The force exerted on a cylindrical pile by ocean internal waves derived from nautical X-band radar observations and in-situ buoyancy frequency data

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	The force exerted on a cylindrical pile by ocean internal waves derived from nautical X-band radar observations and in-situ buoyancy frequency data
	Zha, Guozhen 2,3,4; He, Yijun 1,2,3; Yu, Tan 2,3,4; He, Qingyou 5; Shen, Hui 2,3
刊名	OCEAN ENGINEERING
	2012-02-01
卷号	41 页码:13-20
关键词	Internal wave X-band radar Pile Morison's equation Continuous stratified system
ISSN号	0029-8018
通讯作者	He, YJ (reprint author), Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Jiangsu, Peoples R China.
英文摘要	Although large amplitude ocean internal waves (IWs) may induce strong underwater currents and cause a severe threat to offshore drilling platforms, little research attention has been paid to the issue. This paper proposes a method for estimating the force and torque exerted by ocean IWs on a submerged vertical cylindrical pile using nautical X-band radar observations (collected by standard ship equipment) and in-situ buoyancy frequency data. Radar image signatures associated with IWs will be used to infer characteristics of the interior ocean dynamics. The nonlinear velocities of IWs are retrieved based on the use of the Radon Transform technique applied to the radar images. Given the vertical distributions of buoyancy frequency, the amplitudes of IWs are determined based on the Korteweg-de Vries (K-dV) equation for a continuous stratified finite-depth system. With the above parameters, the horizontal velocities induced by IWs and their acceleration can be calculated. Finally, the forces and torques exerted by IWs acting on a pile are estimated using Morison's empirical formula. As an example, the method is applied to data acquired on June 2009 in the northeastern South China Sea. (C) 2011 Elsevier Ltd. All rights reserved.
学科主题	Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
收录类别	SCI
原文出处	10.1016/j.oceaneng.2011.12.014
语种	英语
WOS记录号	WOS:000301035600002
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/12194]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 5.Ocean Univ China, Qingdao 266100, Peoples R China
推荐引用方式 GB/T 7714	Zha, Guozhen,He, Yijun,Yu, Tan,et al. The force exerted on a cylindrical pile by ocean internal waves derived from nautical X-band radar observations and in-situ buoyancy frequency data[J]. OCEAN ENGINEERING,2012,41:13-20.
APA	Zha, Guozhen,He, Yijun,Yu, Tan,He, Qingyou,&Shen, Hui.(2012).The force exerted on a cylindrical pile by ocean internal waves derived from nautical X-band radar observations and in-situ buoyancy frequency data.OCEAN ENGINEERING,41,13-20.
MLA	Zha, Guozhen,et al."The force exerted on a cylindrical pile by ocean internal waves derived from nautical X-band radar observations and in-situ buoyancy frequency data".OCEAN ENGINEERING 41(2012):13-20.