GSTDTAP  > 资源环境科学
DOI10.1002/2017WR021187
Statistical Formulation of Generalized Tracer Retention in Fractured Rock
Cvetkovic, Vladimir
2017-11-01
发表期刊WATER RESOURCES RESEARCH
ISSN0043-1397
EISSN1944-7973
出版年2017
卷号53期号:11
文章类型Article
语种英语
国家Sweden
英文摘要

We study tracer retention in fractured rock by combing Lagrangian and time domain random walk frameworks, as well as a statistical representation of the retention process. Mass transfer is quantified by the retention time distribution that follows from a Lagrangian coupling between advective transport and mass exchange processes, applicable for advection-dominated transport. A unifying parametrization is presented for generalized diffusion using two rates denoted by k(1) and k(2) where k(1) is a forward rate and k(2) a reverse rate, plus an exponent as an additional parameter. For the Fickian diffusion model, k(1) and k(2) are related to measurable retention properties of the fracture-matrix by the method of moments, whereas for the non-Fickian case dimensional analysis is used. The derived retention time distributions are exemplified for interpreting tracer tests as well as for predictive modeling of expected tracer breakthrough. We show that non-Fickian effects can be notable when transport is upscaled based on a non-Fickian interpretation of a tracer test for which deviations from Fickianity are relatively small. The statistical representation of retention clearly shows the significance of the forward rate k(1) which depends on the active specific surface area and is the most difficult parameter to characterize in the field.


英文关键词retention fractured rock rock matrix retention time
领域资源环境
收录类别SCI-E
WOS记录号WOS:000418736700006
WOS关键词HIGHLY HETEROGENEOUS FORMATIONS ; MULTIPLE-TRAPPING MODEL ; MULTIRATE MASS-TRANSFER ; SOLUTE TRANSPORT ; MATRIX DIFFUSION ; RANDOM-WALK ; POROUS-MEDIA ; CONTINUUM REPRESENTATION ; RADIONUCLIDE MIGRATION ; PASSIVE SOLUTE
WOS类目Environmental Sciences ; Limnology ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/21296
专题资源环境科学
作者单位KTH Royal Inst Technol, Div Water Resources Engn, Stockholm, Sweden
推荐引用方式
GB/T 7714
Cvetkovic, Vladimir. Statistical Formulation of Generalized Tracer Retention in Fractured Rock[J]. WATER RESOURCES RESEARCH,2017,53(11).
APA Cvetkovic, Vladimir.(2017).Statistical Formulation of Generalized Tracer Retention in Fractured Rock.WATER RESOURCES RESEARCH,53(11).
MLA Cvetkovic, Vladimir."Statistical Formulation of Generalized Tracer Retention in Fractured Rock".WATER RESOURCES RESEARCH 53.11(2017).
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