English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26988/38789
Visitors : 2357832      Online Users : 36
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41533

Title: The year-round upwelling at the shelf break near the northern tip of Taiwan as evidenced by chemical hydrography
Authors: Chong-Kung Wu
Kon-Kee Liu
Gwo-Ching Gong
Saulwood Lin
Chao-Yeuh Yang
Ching-Ling Wei
Su-Cheng Pai
Contributors: 國立臺灣海洋大學:海洋環境化學與生態研究所
Date: 1992-09
Issue Date: 2017-03-01T02:01:03Z
Publisher: Terrestrial, Atmospheric and Oceanic Sciences
Abstract: Abstract: Upwelling of the Kuroshio subsurface water at the shelf break near the northern tip of Taiwan is an important oceanic phenomenon, that results from impingement of the Kuroshio onto the continental shelf and causes profound chemical and biological responses. This upwelling region was frequently observed in the past as a pool of cold water. However, such temperature contrast does not exist throughout the year due to the cooling of the shelf water in winter Consequently, it has never been established until now that the upwelling is a year-round phenomenon. In this study, monthly cruises were conducted from August 1990 to July 1991, and a one year-long monthly record of upwelling was evidenced from the distribution of temperature, nitrate and dissolved oxygen. The last, which revealed the structure of the upwelling dome in winter similar to those in other months, was an especially useful indicator of upwelling when temperature or nitrate concentration failed to show the whole picture of upwelling. Undersaturation of oxygen in the surface water at the upwelling center was observed during December-May. The average downward flux of oxygen in the upwelling area was computed to be 0.034 mol/m^2/day in March 1991. According to a box model for thermal and mass balance, an upwelling speed of about 5 m/day was required to maintain the oxygen-deficiency in the surface layer. The upwelling velocity yielded a total volume transport of 0.2 Sv and nitrate transport of 2x10^9 gN/day to the top 60m in the upwelling area of 2900km^2.
Relation: 3(3)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41533
Appears in Collections:[海洋環境與生態研究所] 期刊論文

Files in This Item:

There are no files associated with this item.



All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback