| 季节性层结对孤立内波作用于圆柱载荷的影响 |
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| 作者姓名： | CAI Shuqun XU Jiexin CHEN Zhiwu XIE Jieshuo DENG Xiaodong LV Haibin |
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| 作者单位： | State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;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;State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;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;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;State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China |
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| 基金项目： | The Strategic Priority Research Program of the Chinese Academy of Sciences under contract No. XDA11020201;the National Basic Research Program of China under contract Nos 2011CB013701 and 2013CB956101;the National Natural Science Foundation of China (NSFC) under contract No. 41025019;the Knowledge Innovation Program of the Chinese Academy of Sciences under contract No. SQ201302;LTO Independent Research Program under contract No. LTOZZ1304. |
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| 摘 要： | 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 wa- ter 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 varia- tion of the force and the torque exerted by the ISWs in four seasons in the SCS is thus explained. Key words： internal solitary waves, force, torque, water stratification, South China Sea
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| 关 键 词： | 季节性变化 内弧立波 圆柱形 负荷 桩 中国南海 三参数模型 经验公式 |
| 收稿时间： | 2013/9/12 0:00:00 |
| 修稿时间： | 3/7/2014 12:00:00 AM |
The effect of a seasonal stratification variation on the load exerted by internal solitary waves on a cylindrical pile |
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| 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. |
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| Authors: | CAI Shuqun XU Jiexin CHEN Zhiwu XIE Jieshuo DENG Xiaodong and LV Haibin |
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| Institution: | 1.State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China2.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 |
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| 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. |
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| Keywords: | internal solitary waves force torque water stratification South China Sea |
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