Volume 5 Issue 4
Dec.  2012
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Article Navigation >  Water Science and Engineering  > 2012  >  5(4): 428-439
Jun-cheng ZUO, Min ZHANG, Qing XU, Lin MU, Juan LI, Mei-xiang CHEN. 2012: Seasonal and interannual variabilities of mean velocity of Kuroshio based on satellite data. Water Science and Engineering, 5(4): 428-439. doi: 10.3882/j.issn.1674-2370.2012.04.007
Citation: Jun-cheng ZUO, Min ZHANG, Qing XU, Lin MU, Juan LI, Mei-xiang CHEN. 2012: Seasonal and interannual variabilities of mean velocity of Kuroshio based on satellite data. Water Science and Engineering, 5(4): 428-439. doi: 10.3882/j.issn.1674-2370.2012.04.007
shu

Seasonal and interannual variabilities of mean velocity of Kuroshio based on satellite data

doi: 10.3882/j.issn.1674-2370.2012.04.007
  • 1.

    Key Laboratory of Coastal Disaster and Defence of Ministry of Education, Hohai University, Nanjing 210098, P. R. China                     

  • 2.

    College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, P. R. China

  • 3.

    South China Sea Prediction Center, South China Sea Branch, State Oceanic Administration, Guangzhou 510310, P. R. China

  • 4.

    National Marine Data and Information Service, Tianjin 300171, P. R. China

Funds:  This work was supported by the National Basic Research Program of China (973 Program, Grant No. 2007CB411807), the National Marine Public Welfare Research Project of China (Grants No. 201005019, 201105010-12, and 201105009), and the National Natural Science Foundation of China (Grants No. 40976006 and 41276018-74).
More Information
  • Corresponding author: Min ZHANG
  • Received Date: 2011-05-20
  • Rev Recd Date: 2012-08-28
    Abstract
  • Combining sea level anomalies with the mean dynamic topography derived from the geoid of the EGM08 global gravity field model and the CLS01 mean sea surface height, this study examined the characteristics of global geostrophic surface currents and the seasonal and interannual variabilities of the mean velocity of the Kuroshio (the Kuroshio source and Kuroshio extension). The patterns of global geostrophic surface currents we derived and the actual ocean circulation are basically the same. The mean velocity of the Kuroshio source is high in winter and low in fall, and its seasonal variability accounts for 18% of its total change. The mean velocity of the Kuroshio extension is high in summer and low in winter, and its seasonal variability accounts for 25% of its total change. The interannual variabilities of the mean velocity of the Kuroshio source and Kuroshio extension are significant. The mean velocity of the Kuroshio source and ENSO index are inversely correlated. However, the relationship between the mean velocity of the Kuroshio extension and the ENSO index is not clear. Overall, the velocity of the Kuroshio increases when La Niña occurs and decreases when El Niño occurs.

     

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    • References(14)
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