A Gis-based system for assessing marine water quality around offshore platforms

doi:10.1016/j.ocecoaman.2014.10.003

	A Gis-based system for assessing marine water quality around offshore platforms
	Lu, Fang 1; Chen, Zhi 1; Liu, Wenquan 2
刊名	OCEAN & COASTAL MANAGEMENT
	2014-12
卷号	102 页码:294-306
关键词	Marine water quality Offshore oil platforms Fuzzy risk assessment GIS System development
ISSN号	0964-5691
DOI	10.1016/j.ocecoaman.2014.10.003
英文摘要	In this study, a GIS-based system (MWQ-FES) is developed for marine water quality assessment around offshore oil platforms. The developed method consists of a fuzzy risk assessment model, a eutrophication assessment module, a heavy metal assessment module, a dynamic database, the ArcGIS Engine, and a graphical user interface (GUI). The developed GIS-based GUI system integrates the fuzzy risk calculation, eutrophication risk assessment and heavy metal risk evaluation and both spatially and visually presents the results in the form of contour maps and color-coded maps that indicate the risk levels. The assessment modules analyze a large amount of data with both spatial and temporal distributions; these data are managed by the developed system. An application of the developed MWQ-FES to a real case study in China is presented in this study. The MWQ-FES produces risk maps that depict the spatial distribution of the integrated water quality index values, the eutrophication risk level and the heavy metal risk level in the study area. The primary factors that affect the water quality are subsequently examined using the visualized results. The results of the fuzzy risk assessment model show that the general water quality status in the study area was good in Oct. 2005, May 2006, and Sept. 2007, while fair water quality occurred in May 2007. For Oct. 2005, May 2006, and Sept. 2007, the eutrophication risk levels were oligotrophic, slightly eutrophic and mesotrophic, respectively. However, the eutrophication risk level at most of the sites in May 2007 was highly eutrophic. These findings agreed with previously reported water quality variations in the study area. The heavy metal risk level in the study area exhibited a slight risk during all four investigations. As for the ecological risk in the mariculture zone near the study area, the heavy metal risk exhibited a slight risk; the eutrophication risk level ranged from eutrophic to slightly mesotrophic. A comparison with previous environmental assessment results for the same study area confirms that the developed MWQ-FES can provide a better understanding of the distribution of the water quality status and ecological risk levels. Moreover, MWQ-FES can be a useful decision-support tool for marine water quality management (c) 2014 Elsevier Ltd. All rights reserved.
WOS关键词	ECOLOGICAL RISK-ASSESSMENT ; HEAVY-METALS ; POLLUTION ; SEDIMENTS ; STREAMS ; CHINA ; INDEX ; BASIN ; TOOL ; SEA
WOS研究方向	Oceanography ; Water Resources
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000347579600032
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26415]
专题	自然资源部第一海洋研究所
通讯作者	Chen, Zhi
作者单位	1.Concordia Univ, Dept Bldg Civil & Environm Engn, Montreal, PQ H3G 1M8, Canada 2.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Lu, Fang,Chen, Zhi,Liu, Wenquan. A Gis-based system for assessing marine water quality around offshore platforms[J]. OCEAN & COASTAL MANAGEMENT,2014,102:294-306.
APA	Lu, Fang,Chen, Zhi,&Liu, Wenquan.(2014).A Gis-based system for assessing marine water quality around offshore platforms.OCEAN & COASTAL MANAGEMENT,102,294-306.
MLA	Lu, Fang,et al."A Gis-based system for assessing marine water quality around offshore platforms".OCEAN & COASTAL MANAGEMENT 102(2014):294-306.