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DOI | 10.1002/2017WR021187 |
Statistical Formulation of Generalized Tracer Retention in Fractured Rock | |
Cvetkovic, Vladimir | |
2017-11-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
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 |
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/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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