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oa A high density sampling survey of shallow karst features using EM and magnetic profiling techniques
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 3rd EEGS Meeting, Aug 1997, cp-95-00045
- ISBN: 978-94-6282-128-6
Abstract
During field experiments on high density sampling shallow EM (Geonics EM31) surveying near Moura, Portugal, it was found that a local shallow terrain depression showed enhanced rainwater infiltration and high apparent conductivity values (Sporry et. al. 1995). Other conductivity anomalies suggested a pattem correlating with the general geological strike direction (NW-SE).