Comparative study of transient hydraulic tomography with varying parameterizations and zonations: Laboratory sandbox investigation | |
Luo, Ning1; Zhao, Zhanfeng1,2; Human, Walter A.1; Berg, Steven J.1,3 | |
刊名 | JOURNAL OF HYDROLOGY |
2017-11-01 | |
卷号 | 554页码:758-779 |
关键词 | Aquifer heterogeneity Hydraulic tomography Transient analysis Geological information Inverse modeling Model calibration and validation Model comparison |
ISSN号 | 0022-1694 |
DOI | 10.1016/j.jhydrol.2017.09.045 |
通讯作者 | Luo, Ning(nluo1222@gmail.com) |
英文摘要 | Transient hydraulic tomography (THT) is a robust method of aquifer characterization to estimate the spatial distributions (or tomograms) of both hydraulic conductivity (K) and specific storage (S-s). However, the highly-parameterized nature of the geostatistical inversion approach renders it computationally intensive for large-scale investigations. In addition, geostatistics-based THT may produce overly smooth tomograms when head data used to constrain the inversion is limited. Therefore, alternative model conceptualizations for THT need to be examined. To investigate this, we simultaneously calibrated different groundwater models with varying parameterizations and zonations using two cases of different pumping and monitoring data densities from a laboratory sandbox. Specifically, one effective parameter model, four geology-based zonation models with varying accuracy and resolution, and five geostatistical models with different prior information are calibrated. Model performance is quantitatively assessed by examining the calibration and validation results. Our study reveals that highly parameterized geostatistical models perform the best among the models compared, while the zonation model with excellent knowledge of stratigraphy also yields comparable results. When few pumping tests with sparse monitoring intervals are available, the incorporation of accurate or simplified geological information into geostatistical models reveals more details in heterogeneity and yields more robust validation results. However, results deteriorate when inaccurate geological information are incorporated. Finally, our study reveals that transient inversions are necessary to obtain reliable K and Ss estimates for making accurate predictions of transient drawdown events. Crown Copyright (C) 2017 Published by Elsevier B.V. All rights reserved. |
资助项目 | Natural Sciences and Engineering Research Council of Canada (NSERC) ; China Scholarship Council |
WOS关键词 | IMAGE-GUIDED INVERSION ; UNCONFINED AQUIFER ; SOLUTE TRANSPORT ; GEOLOGICAL DATA ; PUMPING TESTS ; TRAVEL-TIME ; CONDUCTIVITY ; HETEROGENEITY ; MODEL ; VALIDATION |
WOS研究方向 | Engineering ; Geology ; Water Resources |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000415769600056 |
资助机构 | Natural Sciences and Engineering Research Council of Canada (NSERC) ; China Scholarship Council |
内容类型 | 期刊论文 |
源URL | [http://ir.igsnrr.ac.cn/handle/311030/60904] |
专题 | 中国科学院地理科学与资源研究所 |
通讯作者 | Luo, Ning |
作者单位 | 1.Univ Waterloo, Dept Earth & Environm Sci, Waterloo, ON N2L 3G1, Canada 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 3.Aquanty Inc, Waterloo, ON N2L 5C6, Canada |
推荐引用方式 GB/T 7714 | Luo, Ning,Zhao, Zhanfeng,Human, Walter A.,et al. Comparative study of transient hydraulic tomography with varying parameterizations and zonations: Laboratory sandbox investigation[J]. JOURNAL OF HYDROLOGY,2017,554:758-779. |
APA | Luo, Ning,Zhao, Zhanfeng,Human, Walter A.,&Berg, Steven J..(2017).Comparative study of transient hydraulic tomography with varying parameterizations and zonations: Laboratory sandbox investigation.JOURNAL OF HYDROLOGY,554,758-779. |
MLA | Luo, Ning,et al."Comparative study of transient hydraulic tomography with varying parameterizations and zonations: Laboratory sandbox investigation".JOURNAL OF HYDROLOGY 554(2017):758-779. |
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