Water Stewardship Information Sources

Citation Best, M E; Todd, B; O'Leary, D; 1995; Groundwater mapping using time-domain electromagnetics: examples from the Fraser Valley, British Columbia; Natural Resources Canada, Cordillera and Pacific Margin/Cordillère et marge du Pacifique; by Geological Survey of Canada; Geological Survey of Canada, Current Research no. 1995-A; 8p.
Organization Geological Survey of Canada
URL http://geoscan.nrcan.gc.ca/starweb/geoscan/servlet.starweb?path=geoscan/fulle.web&search1=R=202753
Abstract/Description or Keywords Time domain electromagnetic (TDEM) surveys were carried out during the summer of 1994 as part of the Geological Survey of Canada's Fraser Valley hydrogeology project. The purpose was to examine the capability of TDEM systems to map surficial geology, for example ground water aquifers and impermeable zones such as clays, and water quality (salinity). Approximately 100 electromagnetic (EM) soundings were collected at 9 sites within the lower Fraser Valley and Fraser Delta using a Geonics EM-47 system operating in the central sounding mode. The sites were chosen to cover a range of geological conditions for evaluating the effectiveness of the EM system. Preliminary interpretation of the data indicates that electromagnetic methods can map surficial geological features for ground water to depths between 150m and 200 m.
Information Type Article
Regional Watershed Lower Fraser
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