M-07 EM AND ELECTRICAL STUDIES OF ENVIRONMENTAL IMPACTS CAUSED BY A LANDFILL Introduction 1 JAANA LOHVA TARMO JOKINEN HEIKKI VANHALA MARI LAHTI and HEIKKI SOININEN Geological Survey of Finland PO Box 96 02151 Espoo Finland Groundwater contamination is a risk at old landfill areas. Modern landfills can also be environmental hazards. Airborne EM ground EM and electrical surveys can map subsurface resistivity anomalies associated with possible contamination zones. In this paper we present a case study where we have tried to locate smallest possible changes in conductivity by modeling and interpreting AEM and detailed ground electrical and EM anomalies. Jokinen


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