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Geophysics Methodology

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

Analysis of Uncertainty of Vs30 in Southern California

Publisher – AGU, 2009. Authors – Mayo Thompson*, John N. Louie, Mahesh S. Dhar, Nevada Seismological Laboratory, Mackay School of Earth Sciences and Engineering, University of Nevada, Reno, Nevada, U.S.A.; Aasha Pancha, Satish Pullammanappallil, Optim SDS, Reno, Nevada, U.S.A.; Alan K. Yong, Earthquake Hazards Team, U.S. Geological Survey, Pasadena, California, U.S.A. Poster! – Introduction

Lightning-Induced Remanent Magnetic Anomalies in Low-Altitude Aeromagnetic Data

Publisher – JEEG, December 2009, Volume 14, Issue 4, pp. 155–161 Authors – Les P. Beard*, Jeannemarie Norton and Jacob R. Sheehan*, Battelle-Oak Ridge Operations, Oak Ridge, Tennessee Paper! Abstract

Effect of Electrode Contact Resistance on Electrical Field Measurements

Publisher – Presented at the 55th Annual SEG Convention, Washington, D.C. October,1985. Authors – Kenneth L. Zonge and Larry J. Hughes, Zonge Engineering and Research Organization, Inc., Tucson, Arizona Paper – [pdf] Electrode Contact Resistance Abstract

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 […]

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

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