Identifying watershed-scale groundwater flow barriers: the Yoqne'am Fault in Israel

Dafny, Elad and Gvirtzman, Haim and Burg, Avihu (2013) Identifying watershed-scale groundwater flow barriers: the Yoqne'am Fault in Israel. Hydrogeology Journal, 21 (5). pp. 1035-1051. ISSN 1431-2174

Abstract

Geological faults may serve either as groundwater conduits or barriers, depending on their hydraulic properties. Determining fault characteristics is therefore important when deciding inputs for numerical models developed for watershed-scale groundwater studies. Cutting-edge methods for determining fault characteristics have been widely applied for oil and gas reservoir characterization purposes, whereas water-resource studies simply use a priori values. This study evaluates the hydraulic properties of the Yoqne'am Fault (YF), in northern Israel, which impacts groundwater flow within the Judea Group Aquifer (JGA). The YF has a vertical throw of several hundred to one thousand meters accompanied by pronounced lateral throw. Detailed examination of hydrological and geochemical data from nearby wells, structural maps and numerical modeling results, suggests that the YF acts as a semi-impermeable feature with a hydraulic conductivity of less than 4x10e-2 m/d. The YF hydraulic conductivity is four orders of magnitude below that of the surrounding Judea Group rocks, and only a limited volume of water can leak through the fault. For that reason, it is concluded that the YF acts as a boundary between two large groundwater basins.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Springer-Verlag Berlin Heidelberg. Published online 19 Apr 2013. Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 05 Aug 2013 01:49
Last Modified: 10 Jul 2014 03:03
Uncontrolled Keywords: Israel; fault; hydraulic properties; Judea Group Aquifer; numerical modeling
Fields of Research : 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040604 Natural Hazards
04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040603 Hydrogeology
04 Earth Sciences > 0404 Geophysics > 040403 Geophysical Fluid Dynamics
Socio-Economic Objective: D Environment > 96 Environment > 9611 Physical and Chemical Conditions of Water > 961103 Physical and Chemical Conditions of Water in Fresh, Ground and Surface Water Environments (excl. Urban and Industrial Use)
Identification Number or DOI: 10.1007/s10040-013-0982-3
URI: http://eprints.usq.edu.au/id/eprint/23196

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