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1
題名:A NUMERICAL STUDY ON THE SUMMERTIME CIRCULATION AT NORTH OF TAIWAN    
臺灣北部海域夏季流場的數值模擬研究
著者:Ching-Sheng Chern(陳慶生) ;Joe Wang(王冑)
出版地區:台灣
出版城市:台北市
學科:地球科學
刊名:ACTA Oceanographica Taiwanica
卷期:31期(1993.9)
頁碼:44-53
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

在臺灣東北外海,黑潮受到東海大陸坡的阻擋,引發了一些現象,諸如黑潮次表層水的湧升及入侵到東海大陸棚的底部及在大陸坡區形成西南向的反流等。本研究則引用Semtner(1986)所描述的三維斜壓大洋環流模式來探討這些物理過程。模擬海域是由42×52×12個網格所組成,主要的地形則包括了臺灣海峽、東海大陸坡、蘇澳海脊及琉球島弧。 黑潮(流量約為36Sv)沿著臺灣東岸流入模擬海域;臺灣海峽的流量維持在3Sv,海峽水的密度與黑潮表面水相同。黑潮在蘇澳海脊前,便受到地形的影響而轉向,部分黑潮內側的水仍越過海脊向北流,在東海大陸坡處與臺灣海峽流出的水團間生成一微弱的密度鋒面。在東海陸棚底層,則有黑潮的高密度水向陸棚內部侵入,但是侵入的強度則和海峽流量大小有關。在黑潮和大陸坡的碰撞點西邊,在水深225米處,的確有一向西的分支,這些都和實測結果頗為符合。
Recent hydrographic survey at offshore area of northern Taiwan in the summer time indicated that Kuroshio surface water is blocked by the continental shelf of the East China Sea. Some of its subsurface water is upwelled along the shelf break and intrudes onto the midshelf and forms the bottom water there. A three-dimentional, primitive-equation, baroclinic ocean circulation model is used to study this process. Due to the topographic effects associated with the southern end of the Ryukyu islands arc, the main stream of Kuroshio turned seaward in front of the Su-Ao ridge. A portion of the shoreward Kuroshio water still flows northward along the east coast of Taiwan. As this branch current hits the steep shelf break of the East China Sea, part of the incoming water turns westward, formed a counter current along the continental slope there. Meanwhile, some water is upwelled and intrudes into the lower shelf region at northeast of Taiwan. Near the bottom of the shelf area immediately north of Taiwan, the upwelled water formed two density fronts with the adjacent waters. One is located along the slope region, regarded as the Kuroshio front, the other is located on the shelf, separating the lighter water from the Taiwan Strait and the upwelled water. As the transport from Taiwan Strait is weak, the spreading ability of the upwelled water on the shelf will be enhanced.


    

本卷期目次
ACTA Oceanographica Taiwanica 31期 (1993.9)
A PRELIMINARY STUDY ON THE RESPONSE OF SUBTIDAL FLOWS TO THE WINTER MONSOON IN THE VICINITY OF FORMOSA BANKS/ Joe WangChing-Sheng ChernNai-Kuang LiangMing-Yen Shyu
香山養殖牡蠣重金屬含量和生長環境之關係/ 曾鈞懋魏慶琳毛鵬程
實測海水葉綠素a濃度與螢光探針讀值相關性之探討/ 龔國慶楊文榮溫運和
A NUMERICAL STUDY ON THE SUMMERTIME CIRCULATION AT NORTH OF TAIWAN/ Ching-Sheng ChernJoe Wang
STRUCTURAL FRAMEWORK, STRATIGRAPHY AND TECTONICS OF THE PENGHU BASIN OFF SOUTHWESTERN TAIWAN/ Ho-Shing Yu
FATTY ALCOHOLS AND STEROLS IN THE CONTINENTAL MARGIN SEDIMENTS OFF NORTHEASTERN TAIWAN/ Woei-Lih JengBor-Cheng Han
PHYTOPLANKTON DISTRIBUTION IN THE SOUTH CHINA SEA AND KUROSHIO-FLOWING REGION OF TAIWAN/ Rang Huang
MARINE ALGAE OF LAN YU (ORCHID ISLAND), TAIWAN/ Wei-Lung WangYoung-Meng Chiang
 
   
 
   

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