Spatial structure of internal tidal waves generated on weak topographies

doi:10.1016/j.dynatmoce.2009.06.002

IMECH-IR > 环境力学重点实验室(2009-2011)

	Spatial structure of internal tidal waves generated on weak topographies
	Fan P(范平); Singh VP; Fan P
发表期刊	Dynamics of Atmospheres and Oceans
	2010
卷号	49 期号:2-3 页码:188-205
ISSN	0377-0265
摘要	The generation of internal gravity waves by barotropic tidal flow passing over a two-dimensional topography is investigated. Rather than calculating the conversion of tidal energy, this study focuses on delineating the geometric characteristics of the spatial structure of the resulting internal wave fields (i.e., the configurations of the internal beams and their horizontal projections) which have usually been ignored. it is found that the various possible wave types can be demarcated by three characteristic frequencies: the tidal frequency, wo; the buoyancy frequency, N; and the vertical component of the Coriolis vector or earth's rotation.f. When different possibilities arising from the sequence of these frequencies are considered, there occur 12 kinds of wave structures in the full 3D space in contrast to the 5 kinds identified by the 2D theory. The constant wave phase lines may form as ellipses or hyperbolic lines on the horizontal plane, provided the buoyancy frequency is greater or less than the tidal frequency. The effect that stems from the consideration of the basic flow is also found, which not only serves as the reason for the occurrence of higtter harmonics but also increases the wave strength in the direction of basic flow. (C) 2009 Elsevier B.V. All rights reserved.
学科领域	环境流体力学
DOI	10.1016/j.dynatmoce.2009.06.002
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000275233000007
关键词[WOS]	DEEP-OCEAN ; LEE WAVES ; CONVERSION ; TIDES ; MECHANISM ; FLUIDS ; FLOW
WOS研究方向	Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences ; Oceanography
WOS类目	Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences ; Oceanography
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/43585
专题	环境力学重点实验室(2009-2011)
通讯作者	Fan P
推荐引用方式 GB/T 7714	Fan P,Singh VP,Fan P. Spatial structure of internal tidal waves generated on weak topographies[J]. Dynamics of Atmospheres and Oceans,2010,49,2-3,:188-205.
APA	范平,Singh VP,&Fan P.(2010).Spatial structure of internal tidal waves generated on weak topographies.Dynamics of Atmospheres and Oceans,49(2-3),188-205.
MLA	范平,et al."Spatial structure of internal tidal waves generated on weak topographies".Dynamics of Atmospheres and Oceans 49.2-3(2010):188-205.

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