碩士 / 國立臺灣海洋大學 / 海洋環境資訊系 / 106 / In this study, three years (2012-2014) satellite altimeter data and AVISO Mesoscale Eddy Trajectory Atlas were used to explore the interaction of Kuroshio and mesoscale eddy east of Taiwan. First, we compare the sea surface velocity derived from satellite altimeter data with that derived from the Doppler Current Profiler (ADCP) to verify the reliability of the current speed. The study area is ranged from 21.5°N to 25.5°N and from 120°E to 124.5°E. The position of the Kuroshio main axis is defined as the longitude where the fastest flow speed at the same latitude and the eastern boundary of the Kuroshio is defined as the longitude where the flow speed is equal to 0.2 m/s at the same latitude. According to the mesoscale eddy trajectory data, a total of 17 mesoscale eddies were found from the east to the west into the Kuroshio. Generally, the cold eddy may weaken the Kuroshio flow velocity, and the warm eddy may increase the Kuroshio flow velocity. However, the data shows that four of them into the Kuroshio for less than 10 days have no effect on the Kuroshio velocity. Further analyze the interaction between the Kuroshio and the eddy, and calculate the relationship between the Kuroshio Kinetic Energy (KKE) and the Eddy Kinetic Energy (EKE) when the eddy impacted the Kuroshio. The results show that the relationship can be divided into three phenomena. First, when the eddy impacted the Kuroshio about one month and then was absorbed by the Kuroshio, KKE is much larger than EKE. Second, when the eddy impacted Kuroshio for 2-3 months before being absorbed, KKE is slightly larger than EKE. Third, when the eddy oscillated at the eastern boundary of the Kuroshio but finally didn’t enter the Kuroshio range, KKE was almost equal to EKE.
| Identifer | oai:union.ndltd.org:TW/106NTOU5276015 |
| Date | January 2018 |
| Creators | Lo, Yuan-Jane, 羅元真 |
| Contributors | Ho, Chung-Ru, 何宗儒 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 53 |
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