Using pressure-sensor equipped inverted echo sounder (PIES) to estimate variation in hydrographic field ─ Application to the variability off the east of Taiwan and north east of Luzon / 利用倒置式迴聲儀估算海洋中尺度水文場的變動 ─ 應用於臺灣東部及呂宋東北方海域

碩士 / 國立臺灣大學 / 海洋研究所 / 103 / The influence and fate of westward-propagating eddies that impinge on the Kuroshio were observed with pressure-sensor equipped inverted echo sounders (PIESs) deployed east of Taiwan and northeast of Luzon. Zero-lag correlations observed between PIES-measured acoustic travel times and satellite-measured sea surface height anomalies are negative, consistent with the pycnocline shoaling and deepening beneath sea surface lows and highs, respectively. Correlations have lower magnitude towards the west, suggesting eddy-influence weakens across the Kuroshio. Anticyclones intensify sea surface and pycnocline slopes across the Kuroshio, while cyclones weaken these slopes. During the 6 month period of overlap between the PIES arrays, one anticyclone affected the depth of the pycnocline first at the array northeast of Luzon and 21 days later off Taiwan. Kuroshio response to eddies is complicated due to the variations in eddy strength and shape and due to the simultaneous influences of multiple eddies arriving from different directions.

Identiferoai:union.ndltd.org:TW/103NTU05279041
Date January 2015
CreatorsCheng-Ju Tsai, 蔡承儒
ContributorsSen Jan, 詹森
Source SetsNational Digital Library of Theses and Dissertations in Taiwan
Languagezh-TW
Detected LanguageEnglish
Type學位論文 ; thesis
Format74

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