Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR022857 |
Local and Global Sensitivity Analysis of Cr (VI) Geogenic Leakage Under Uncertain Environmental Conditions | |
Ceriotti, G.1; Guadagnini, L.1; Porta, G.1; Guadagnini, A.1,2 | |
2018-08-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:8页码:5785-5802 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; USA |
英文摘要 | We focus on the joint application of local and global sensitivity analyses to characterize propagation of model parameter uncertainties to outputs of subsurface water geochemical models. The latter typically involve uncertain inputs, including environmental conditions, mineral rock composition, and flow/transport features. In this context, implementation of sensitivity analysis techniques enables us to grasp the relative role of each model input. Here we focus on the application of several sensitivity approaches to the assessment of Cr (VI) geogenic leakage due to water-rock interactions. We specifically target the impact of uncertain environmental conditions on the chemical composition of spring waters following water transfer through a host rock system with given mineral composition. We employ a reaction path modeling approach and represent uncertainties of environmental conditions through three parameters, that is, oxygen fugacity (f(O2)), CO2 fugacity (f(CO2)), and temperature, which we consider as random quantities. We consider three diverse methodologies, that is, (a) the Scatter Plots sensitivity analysis, (b) the Distributed Evaluation of Local Sensitivity Analysis, and (c) a moment-based global sensitivity analysis. Our results suggest that (a) the relative importance of a given model parameter in driving the uncertainty of the spring water composition may display remarkable variations across the sampled parameter space and (b) parameter ranking through sensitivity metrics for geochemical applications in subsurface water resources requires a joint assessment of local and global sensitivity. |
英文关键词 | hexavalent chromium sensitivity analysis ophiolitic rocks uncertainty quantification reaction path modeling spring water quality |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445451800035 |
WOS关键词 | PROCESSES INVOLVING MINERALS ; PRESENT-DAY SERPENTINIZATION ; POLYNOMIAL CHAOS EXPANSION ; HEXAVALENT CHROMIUM ; IRREVERSIBLE REACTIONS ; AQUEOUS-SOLUTIONS ; DRINKING-WATER ; MASS-TRANSFER ; HIGH-PH ; GEOCHEMISTRY |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21446 |
专题 | 资源环境科学 |
作者单位 | 1.Politecn Milan, Dept Civil & Environm Engn, Milan, Italy; 2.Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ USA |
推荐引用方式 GB/T 7714 | Ceriotti, G.,Guadagnini, L.,Porta, G.,et al. Local and Global Sensitivity Analysis of Cr (VI) Geogenic Leakage Under Uncertain Environmental Conditions[J]. WATER RESOURCES RESEARCH,2018,54(8):5785-5802. |
APA | Ceriotti, G.,Guadagnini, L.,Porta, G.,&Guadagnini, A..(2018).Local and Global Sensitivity Analysis of Cr (VI) Geogenic Leakage Under Uncertain Environmental Conditions.WATER RESOURCES RESEARCH,54(8),5785-5802. |
MLA | Ceriotti, G.,et al."Local and Global Sensitivity Analysis of Cr (VI) Geogenic Leakage Under Uncertain Environmental Conditions".WATER RESOURCES RESEARCH 54.8(2018):5785-5802. |
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