seismic refraction News

  • ASTM D5777 - 00(2011)e1 standard guide for using the seismic refraction method for subsurface investigation

    This guide summarizes the equipment, field procedures, and interpretation methods used for the determination of the depth, thickness and the seismic velocity of subsurface soil and rock or engineered materials, using the seismic refraction method. Measurement of subsurface conditions by the seismic refraction method requires a seismic energy source, trigger cable (or radio link), geophones, ...


    By ASTM International

  • GENERAL INTRODUCTION

    GENERAL INTRODUCTION TO TERRA PHYSICS CAPABILITIES THAT INCLUDE SEISMIC (REFRACTION, REFLECTION, MASW, DOWNHOLE VELOCITY, CROSS HOLE VELOCITY), ELECTRICAL (DC RESISTIVITY WITH SWIFT STING INSTRUMENT AND TEM WITH GEONICS EM57), ELECTROMAGNETIC (GEONICS EM-31, EM-34 FOR GREATER PENETRATION), GROUND PENETRATING RADAR (GSSI SIR -3000 SYSTEM WITH ANTENNA FREQUENCIES FROM 120 TO 900 MHZ), AND ...


    By TERRA PHYSICS

  • ASTM D6429 - 99(2011)e1 standard guide for selecting surface geophysical methods

    This guide applies to commonly used surface geophysical methods for those applications listed in Table 1. The rating system used in Table 1 is based upon the ability of each method to produce results under average field conditions when compared to other methods applied to the same application. An “A” rating implies a preferred method and a “B” rating implies an alternate ...


    By ASTM International

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