| Zheng Quanan,Ho Chung-Ru,Xie Lingling,Li Mingming. 2019. A case study of a Kuroshio main path cut-off event and impacts on the South China Sea in fall-winter 2013-2014. Acta Oceanologica Sinica, 38(4):12－19 |
| A case study of a Kuroshio main path cut-off event and impacts on the South China Sea in fall-winter 2013-2014 |
| 2013-2014年秋冬季黑潮主轴断流事件及其对南海的影响 |
| Received:February 09, 2018 |
| DOI：10.1007/s13131-019-1411-9 |
| Key words:KMP cut-off event eddy kinetic energy dynamic criterion South China Sea |
| 中文关键词: 黑潮主轴断流事件 涡动能 动力学判据 南海 |
| 基金项目:The National Natural Science Foundation of China under contract No. 41776034; the Ministry of Science and Technology of Taiwan under contract Nos MOST 105-2611-M-019-001 and MOST 106-2611-M-019-015; the GASI Project under contract Nos GASI-IPOVAI-01-02 and GASI-02-SCS-YGST2-02; the Foundation of Guangdong Province for Outstanding Young Teachers in University under contract No. YQ201588. |
| Author Name | Affiliation | E-mail | | Zheng Quanan | Department of Atmospheric and Oceanic Science, University of Maryland, College Park, Maryland 20742
Guangdong Key Laboratory of Coastal Ocean Variability and Disaster Prediction, Guangdong Ocean University, Zhanjiang 524088 | | | Ho Chung-Ru | Department of Marine Environmental Informatics, National Taiwan Ocean University, Keelung 20224 | | | Xie Lingling | Guangdong Key Laboratory of Coastal Ocean Variability and Disaster Prediction, Guangdong Ocean University, Zhanjiang 524088 | llingxie@163.com | | Li Mingming | Guangdong Key Laboratory of Coastal Ocean Variability and Disaster Prediction, Guangdong Ocean University, Zhanjiang 524088 | |
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| Abstract: |
| This study examines a Kuroshio main path (KMP) cut-off event east of Taiwan Island occurred in fall-winter 2013-2014 and its impacts on the South China Sea (SCS) by analyzing satellite altimetry and mooring observations. Satellite altimeter sea level anomaly (SLA) images reveal a complete process that a huge cyclonic eddy (CE) from the Pacific collided with the Kuroshio and the western boundary from 15 October 2013 to 15 January 2014. Mooring observations evidenced that the Kuroshio upper ocean volume transport was cut off more than 82% from 17×106 m3/s in September to 3×106 m3/s in November 2013. The KMP cut-off event caused the Kuroshio branching and intruding into the SCS and strengthened the eddy kinetic energy in the northern SCS west of the Luzon Strait. Using the total momentum as a dynamic criterion to determine the role of eddy collision with the Kuroshio reasonably explains the KMP cut-off event. |
| 中文摘要: |
| 基于卫星高度计和锚系观测数据分析，研究2013-2014年秋冬季台湾岛东部黑潮主轴断流事件及其对南海的影响。海面高度图像序列显示了2013年10月15日至2014年1月15日期间来自太平洋的一个巨大的反气旋涡撞击黑潮和西边界的全过程。锚系观测证实，黑潮上层水体通量被切断82%，由2013年9月份的17×106 m3/s 降为11月的3×106 m3/s。该断流事件导致黑潮分叉并侵入南海，由此增强了吕宋海峡西侧南海北部的涡动能。以总动量作为涡旋与黑潮相撞作用的动力学判据可以更合理地解释黑潮主轴断流事件。 |
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