气候变化领域集成服务门户(CCPortal): Hydro-environmental processes governing the formation of hypoxic parcels in an inverse estuarine water body: Assessment of physical controls

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DOI	10.1016/j.marpolbul.2020.111311
	Hydro-environmental processes governing the formation of hypoxic parcels in an inverse estuarine water body: Assessment of physical controls
	Alosairi Y.; Alsulaiman N.
发表日期	2020
ISSN	0025326X
卷号	157
英文摘要	Hypoxia is often thought of as the key factor responsible for fish kill events in coastal areas but fish kill events are too complex to be governed by a single factor. The events are influenced by a combination of chemical, biological and physical processes. Hydrodynamics play a key role in understanding the formation of hypoxia in shallow waters. This study aims to identify the settings of the physical forces that lead to a large-scale depletion of dissolved oxygen in Kuwait Bay at the northwest of the Arabian Gulf. The assessment, made with a validated three-dimensional numerical model (Alosairi and Alsulaiman, 2019), revealed that the pollution from the outfalls leads to nearfield depletion of dissolved oxygen but has only a minor effect on the bay-scale dissolved oxygen. This is a result of the strong dynamics of Kuwait Bay, which mixes the pollutant rapidly before it is transported seawards. Offshore, a low dynamic region has been identified near Jahra Bay which is susceptible to occasional dissolved oxygen depletion. Assessment of the physical forces revealed that the density-driven current and, to a greater extent the wind regime, controlled the formation of a hypoxic parcel near Jahra Bay. The combination of neap tides and low mixed winds reduced mixing and enabled the longer residence times of Kuwait Bay. These are the most critical circumstances, as the average dissolved oxygen can be reduced by 50% during summer. The circumstance resulting in low dynamics near Jahra Bay were also found to be effective in explaining algal blooms. © 2020 Elsevier Ltd
英文关键词	Algal bloom; Delft3D-WAQ; Dissolved oxygen; Fish kill; Numerical modelling; Water quality
语种	英语
scopus关键词	Dissolution; Fish; Offshore oil well production; Pollution; Dynamic region; Environmental process; Estuarine waters; Physical control; Physical force; Physical process; Residence time; Three-dimensional numerical modeling; Dissolved oxygen; dissolved oxygen; oxygen; algal bloom; dissolved oxygen; estuarine pollution; governance approach; hydrodynamics; hypoxic conditions; numerical model; pollution control; Article; biochemical oxygen demand; coastal waters; concentration (parameter); controlled study; environmental factor; environmental monitoring; estuary; fish poisoning; geographic distribution; hydrodynamics; nonhuman; oxygen consumption; Persian Gulf; pollution transport; retention time; summer; synthesis; water analysis; water pollution; water quality; animal; eutrophication; hypoxia; Kuwait; wind; Kuwait Bay; Kuwait [Middle East]; algae; Animals; Environmental Monitoring; Eutrophication; Hypoxia; Kuwait; Oxygen; Wind
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148842
作者单位	Coastal Management Program, Environmental and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait
推荐引用方式 GB/T 7714	Alosairi Y.,Alsulaiman N.. Hydro-environmental processes governing the formation of hypoxic parcels in an inverse estuarine water body: Assessment of physical controls[J],2020,157.
APA	Alosairi Y.,&Alsulaiman N..(2020).Hydro-environmental processes governing the formation of hypoxic parcels in an inverse estuarine water body: Assessment of physical controls.Marine Pollution Bulletin,157.
MLA	Alosairi Y.,et al."Hydro-environmental processes governing the formation of hypoxic parcels in an inverse estuarine water body: Assessment of physical controls".Marine Pollution Bulletin 157(2020).