globalchange  > 气候变化与战略
DOI: 10.5194/hess-24-5043-2020
论文题名:
Dynamic mechanism of an extremely severe saltwater intrusion in the Changjiang estuary in February 2014
作者: Zhu J.; Cheng X.; Li L.; Wu H.; Gu J.; Lyu H.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2020
卷: 24, 期:10
起始页码: 5043
结束页码: 5056
语种: 英语
Scopus关键词: Estuaries ; Reservoirs (water) ; Rivers ; Salt water intrusion ; Water levels ; Changjiang Estuary ; Dynamic mechanism ; Estuarine circulation ; Freshwater inputs ; Qingcaosha reservoirs ; Residual waters ; River discharge ; Water level rise ; Saline water ; estuarine dynamics ; freshwater input ; nearshore dynamics ; river discharge ; safety ; saline intrusion ; water level ; wind field ; wind-driven circulation ; China ; Shanghai ; Yangtze Estuary ; Yangtze River
英文摘要: Estuarine saltwater intrusions are mainly controlled by river discharge and tides. Unexpectedly, an extremely severe saltwater intrusion event occurred in February 2014 in the Changjiang estuary under normal river discharge conditions. This intrusion cut off the freshwater input for 23 d into the Qingcaosha reservoir, which is the largest estuarine reservoir in the world, creating a severe threat to water safety in Shanghai. No similar catastrophic saltwater intrusion has occurred since records of salinity in the estuary have been kept. During the event, a persistent and strong northerly wind existed, with a maximum speed of 17.6 m s-1, lasting 9 d and coinciding with a distinct water level rise. Our study demonstrates that the extremely severe saltwater intrusion was caused by this northerly wind, which drove substantial landward net water transport to form a horizontal estuarine circulation that flowed into the northern channel and out of the southern channel. This landward net water transport overpowered the seaward-flowing river runoff and transported a large volume of highly saline water into the northern channel. The mechanisms of this severe saltwater intrusion event, including the northerly wind, residual water level rise, landward water transport and resulting horizontal circulation, etc., were systematically investigated. © 2020 Author(s).
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被引频次[WOS]:20   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162566
Appears in Collections:气候变化与战略

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作者单位: Zhu, J., State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China; Cheng, X., State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China; Li, L., State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China; Wu, H., State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China; Gu, J., State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China; Lyu, H., State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China

Recommended Citation:
Zhu J.,Cheng X.,Li L.,et al. Dynamic mechanism of an extremely severe saltwater intrusion in the Changjiang estuary in February 2014[J]. Hydrology and Earth System Sciences,2020-01-01,24(10)
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