Automatic detection of oceanic mesoscale eddies in the South China Sea

Qiong Xia; Hui Shen

doi:10.1007/s00343-015-4354-9

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Automatic detection of oceanic mesoscale eddies in the South China Sea

OriginalPaper | Updated：2023-05-16

- Automatic detection of oceanic mesoscale eddies in the South China Sea
- Automatic detection of oceanic mesoscale eddies in the South China Sea
- 海洋湖沼学报（英文） 2015年33卷第5期页码：1334-1348
- Affiliations：
  
  1. Key laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences
  2. University of Chinese Academy of Sciences
  3. School of Marine Sciences Nanjing University of Information Science and Technology
- Author bio：
- Funds：
  
  Supported by the National High Technology Research and Development Program of China (863 Program) (No. 2013AA09A505), the National Natural Science Foundation of China (No. U1133001), and the NSFC-Shandong Joint Fund for Marine Science Research Centers Grant (No. U1406401)
- DOI：10.1007/s00343-015-4354-9
  中图分类号：
- 网络首发：2015-09-08，
  
  纸质出版：2015
- Accepted：
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Automatic detection of oceanic mesoscale eddies in the South China Sea[J]. 海洋湖沼学报（英文）, 2015,33(5):1334-1348.

Xia, Q., Shen, H. Automatic detection of oceanic mesoscale eddies in the South China Sea., Chin. J. Ocean. Limnol. 33, 1334–1348 (2015). https://doi.org/10.1007/s00343-015-4354-9
Automatic detection of oceanic mesoscale eddies in the South China Sea[J]. 海洋湖沼学报（英文）, 2015,33(5):1334-1348. DOI： 10.1007/s00343-015-4354-9.

Xia, Q., Shen, H. Automatic detection of oceanic mesoscale eddies in the South China Sea., Chin. J. Ocean. Limnol. 33, 1334–1348 (2015). https://doi.org/10.1007/s00343-015-4354-9 DOI：

摘要

Abstract

This study focuses on the spatial and temporal distribution characteristics of mesoscale eddies in the South China Sea (SCS). An automatic eddy detection method

based on the geometry of velocity vectors

was adopted to obtain an eddy dataset from 21 years of satellite altimeter data. Analysis revealed that the number of anticyclonic eddies was nearly equal to cyclonic eddies; in the SCS

cyclonic eddies are generally stronger than anticyclonic eddies and anticyclonic eddies are larger and longer-lived than cyclonic eddies. Anticyclonic eddies tend to survive longer in the spring and summer

while cyclonic eddies have longer lifetimes in the autumn and winter. The characteristics and seasonal variations of eddies in the SCS are strongly related to variations in general ocean circulation

in the homogeneity of surface wind stress

and in the unevenness of bottom topography in the SCS. The spatial and temporal variation of mesoscale eddies in the SCS could

therefore

be an important index for understanding local hydrodynamics and regional climate change.

关键词

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references

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