Kuroshio Variability and its Relationship with Mesoscale Eddies in the southern East China Sea

Title
Kuroshio Variability and its Relationship with Mesoscale Eddies in the southern East China Sea
Author(s)
나한나; 민홍식; 박재훈; 전찬형; Hirohiko Nakamura; Ayako Nishina; Xiao Hua Zhu
Publication Year
2018-12-14
Abstract
Current velocity of the Kuroshio was observed in the southern East China Sea from June 2015 to June 2017. Based on the 2-year in situ observation data, Kuroshio transport was estimated and its temporal variability is examined associated with mesoscale eddy activity over the region. Stronger Kuroshio accompanied by offshore shift of the current axis is related to anticyclonic eddies on the eastern side of the observation line, whereas weaker Kuroshio accompanied by shelf intrusion and onshore shift of the current axis is associated with cyclonic eddies from the east. Temporally extended time series of the Kuroshio transport by using satellite altimetry data for longer than 20 years exhibits spectral peaks on 60-100 days, which is related to mesoscale eddy variability. It turns out westward propagating eddies from the North Pacific to the Ryukyu Island region modify Kuroshio variability depending on their size, strength, location, etc. Spatio-temporal characteristics of the eddies in the western North Pacific are discussed focusing on their relationship with the Kuroshio variability in the East China Sea.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/22825
Bibliographic Citation
AGU 2018 Fall Meeting, pp.1, 2018
Publisher
AGU
Type
Conference
Language
English
Publisher
AGU
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