气候变化领域集成服务门户(CCPortal): Processes of Stratification and Destratification During An Extreme River Discharge Event in the German Bight ROFI

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DOI	10.1029/2019JC015987
	Processes of Stratification and Destratification During An Extreme River Discharge Event in the German Bight ROFI
	Chegini F.; Holtermann P.; Kerimoglu O.; Becker M.; Kreus M.; Klingbeil K.; Gräwe U.; Winter C.; Burchard H.
发表日期	2020
ISSN	21699275
卷号	125 期号:8
英文摘要	Processes of stratification and destratification in the German Bight region of fresh water influence (ROFI) are investigated following an extreme river discharge event in June 2013. For this purpose, a high-resolution baroclinic ocean model is set up and validated against field data. The model results are used to study the temporal and spatial variability of stratification and the duration of persistent stratification in 2013. The relevant processes affecting stratification are investigated by analyzing the potential energy anomaly budget, with a focus on mixing and tidal straining. It is shown that the stratification in the German Bight is highly affected by the spring-neap tidal cycle, with generally less stratification at spring tides due to dominant tidal mixing. It is also shown that the location of the river plume can modify this pattern. During spring tides, if the river plume is confined to the eastern region, stratification decreases significantly, as expected, due to the dominance of mixing over tidal straining. On the other hand, if the river plume moves toward deeper regions at spring tides, strong tidal straining becomes present. In this condition, mixing is weak, and the dominant tidal straining results in persistent stratification. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	extreme river discharge; German Bight ROFI; mixing; numerical model; stratification; tidal-straining
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186758
作者单位	Leibniz Institute for Baltic Sea Research Warnemünde (IOW), Rostock, Germany; Institute for Coastal Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany; Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky University Oldenburg, Oldenburg, Germany; Institute of Geosciences, Christian-Albrechts-University, Kiel, Germany; Federal Waterways Engineering and Research Institute, Hamburg, Germany
推荐引用方式 GB/T 7714	Chegini F.,Holtermann P.,Kerimoglu O.,et al. Processes of Stratification and Destratification During An Extreme River Discharge Event in the German Bight ROFI[J],2020,125(8).
APA	Chegini F..,Holtermann P..,Kerimoglu O..,Becker M..,Kreus M..,...&Burchard H..(2020).Processes of Stratification and Destratification During An Extreme River Discharge Event in the German Bight ROFI.Journal of Geophysical Research: Oceans,125(8).
MLA	Chegini F.,et al."Processes of Stratification and Destratification During An Extreme River Discharge Event in the German Bight ROFI".Journal of Geophysical Research: Oceans 125.8(2020).