Applied Geophysics (0305372)Course ContentsI.IntroductionApplied Geophysics? Classifications; Development; Application: Exploration for oil & gas, underground water, ore deposits, other applications.II.Seismic RefractionImportance of seismic exploration; Principles of application; The seismic refraction technique; Travel-Time equations for seismic refractions from subsurface horizontal layers of constant velocities, Dipping and faulted layers; Linear increase of velocity with depth; Mathematical treatments and field applications.III.Seismic Reflection Reflection Vs. Refraction; Main Principles; Field techniques; Travel-Time equations of subsurface reflections; Enhancement of seismic reflection data; Processing techniques; Geological and geophysical interpretation of seismic reflection data; Applications.IV.Electrical & Electromagnetic MethodsClassification; Electrical properties of rocks; The electrical resistivity method and its importance in geo-exploration; Field techniques; Vertical electrical sounding & Horizontal trenching; Quantitative interpreatation of resistivity data; Field & Lab applications.V.Gravity & Magnetic MethodsPotential field methods and their importance in exploration; The geomagnetic & geo-gravitational fields and their variations; Field techniques; Reduction of gravity & magnetic data; Qualitative & Quantitative interpretation of gravity and magnetic data; Field applications.VI.Other Geophysical MethodsThe different techniques and their importance; Field surveys; Data collection; processing and interpretation.Suggested Report Topics1.The importance of Applied Geophysics in exploration for either: a) Oil & gas, OR b) Underground Water, OR c)Ore Deposits.2.Processing of seismic reflection data.3.The importance of “either method” in geo-exploration.References1.Dobrin, M. B., 1981, Introduction to geophysical prospecting, 3rd edt., McGraw-Hill, Aukland.2.Sharma, P. V., 1986, Geophysical methods in geology, 2nd edt., Prentice Hall, New Jersey.3.Nettleton, L. L., 1976, Gravity and magnetics in oil prospecting, McGraw-Hill, New York.4.Blakely, R. B., 1995, Potential theory in gravity & magnetic applications, Cambridge Univ. Press.2