引用本文:	燕杰,侯一筠,刘泽,何源首,胡志顺.利用拉格朗日方法探究黑潮近岸分支流在2019年春季的起源深度.海洋与湖沼,2021,52(5):1137-1144.

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利用拉格朗日方法探究黑潮近岸分支流在2019年春季的起源深度
燕杰^1,2,3, 侯一筠^1,2,3,4, 刘泽^1,3,4, 何源首^1,3, 胡志顺⁵
1.中国科学院海洋研究所海洋环流与波动重点实验室青岛 266071;2.中国科学院大学北京 100049;3.中国科学院海洋大科学中心青岛 266071;4.青岛海洋科学与技术试点国家实验室海洋动力过程与气候功能实验室青岛 266237;5.中国人民解放军92330部队青岛 266100

摘要:

基于ROMS（regional ocean modelling system）模式模拟出2019年春季东海以及临近海域的环流结构和温盐分布。利用拉格朗日方法定量地研究了2019年春季黑潮近岸分支流在台湾以东起源的深度在100-450 m范围内，平均深度约260 m。通过针对台湾海峡流和台湾以东黑潮强度的敏感性实验，进一步得出结论，增大（减小）的台湾以东黑潮流速会减小（增大）黑潮近岸分支流的强度。而增大（减小）的台湾海峡流流速会增大（减小）黑潮近岸分支流的强度。同时，增大（减小）的台湾以东黑潮流会减小（增大）黑潮近岸分支流起源的平均深度。增大（减小）的台湾海峡流流速也会减小（增大）黑潮近岸分支流起源的平均深度。相关结论可为台湾东北黑潮入侵东海变化规律的研究提供参考。

关键词: 黑潮近岸分支流拉格朗日方法起源黑潮台湾海峡流

DOI：10.11693/hyhz20210100018

分类号:P731.21

基金项目:国家自然科学基金，41630967号，41776020号。

附件

THE ORIGINATION DEPTH OF THE NEARSHORE KUROSHIO BRANCH CURRENT IN THE SPRING OF 2019 BASED ON THE LAGRANGIAN METHOD

YAN Jie^1,2,3, HOU Yi-Jun^1,2,3,4, LIU Ze^1,3,4, HE Yuan-Shou^1,3, HU Zhi-Shun⁵

1.CAS Key Laboratory of Ocean Circulation and Waves, Institute of oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2.College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;3.Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China;4.Laboratory for Ocean and Climate Dynamics, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266237, China;5.The Chinese People's Liberation Army 92330 unit, Qingdao 266100, China

Abstract:

Based on the ROMS (regional oceam modeling system) model, the circulation structure and temperature and salt distribution of the East China Sea in the spring of 2019 were simulated. The Lagrangian method was used to study quantitatively the specific origination depth of the nearshore Kuroshio branch current (NKBC) east of Taiwan Island in spring 2019 during which the NKBC flowed at a depth of 100-450 m, on average of about 260 m. By conducting sensitive experiments on the intensities of the Taiwan Strait current and the Kuroshio east of Taiwan, we found that a strong (weak) Kuroshio in east of Taiwan could reduce (increase) the intensity of the NKBC. A strong (weak) Taiwan Strait current could increase (decrease) the intensity of the NKBC. At the same time, a strong (weak) Kuroshio in east of Taiwan could decrease (increase) the average depth of the origination of NKBC; and a strong (weak) Taiwan Strait current could also reduce (increase) the average depth of the origination of NKBC. The findings can provide valuable references for the study of the law of the Kuroshio intrusion into the East China Sea.

Key words: nearshore Kuroshio branch current Lagrangian method origin Kuroshio Taiwan Strait Current