Syllabus
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Course Code: GP-204 Course Name: Geophysical Fields & Waves |
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| MODULE NO / UNIT | COURSE SYLLABUS CONTENTS OF MODULE | NOTES |
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| 1 | Potential Field Theory: Introduction to Geophysical fields; Inverse square law of field: Gravity, Magnetostatic and electrostatic, Green’s theorem and Green’s functions, Potential due to an arbitrary source distribution, continuation of potential fields, Dirichlet and Neumann problems. |
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| 2 | Thermal Conduction in Earth Heat conduction equation; effect of advection; time scale of conductive heat flow;calculation of simple geotherms in continents; Geological applications of heat conduction in semi-infinite half space: (i) penetration of external heat into the earth due to periodic variation of surface temperature, (ii) instantaneous heating or cooling of semi-infinite half space and its application to cooling of oceanic lithosphere and (iii) thermal and subsidence history of sedimentary basins, Age of Earth on the basis of cooling. |
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| 3 | Wave Theory Introductory remarks about seismic and electromagnetic waves, Elastic Waves: Analysis of stress and strain, properties of equilibrium and motion in terms of stresses/displacements for infinitesimal and finite deformation, Generalised Hook’s Law, Isotropy and Anelasticity. Electromagnetic Waves: Maxwell’s equations, constitutive relations, Plane electromagnetic waves in dielectric and conductor. |
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| 4 | Electromagnetic method Principles of EM prospecting, various EM methods, passive source and active source methods, theory of EM induction; elliptical polarization, Airborne electromagnetic survey. Telluric methods: Theory of telluric method, field procedure and method of measurement, analysis of telluric field data, Magnetotelluric method, processing and interpretation of MT data. |
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