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A study of nonlinear internal waves ...

Zhao, Zhongxiang.

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A study of nonlinear internal waves in the northeastern South China Sea.

Record Type:	Electronic resources : Monograph/item
Title/Author:	A study of nonlinear internal waves in the northeastern South China Sea./
Author:	Zhao, Zhongxiang.
Description:	181 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6262.
Contained By:	Dissertation Abstracts International65-12B.
Subject:	Physical Oceanography. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3157312
ISBN:	0496897950

A study of nonlinear internal waves in the northeastern South China Sea.
Zhao, Zhongxiang.

A study of nonlinear internal waves in the northeastern South China Sea. - 181 p.

Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6262.

Thesis (Ph.D.)--University of Delaware, 2005.

The generation, propagation, and polarity conversion of nonlinear internal solitary waves (ISWs) in the northeastern South China Sea (SCS) are studied based on satellite images, field measurements and numerical models. One hundred and sixteen ISW packets are observed in remote sensing images acquired from 1995 to 2001. Temperature profiles measured on the South China shelf in the ASIAEX 2001 are also studied.

ISBN: 0496897950Subjects--Topical Terms:

1019163
Physical Oceanography.

A study of nonlinear internal waves in the northeastern South China Sea.
LDR:03158nmm 2200313 4500 001 1840546
005 20050721104658.5
008 130614s2005 eng d
020 $a 0496897950
035 $a (UnM)AAI3157312
035 $a AAI3157312
040 $a UnM $c UnM
100 1 $a Zhao, Zhongxiang. $3 1928876
245 1 2 $a A study of nonlinear internal waves in the northeastern South China Sea.
300 $a 181 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6262.
500 $a Professor in charge: Victor V. Klemas.
502 $a Thesis (Ph.D.)--University of Delaware, 2005.
520 $a The generation, propagation, and polarity conversion of nonlinear internal solitary waves (ISWs) in the northeastern South China Sea (SCS) are studied based on satellite images, field measurements and numerical models. One hundred and sixteen ISW packets are observed in remote sensing images acquired from 1995 to 2001. Temperature profiles measured on the South China shelf in the ASIAEX 2001 are also studied.
520 $a In shallow water internal wave theory, ISWs in stratified oceans can be depression, elevation, and broadening waves, depending on the signs of nonlinearity coefficients. Satellite images can record in the spatial domain a continuous evolution process from depression, via broadening, to elevation ISWs, under conditions of bottom shoaling both in the propagation direction and in the transect direction. The conversion process can be obtained by transferring information from the spatial domain to the temporal domain. Ocean environment parameters can be estimated. The polarity conversion process is simulated using the variable coefficient EKdV equation.
520 $a ISWs in the northeastern SCS can fall into two categories: single-wave ISW packet and multiple-wave ISW packet. That all the 22 single-wave ISW packets occur in the deep water zone reveals their uniqueness. It is suggested that these ISWs originate from nonlinear steepening of internal tides, which are induced by tide topography interaction in the Luzon Strait. An ERS-2 SAR image records such an evolution process from an internal tide to a single ISW.
520 $a The role of tides in the generation of large amplitude ISWs is studied. The 26-day series of temperature profiles and the tide level data from tide stations are used to confirm a phase-locked relationship between internal tide and surface tide. It is found that the ISWs appear on the front faces of internal tide troughs, which correspond to the westward tidal current phases in the tidal current curve. It is also found that it takes ISWs about 62.4 hours to propagate from the Batan Islands to the Dongsha coral reef. These argue for the internal tide mechanism. All the characteristics of the ISWs and internal tides can be explained by examining the westward tidal current variation.
590 $a School code: 0060.
650 4 $a Physical Oceanography. $3 1019163
650 4 $a Remote Sensing. $3 1018559
690 $a 0415
690 $a 0799
710 2 0 $a University of Delaware. $3 1017826
773 0 $t Dissertation Abstracts International $g 65-12B.
790 1 0 $a Klemas, Victor V., $e advisor
790 $a 0060
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3157312