The impact of Kuroshio water on the source water of the southeastern Taiwan Strait： numerical results

• Published in: Acta oceanologica Sinica Vol. 34; no. 9; pp. 23 - 34
• Main Authors: Zhang, Wenzhou, Zhuang, Xuefen, Chen, Chentung Arthur, Huang, Tinghsuan
• Format: Journal Article
• Language: English
• Published: Beijing The Chinese Society of Oceanography 01.09.2015; Springer Nature B.V; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China%Department of 0ceanography, National Sun Yat-sen University, Kaohsiung 80424, China
• Subjects: Climatology; Coasts; Correlation coefficient; Correlation coefficients; Earth and Environmental Science; Earth Sciences; Ecology; El Nino; El Nino phenomena; Engineering Fluid Dynamics; Environmental Chemistry; La Nina; Lag time; Marine; Marine & Freshwater Sciences; Oceanography; Seawater; Straits; Summer; Three dimensional models; Wind; Wind stress; Winter; 东南部; 厄尔尼诺事件; 台湾海峡; 年际时间尺度; 数值结果; 水源水; 生物地球化学模型; 黑潮水; South China Sea; Taiwan Strait; China; Taiwan; ISEW, Pacific, Taiwan Strait; INW, Pacific, Kuroshio Water; ISEW, South China Sea; INW, Pacific, Kuroshio Current; seasonal variation; Kuroshio water; Taiwan Strait; interannual variation
• ISSN: 0253-505X; 1869-1099
• DOI: 10.1007/s13131-015-0720-x

Model output from a Pacific basin-wide three-dimensional physical-biogeochemical model during the period of 1991 to 2008 was used to investigate the impact of Kuroshio water on the source water of the southeastern Taiwan Strait. Based on the characteristic salinities of both Kuroshio water and the South China Sea water, a Kuroshio impact index （KII） was designed to measure the degree of impact. The KII correlates significantly with the northeast-southwest component of wind stress, but the former lags the latter by approximately two months. The correlation coefficient between them increases from 0.267 4 to 0.852 9, with a lag time increasing from 0 to 63 days. The impact of Kuroshio Water is greater in winter and spring than in summer and autumn. At the interannual time scale, E1 Nifio and La Nifia events play an important role in impacting the KII. During E1 Nifio events, more Kuroshio water contributes to the source water of the southeastern Taiwan Strait. Conversely, during La Nifia events, less Kuroshio water contributes to the source water.