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    reconnaissance survey

    Interpretation of Out-of-loop Data in Large Fixed-loop TEM Surveys

    Publisher – SEG, San Antonio 2011 Annual Meeting Author – Les P. Beard*, Zonge International, Tucson, Arizona, USA Case Study – [pdf] MIN_SEG_InterpLargeLoopTEM_LPB_2011 Summary

    Detection of Karst Structures Using Airborne EM and VLF

    Publisher – Presented at SEG Annual International Meeting, 1994. Authors – L.P. Beard*, J.E. Nyquist, Oak Ridge National Laboratory, Oak Ridge, Tennessee; P.J. Carpenter, Northern Illinois University Paper – [pdf] SEG_Karst_detection_LPB_1994 Summary Introduction

    Structure Mapping at Trap Spring Oilfield, Nevada, Using Controlled-source Magnetotellurics

    This article gives a particularly good description of the CSAMT method, a type of CSEM surveying in which the transmitter is placed far field from the receiver. At the time of this article, this field practice was necessary to simplify the mathematics involved in modeling the data but is no longer necessary with modern inversion […]