期刊
ADVANCES IN WATER RESOURCES
卷 71, 期 -, 页码 162-176出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.advwatres.2014.06.008
关键词
Hydraulic tomography; Cross-correlation analysis; Inversion; Joint interpretation
资金
- NSF [EAR 1014594]
- Strategic Environmental Research and Development Program (SERDP) through AMEC
- China Scholarship Council
- Department of Education, China, through Jilin University, China
Using the first-order analysis, we investigate the spatial cross-correlation between hydraulic conductivity variation and specific discharge (flux) as well as its components measured in a borehole under steady-state flow conditions during cross-hole pumping tests in heterogeneous aquifers. These spatial correlation patterns are found to be quite different from that between the hydraulic conductivity variation and the hydraulic head measurement in the same borehole. This finding suggests that a specific discharge measurement carries non-redundant information about the spatial distribution of heterogeneity, even this measurement is collected from the same location where the head measurement is taken. As such, specific discharge observations should be included in the analysis of hydraulic tomography to increase the resolution of estimated aquifer heterogeneity. Using numerical experiments, we demonstrate the effectiveness of the joint interpretation of both hydraulic heads and fluxes for mapping fracture distributions in a hypothetic geologic medium. (C) 2014 Elsevier Ltd. All rights reserved.
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