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groundwater level monitoring-importance global groundwater monitoring network

Journal of groundwater Science and Engineering 2015年第4期3卷 295-305页

作者： Ramasamy Jayakumar Asia and Pacific Regional Bureau for Education UNESCO

The paper illustrates the concept, methodology, essential components and importance of groundwater level monitoring in terms of various aquifers such as multiple aquifer, karst aquifer and other aquifers. The groundwater resources in Mekong countries including Cambodia, Laos PDR, Myanmar, Thailand and Vietnam have also been reviewed. Finally, the author briefly presents Global groundwater monitoring Network.

关键词： groundwater monitoring groundwater resources Mekong countries monitoring network

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Entropy-Based Approach to Remove Redundant monitoring Wells from Regional-Scale groundwater Network

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Journal of China University of Geosciences 2002年第3期13卷 266-273页

作者： Chen Zhihua Engineering Faculty, China University of Geosciences, Wuhan 430074 Jing Juanli Graduate School, China University of Geosciences, Wuhan 430074 Chen Gang Engineering Faculty, China University of Geosciences, Wuhan 430074 Engineering Faculty China University of Geosciences Wuhan 430074 Graduate School China University of Geosciences Wuhan 430074

An entropy-based approach is applied to identify redundant wells in thenetwork. In the process of this research, groundwater-monitoring network is considered as acommunication system with a capability to transfer information, and monitoring wells are taken asinformation receivers. The concepts of entropy and mutual information are then applied to measurethe information content of individual monitoring well and information relationship betweenmonitoring well pairs. The efficiency of information transfer among monitoring wells is the basis tojudge the redundancy in the network. And the capacity of the monitoring wells to provideinformation on groundwater is the point of evaluation to identify redundant monitoring wells. Thisapproach is demonstrated using the data from a regional-scale ground-water network in Hebei plain,China The result shows that the entropy-based method is recommendable in optimizing groundwaternetworks, especially for those within media of higher heterogeneities and ani-sotropies.

关键词： entropy groundwater monitoring network optimize redundant

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Health Risks Assessment Due to Exposure to Vinyl Chloride in groundwater from a Closed Landfill： A Case Study as a Contaminant of Concern and Effect of Subsurface Characteristics

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Journal of Environmental Science and Engineering 2010年第7期4卷 41-49页

作者： B. Sizirici B. Tansel Florida International University Civil and Environmental Engineering Department Miami 33174 Florida USA

The purpose of this study was to analyze the migration pathways of contaminants from closed landfills and to estimate health risks based on soil characteristics. The health risks were estimated using Framework for Risk Analysis Multimedia Environmental Systems （FRAMES） software. The sensitivity of human health risks and hazard indices due to vinyl chloride contamination in groundwater were performed in relation to soil characteristics such as Darcy velocity, thickness of soil layer, mass of contaminant present in the aquifer. Based on the analysis, Darcy velocity showed no effect on estimated risks. Since soil layer thickness had a significant effect on the estimated health risks, effects of different soil types on estimated risks were analyzed. The results showed that soils from the least appropriate to the most appropriate for risk management due to groundwater contamination were sand, sandy clay, sandy loam, loam and clay loam. FRAMES model was suitable for assessing the health risks due to vinyl chloride contamination in groundwater originating from a municipal solid waste landfill. The model showed the changes in both carcinogenic and non carcinogenic risks over time. The estimated health risks were directly correlated with the levels of vinyl chloride detected in groundwater.

关键词： Health risk assessment FRAMES municipal solid waste landfills groundwater monitoring vinyl chloride factorial analysis.

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