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modeling / inversion

How to conduct an AMT geophysics survey using Zonge GDP equipment and software

Publisher – Zonge, 2016 Download the pdf: Summary A tutorial for acquisition contractors and exploration geologists wanting a thorough description of the equipment and end-to-end process involved in conducting an AMT geophysics survey using the Zonge GDP EM data receiver and Zonge processing and inversion software. This 13-page tutorial outlines the steps in the Audio-frequency […]

2D Inversion of Resistivity and IP Data with Topography

Publisher – Northwest Mining Association, 102nd Annual Convention Proceedings, Geophysics/Geochemistry Session, Spokane, Washington, 1996. Authors – Scott MacInnes, Ken Zonge, Zonge Engineering and Research Organization, Tucson, Arizona, USA Paper – [pdf] MIN_NWMA1996 Abstract

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

Application of an Artificial Neural Network for Airborne Magnetic Data Discrimination

Publisher – SAGEEP, 2011. Authors – Jeannie Norton, Battelle, Oak Ridge, Tennessee Jacob Sheehan*, Zonge International, Denver, Colorado Les Beard*, Zonge International, Tucson, Arizona Paper –  [pdf] UXO_SAGEEP_ANNs_for_ordnance_LPB_2011-UXO Abstract Introduction

Inversion of Magnetotelluric Data and the Elimination of Topographic Effects Through Modeling

Publisher – Zonge Paper –  [pdf] AMT_Topo Abstract

Advancements in 3D Subsurface Modeling Using Seismic Refraction Data

Publisher – EEGS, 2006. Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP) proceedings. Authors – Phil Sirles*, Zonge Engineering and Research Organization, Inc., Denver, Colorado, U.S.A. Alan Rock, Summit Peak Technologies, LLC., Khamis Haramy, Federal Highway Administration – Central Federal Lands Highway Division. U.S.A. Paper – [pdf] INFR_Sirles_2006_Advancement in 3D subsurface […]

CSAMT Inversion Case Study, Valle de Olivos, Chihuahua, Mexico

Publisher – Zonge, 2002. Case Study – [pdf] MIN_LosOlivos Summary

Fast resistivity/IP inversion using a low-contrast approximation

Publisher – Society of Exploration Geophysicists, Geophysics Vol. 61, No. 1 (Jan.-Feb. 1996); p. 169-179. Authors – Les P. Beard *, Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee; Gerald W. Hohmannt, formerly Dept. of Geology and Geophysics, University of Utah; Alan C. Tripp, Dept. of Geology and Geophysics, University of Utah, Salt […]

Assessment of 2D resistivity structures using 1D inversion

Publisher – Society of Exploration Geophysicists (SEG), 1991. Geophysics  Vol. 56, No.6 (June 1991);p. 874–883. Authors – L. P. Beard*, Dept. of Geology and Geophysics, University of Utah, Salt Lake City, Utah, U.S.A.; F. D. Morgan, Dept. of Geophysics, Texas A&M University, College Station, Texas, U.S.A. Paper – [pdf] Assessing_2D_resistivity_LPB_1991 Abstract

Comparison of methods for estimating earth resistivity from airborne electromagnetic measurements

Publisher – Elsevier, 2000. Journal of Applied Geophysics 45 (2000) 239-259 Authors – Les P. Beard*, Geological Survey of Norway, Leiv Eirikssons vei 39 N-7491 Trondheim, Norway Paper – [pdf] Comparison_of_AEM_inversion_methods_JAG_LPB_2000 Abstract