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Three-dimensional imaging of aquifer and aquitard heterogeneity via transient hydraulic tomography at a highly heterogeneous field site
Zhao, Zhanfeng1,2; Illman, Walter A.2
2018-04-01
Source PublicationJOURNAL OF HYDROLOGY
ISSN0022-1694
Volume559Pages:392-410
Corresponding AuthorZhao, Zhanfeng(zhaozhanfeng@igsnrr.ac.cn)
AbstractPrevious studies have shown that geostatistics-based transient hydraulic tomography (THT) is robust for subsurface heterogeneity characterization through the joint inverse modeling of multiple pumping tests. However, the hydraulic conductivity (K) and specific storage (S-s) estimates can be smooth or even erroneous for areas where pumping/observation densities are low. This renders the imaging of interlayer and intralayer heterogeneity of highly contrasting materials including their unit boundaries difficult. In this study, we further test the performance of THT by utilizing existing and newly collected pumping test data of longer durations that showed drawdown responses in both aquifer and aquitard units at a field site underlain by a highly heterogeneous glaciofluvial deposit. The robust performance of the THT is highlighted through the comparison of different degrees of model parameterization including: (1) the effective parameter approach; (2) the geological zonation approach relying on borehole logs; and (3) the geostatistical inversion approach considering different prior information (with/without geological data). Results reveal that the simultaneous analysis of eight pumping tests with the geostatistical inverse model yields the best results in terms of model calibration and validation. We also find that the joint interpretation of long-term drawdown data from aquifer and aquitard units is necessary in mapping their full heterogeneous patterns including intralayer variabilities. Moreover, as geological data are included as prior information in the geostatistics-based THT analysis, the estimated K values increasingly reflect the vertical distribution patterns of permeameter-estimated K in both aquifer and aquitard units. Finally, the comparison of various THT approaches reveals that differences in the estimated K and S-s tomograms result in significantly different transient drawdown predictions at observation ports. (C) 2018 Elsevier B.V. All rights reserved.
KeywordHydraulic tomography Subsurface heterogeneity Aquitard characterization Model calibration and validation Inverse modeling Model comparison
DOI10.1016/j.jhydrol.2018.02.024
WOS KeywordENSEMBLE KALMAN FILTER ; SANDBOX EXPERIMENTS ; LABORATORY SANDBOX ; UNCONFINED AQUIFERS ; GEOLOGICAL DATA ; PUMPING TESTS ; CONDUCTIVITY ; PARAMETERS ; INVERSION ; SYSTEMS
Indexed BySCI
Language英语
Funding ProjectEnvironmental Security and Technology Certification Program (ESTCP)[ER201212] ; China Scholarship Council ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Ontario Research Foundation (ORF) ; Canada Foundation for Innovation (CFI)
Funding OrganizationEnvironmental Security and Technology Certification Program (ESTCP) ; China Scholarship Council ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Ontario Research Foundation (ORF) ; Canada Foundation for Innovation (CFI)
WOS Research AreaEngineering ; Geology ; Water Resources
WOS SubjectEngineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000430902000030
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/55012
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhao, Zhanfeng
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China
2.Univ Waterloo, Dept Earth & Environm Sci, Waterloo, ON, Canada
Recommended Citation
GB/T 7714
Zhao, Zhanfeng,Illman, Walter A.. Three-dimensional imaging of aquifer and aquitard heterogeneity via transient hydraulic tomography at a highly heterogeneous field site[J]. JOURNAL OF HYDROLOGY,2018,559:392-410.
APA Zhao, Zhanfeng,&Illman, Walter A..(2018).Three-dimensional imaging of aquifer and aquitard heterogeneity via transient hydraulic tomography at a highly heterogeneous field site.JOURNAL OF HYDROLOGY,559,392-410.
MLA Zhao, Zhanfeng,et al."Three-dimensional imaging of aquifer and aquitard heterogeneity via transient hydraulic tomography at a highly heterogeneous field site".JOURNAL OF HYDROLOGY 559(2018):392-410.
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