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Satellite observations and numerical...

Chen, Han-Tsung.

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Satellite observations and numerical simulation of the upwelling induced by the meandering of the Kuroshio current over the continental margin.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Satellite observations and numerical simulation of the upwelling induced by the meandering of the Kuroshio current over the continental margin./
Author:	Chen, Han-Tsung.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 1995,
Description:	138 p.
Notes:	Source: Dissertation Abstracts International, Volume: 56-12, Section: B, page: 6645.
Contained By:	Dissertation Abstracts International56-12B.
Subject:	Physical oceanography. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9610472

Satellite observations and numerical simulation of the upwelling induced by the meandering of the Kuroshio current over the continental margin.
Chen, Han-Tsung.

Satellite observations and numerical simulation of the upwelling induced by the meandering of the Kuroshio current over the continental margin. - Ann Arbor : ProQuest Dissertations & Theses, 1995 - 138 p.

Source: Dissertation Abstracts International, Volume: 56-12, Section: B, page: 6645.

Thesis (Ph.D.)--University of Delaware, 1995.

The objective of this study is to investigate the characteristics of the Kuroshio current over the continental margin in the southern East China Sea using AVHRR images from NOAA satellites and a three-dimensional semi-spectral primitive equation model. In the satellite images, there are significant seasonal variations in the meandering of the Kuroshio and upwelling North of Taiwan. The Kuroshio intrudes onto the continental slope and shelf north of Taiwan in the winter, but it migrates offshore toward the deeper water in the summer. Upwelling is associated with the path of the meandering Kuroshio and is always located at the western side of the Kuroshio. In the numerical simulation, the main axis of the jet water intrudes onto the continental slope during the north monsoon with the steady onshore Ekman drift. Some subsurface water also intrudes onto the continental slope and shelf before rejoining the main stream. In the summer, surface water in the meandering jet migrates offshore under the influence of the south monsoon. The south monsoon induces the steady offshore Ekman drift and also intrusion of subsurface water onto the continental slope and shelf. The numerical simulations suggest that the path of the meandering Kuroshio and Kuroshio surface and subsurface waters north of Taiwan are influenced by both topographic effects and the steady Ekman drift. These intrusion processes induce momentum and mass exchanges in the East China Sea. The numerical simulations suggest that anticyclonic eddies formed in this region tend to propagate with a clockwise migration path. During the 90-day simulation, the eddy travels about 234 km with a mean velocity of about 3.0 cm/s. The anticyclonic eddy decays through its lifetime and loses water during its migration onto the continental slope. Moreover, the anticyclonic eddy propagating over the continental margin induces upwelling and exchanges of momentum and water mass. These results suggest that the topographic effects in the upwelling regions north off Taiwan play a prominent role in meandering Kuroshio and eddies.Subjects--Topical Terms:

3168433
Physical oceanography.

Satellite observations and numerical simulation of the upwelling induced by the meandering of the Kuroshio current over the continental margin.
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008 180830s1995 ||||||||||||||||| ||eng d
035 $a (MiAaPQ)AAI9610472
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040 $a MiAaPQ $c MiAaPQ
100 1 $a Chen, Han-Tsung. $3 3283516
245 1 0 $a Satellite observations and numerical simulation of the upwelling induced by the meandering of the Kuroshio current over the continental margin.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 1995
300 $a 138 p.
500 $a Source: Dissertation Abstracts International, Volume: 56-12, Section: B, page: 6645.
500 $a Professor in charge: Xiao-Hai Yan.
502 $a Thesis (Ph.D.)--University of Delaware, 1995.
520 $a The objective of this study is to investigate the characteristics of the Kuroshio current over the continental margin in the southern East China Sea using AVHRR images from NOAA satellites and a three-dimensional semi-spectral primitive equation model. In the satellite images, there are significant seasonal variations in the meandering of the Kuroshio and upwelling North of Taiwan. The Kuroshio intrudes onto the continental slope and shelf north of Taiwan in the winter, but it migrates offshore toward the deeper water in the summer. Upwelling is associated with the path of the meandering Kuroshio and is always located at the western side of the Kuroshio. In the numerical simulation, the main axis of the jet water intrudes onto the continental slope during the north monsoon with the steady onshore Ekman drift. Some subsurface water also intrudes onto the continental slope and shelf before rejoining the main stream. In the summer, surface water in the meandering jet migrates offshore under the influence of the south monsoon. The south monsoon induces the steady offshore Ekman drift and also intrusion of subsurface water onto the continental slope and shelf. The numerical simulations suggest that the path of the meandering Kuroshio and Kuroshio surface and subsurface waters north of Taiwan are influenced by both topographic effects and the steady Ekman drift. These intrusion processes induce momentum and mass exchanges in the East China Sea. The numerical simulations suggest that anticyclonic eddies formed in this region tend to propagate with a clockwise migration path. During the 90-day simulation, the eddy travels about 234 km with a mean velocity of about 3.0 cm/s. The anticyclonic eddy decays through its lifetime and loses water during its migration onto the continental slope. Moreover, the anticyclonic eddy propagating over the continental margin induces upwelling and exchanges of momentum and water mass. These results suggest that the topographic effects in the upwelling regions north off Taiwan play a prominent role in meandering Kuroshio and eddies.
590 $a School code: 0060.
650 4 $a Physical oceanography. $3 3168433
650 4 $a Hydrologic sciences. $3 3168407
690 $a 0415
690 $a 0388
710 2 $a University of Delaware. $3 1017826
773 0 $t Dissertation Abstracts International $g 56-12B.
790 $a 0060
791 $a Ph.D.
792 $a 1995
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9610472