Cyclone-driven deep sea injection of freshwater and heat by hyperpycnal flow in the subtropics

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	Cyclone-driven deep sea injection of freshwater and heat by hyperpycnal flow in the subtropics
	Kao, SJ ; Dai, M ; Selvaraj, K ; Zhai, W ; Cai, P ; Chen, SN ; Yang, JYT ; Liu, JT ; Liu, CC ; Syvitski, JPM ; Dai MH(戴民汉)
刊名	http://dx.doi.org/10.1029/2010GL044893
	2010-11-04
关键词	SMALL MOUNTAINOUS RIVERS TURBIDITY CURRENTS SEDIMENT DISCHARGE TROPICAL CYCLONES CONTINENTAL SHELVES FLUVIAL SEDIMENT OCEAN TAIWAN TRANSPORT IMPACT
英文摘要	China (973 Program) [2009CB421200]; Program of Introducing Talents of Discipline to Universities [B07034]; Academia Sinica Thematic Program AFOBi, Taiwan [NSC 98-2116-M-001-005]; The western tropical Pacific gives birth to 23 tropical cyclones annually, bringing torrential rainfall to mountainous islands across Oceania resulting in a global sediment production hotspot, in which many rivers have great hyperpycnal potential. By using a temperature (T) and salinity (S) profiler, we observed anomalously warm, low salinity turbid water at 3000-3700 m depths in seas similar to 180 km off southwestern Taiwan immediately after Typhoon Morakot in 2009. This 250m-thick bottom-hugging water occupies similar to 2400 km(2), and contains 0.15% freshwater, suggesting a remarkably high fraction (6-10%) of event rainfall from southwestern Taiwan. These characteristics indicate the turbid water originated from shallow coastal waters via hyperpycnal flow. Apparently, sediment produced from the land during tropical cyclones open an "express gate" to convey heat and freshwater vertically to the deep ocean basin subsequently warming the deep water from the bottom up. Citation: Kao, S. J., M. Dai, K. Selvaraj, W. Zhai, P. Cai, S. N. Chen, J. Y. T. Yang, J. T. Liu, C. C. Liu, and J. P. M. Syvitski (2010), Cyclone-driven deep sea injection of freshwater and heat by hyperpycnal flow in the subtropics, Geophys. Res. Lett., 37, L21702, doi: 10.1029/2010GL044893.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60243]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Kao, SJ,Dai, M,Selvaraj, K,et al. Cyclone-driven deep sea injection of freshwater and heat by hyperpycnal flow in the subtropics[J]. http://dx.doi.org/10.1029/2010GL044893,2010.
APA	Kao, SJ.,Dai, M.,Selvaraj, K.,Zhai, W.,Cai, P.,...&戴民汉.(2010).Cyclone-driven deep sea injection of freshwater and heat by hyperpycnal flow in the subtropics.http://dx.doi.org/10.1029/2010GL044893.
MLA	Kao, SJ,et al."Cyclone-driven deep sea injection of freshwater and heat by hyperpycnal flow in the subtropics".http://dx.doi.org/10.1029/2010GL044893 (2010).