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DOI | 10.1002/2017WR020450 |
Direct Breakthrough Curve Prediction From Statistics of Heterogeneous Conductivity Fields | |
Hansen, Scott K.1; Haslauer, Claus P.2; Cirpka, Olaf A.2; Vesselinov, Velimir V.1 | |
2018 | |
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:1页码:271-285 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany |
英文摘要 | This paper presents a methodology to predict the shape of solute breakthrough curves in heterogeneous aquifers at early times and/or under high degrees of heterogeneity, both cases in which the classical macrodispersion theory may not be applicable. The methodology relies on the observation that breakthrough curves in heterogeneous media are generally well described by lognormal distributions, and mean breakthrough times can be predicted analytically. The log-variance of solute arrival is thus sufficient to completely specify the breakthrough curves, and this is calibrated as a function of aquifer heterogeneity and dimensionless distance from a source plane by means of Monte Carlo analysis and statistical regression. Using the ensemble of simulated groundwater flow and solute transport realizations employed to calibrate the predictive regression, reliability estimates for the prediction are also developed. Additional theoretical contributions include heuristics for the time until an effective macrodispersion coefficient becomes applicable, and also an expression for its magnitude that applies in highly heterogeneous systems. It is seen that the results here represent a way to derive continuous time random walk transition distributions from physical considerations rather than from empirical field calibration. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428474000016 |
WOS关键词 | SOLUTE FLUX APPROACH ; RANDOM-WALK METHOD ; POROUS-MEDIA ; TRAVEL-TIME ; HYDRAULIC CONDUCTIVITY ; NUMERICAL SIMULATIONS ; TRANSPORT ; DISPERSION ; FLOW ; AQUIFERS |
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/19960 |
专题 | 资源环境科学 |
作者单位 | 1.Los Alamos Natl Lab, Computat Earth Sci Grp EES 16, Los Alamos, NM USA; 2.Univ Tubingen, Ctr Appl Geosci, Tubingen, Baden Wurttembe, Germany |
推荐引用方式 GB/T 7714 | Hansen, Scott K.,Haslauer, Claus P.,Cirpka, Olaf A.,et al. Direct Breakthrough Curve Prediction From Statistics of Heterogeneous Conductivity Fields[J]. WATER RESOURCES RESEARCH,2018,54(1):271-285. |
APA | Hansen, Scott K.,Haslauer, Claus P.,Cirpka, Olaf A.,&Vesselinov, Velimir V..(2018).Direct Breakthrough Curve Prediction From Statistics of Heterogeneous Conductivity Fields.WATER RESOURCES RESEARCH,54(1),271-285. |
MLA | Hansen, Scott K.,et al."Direct Breakthrough Curve Prediction From Statistics of Heterogeneous Conductivity Fields".WATER RESOURCES RESEARCH 54.1(2018):271-285. |
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