waves along the coast of East China Sea

Physics | Updated：2023-05-19

- Cross-shelf transport induced by coastal trapped waves along the coast of East China Sea
- Cross-shelf transport induced by coastal trapped waves along the coast of East China Sea
- 海洋湖沼学报（英文） 2018年36卷第3期页码：630-640
- Affiliations：
  
  1.School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China
  2.Oceanic Modeling and Observation Laboratory, Nanjing University of Information Science and Technology, Nanjing 210044, China
  3.Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, 90095, USA
  4.First Institute of Oceanography, State Oceanic Administration, Qingdao 266001, China
  5.Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Author bio：
  
  DONG Changming, cmdong@nuist.edu.cn
- Funds：
  
  the National Natural Science Foundation of China(41476022);the National Natural Science Foundation of China(41506044);the International Cooperation Project of Indo-Pacific Ocean Environment Variation and Air-Sea Interaction(GASI-IPOVAI-05);the Startup Foundation for Introducing Talent of Nanjing University of Information Science and Technology(2013r121);the Startup Foundation for Introducing Talent of Nanjing University of Information Science & Technology(2014r072)
- DOI：10.1007/s00343-018-7008-x
  中图分类号：
- 收稿：2017-01-05，
  
  录用：2017-2-14，
  
  网络首发：2017-04-06，
  
  纸质出版：2018-05
- Accepted：
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蒋琳, 董昌明, 尹丽萍. Cross-shelf transport induced by coastal trapped waves along the coast of East China Sea[J]. 海洋湖沼学报（英文）, 2018,36(3):630-640.

Lin JIANG, Changming DONG, Liping YIN. Cross-shelf transport induced by coastal trapped waves along the coast of East China Sea[J]. Chinese Journal of Oceanology and Limnology, 2018, 36(3): 630-640.
蒋琳, 董昌明, 尹丽萍. Cross-shelf transport induced by coastal trapped waves along the coast of East China Sea[J]. 海洋湖沼学报（英文）, 2018,36(3):630-640. DOI： 10.1007/s00343-018-7008-x.

Lin JIANG, Changming DONG, Liping YIN. Cross-shelf transport induced by coastal trapped waves along the coast of East China Sea[J]. Chinese Journal of Oceanology and Limnology, 2018, 36(3): 630-640. DOI： 10.1007/s00343-018-7008-x.

摘要

Abstract

Cross-shelf transport is important due to its role in the transport of nutrients

larvae

sediments

and pollutants. The role of coastal trapped waves (CTWs) and their contribution to the cross-shelf transport is presently unknown. The impact of wind-driven CTWs on the structure of the cross-shelf currents and transport is investigated in the East China Sea (ECS) starting from theory. The cross-shelf currents are divided into four terms:the geostrophic balance (GB) term

the second-order wave (SOW) term

the bottom friction (BF) term and Ekman (EK) term

as well as three modes:the Kelvin wave (KW) mode

the first shelf wave (SW1) mode and the second shelf wave (SW2) mode. Comparison among these decompositions shows that (1) for the four terms

the effect of the GB and EK terms is continual

while that of the BF term is confined to 60-240 km offshore

and the contribution of the SOW term can be ignored; (2) for the three modes

the KW and SW1 modes are dominant in cross-shelf transport. The results show that the total cross-shelf transport travels onshore under idealized wind stress on the order of 10

-1

and it increases along the cross-shelf direction and peaks about -0.73 Sv at the continental shelf margin. With the increase of linear bottom friction coefficient

the cross-shelf transport declines with distance with the slope becoming more uniform.

关键词

Keywords

references

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