The effect of a seasonal stratification variation on the load exerted by internal solitary waves on a cylindrical pile

CAI Shuqun; XU Jiexin; CHEN Zhiwu; XIE Jieshuo; DENG Xiaodong; LV Haibin

doi:10.1007/s13131-014-0468-8

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Article Navigation > Acta Oceanologica Sinica > 2014 > 33(7): 21-26

CAI Shuqun, XU Jiexin, CHEN Zhiwu, XIE Jieshuo, DENG Xiaodong, LV Haibin. The effect of a seasonal stratification variation on the load exerted by internal solitary waves on a cylindrical pile[J]. Acta Oceanologica Sinica, 2014, 33(7): 21-26. doi: 10.1007/s13131-014-0468-8

Citation:

CAI Shuqun, XU Jiexin, CHEN Zhiwu, XIE Jieshuo, DENG Xiaodong, LV Haibin. The effect of a seasonal stratification variation on the load exerted by internal solitary waves on a cylindrical pile[J]. Acta Oceanologica Sinica, 2014, 33(7): 21-26. doi: 10.1007/s13131-014-0468-8

Citation:

CAI Shuqun, XU Jiexin, CHEN Zhiwu, XIE Jieshuo, DENG Xiaodong, LV Haibin. The effect of a seasonal stratification variation on the load exerted by internal solitary waves on a cylindrical pile[J]. Acta Oceanologica Sinica, 2014, 33(7): 21-26. doi: 10.1007/s13131-014-0468-8

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The effect of a seasonal stratification variation on the load exerted by internal solitary waves on a cylindrical pile

doi: 10.1007/s13131-014-0468-8

1.
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2.
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2013-09-12
Rev Recd Date: 2013-10-08

Abstract

Abstract

On the basis of Morison's empirical formula and modal separation method in estimating the force and torque exerted by internal solitary waves (ISWs) on a cylindrical pile, it is found that the loads exerted by the ISWs change largely in different seasons at the same site of the continental shelf in the South China Sea (SCS) even under the condition that the amplitudes of ISWs are the same. Thus, the effect of a seasonal water stratification variation on the force and torque exerted by the ISWs is investigated, and a three-parameter stratification model is employed. It is shown that the loads exerted by the ISWs depend largely on the water stratification. The stronger the water stratification, the larger the force and the torque;when the depth where the maximum thermocline appears is deepened, the force decreases but the torque increases;when the width of the thermocline is narrowed, the force increases but the torque decreases. The seasonal variation of the force and the torque exerted by the ISWs in four seasons in the SCS is thus explained.
- internal solitary waves,
- force,
- torque,
- water stratification,
- South China Sea

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References(17)

References

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