{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,9,16]],"date-time":"2024-09-16T19:47:16Z","timestamp":1726516036325},"reference-count":32,"publisher":"Geological Society of London","issue":"1","license":[{"start":{"date-parts":[[1997,1,1]],"date-time":"1997-01-01T00:00:00Z","timestamp":852076800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-002"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["EGSP"],"published-print":{"date-parts":[[1997,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:p>A large number of landfills and waste disposal sites have been located on or in alluvial and glacial deposits. Fine- grained silts and clay layers in these alluvial deposits, or man-made liners of rolled clay, perhaps combined with a polymer sheeting, are important barriers and retardants to vertical leachate migration underneath the landfills. Ideally, these barriers prevent leachates from contaminating groundwater, and resistivity surveys are useful to study site integrity, provided a sufficient resistivity contrast exists. In this article, we introduce a different approach for resistivity monitoring of landfills, waste fluid ponds, salt storage sites, or other sites where environmental concerns exist as to the migration of materials through porous or fractured media. The method is based on the measurement of the horizontal gradient of the vertical electric field as a function of receiver distance. Numerical model responses over a hypothetical landfill model are presented to demonstrate the method. Model results show that monitoring the vertical electric field and presenting the horizontal gradient of the vertical electric field as a function of sampling distance provides good sensitivity to track the movement of an anomalous resistivity zone. The theory is complete, but the method needs to be field tested to determine operational sensitivity and repeatability.<\/jats:p>","DOI":"10.1144\/gsl.eng.1997.012.01.07","type":"journal-article","created":{"date-parts":[[2008,4,30]],"date-time":"2008-04-30T20:36:58Z","timestamp":1209587818000},"page":"89-95","source":"Crossref","is-referenced-by-count":0,"title":["Resistivity (\u2126-method) method for environmental monitoring: a new approach"],"prefix":"10.1144","volume":"12","author":[{"given":"Satyendra","family":"Narayan","sequence":"first","affiliation":[{"name":"Department of Earth Sciences, University of Waterloo\rOntario, Canada"}]},{"given":"M. B.","family":"Dusseault","sequence":"additional","affiliation":[{"name":"Department of Earth Sciences, University of Waterloo\rOntario, Canada"}]}],"member":"1881","published-online":{"date-parts":[[1997,11,28]]},"reference":[{"doi-asserted-by":"publisher","key":"e_1_2_1_2_1","DOI":"10.1190\/1.9781560802785.ch24"},{"doi-asserted-by":"publisher","key":"e_1_2_1_3_1","DOI":"10.1111\/j.1745-6584.1977.tb03158.x"},{"doi-asserted-by":"publisher","key":"e_1_2_1_4_1","DOI":"10.1190\/1.1443094"},{"key":"e_1_2_1_5_1","first-page":"253","volume-title":"Detection of Subsurface Flow Phenomena","author":"Blum R.","year":"1989","unstructured":"Blum R. , Merkler G. P. Geoelectrical mapping and groundwater contamination Detection of Subsurface Flow Phenomena 1989 Berlin Springer 253 260"},{"key":"e_1_2_1_6_1","first-page":"317","volume-title":"Hydrology and Water Resources Symposium","author":"Buselli G.","year":"1986","unstructured":"Buselli G., Barber C., Williamson D. R. 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Comparison of the resistivity and electromagnetic methods over a contaminate plume using numerical modelling 1984 Proceedings of the NWWA conference on Surface and Borehole Geophysical Methods Feb. 1984 San Antonio, Texas 316 333"},{"key":"e_1_2_1_22_1","first-page":"95","article-title":"The resolving power of geoelectric measurements for delineating resistive zones within the crust, in the structure and physical properties of the earth crust","volume":"14","author":"Madden T. R.","year":"1971","unstructured":"Madden T. R. , Heacock J. G. The resolving power of geoelectric measurements for delineating resistive zones within the crust, in the structure and physical properties of the earth crust Am. Geophysical Union, Geophysical Monogram 1971 14 95 105","journal-title":"Am. 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