GP 402: Gravity and Magnetic Methods
Syllabus
Gravitational field of the Earth; Potential field equations and derivation; Densities of rocks and their determination; Gravity instruments for Geophysical exploration; Gravity effect over different types of geological structures; Anomalies of gravity field – Free-Air, Bouguer and Isostatic anomaly; Processing of Gravity data; Geophysical interpretation of gravity anomalies; Delineation of gravity anomaly parameters using signal processing tools; Shape of Earth; Moments of inertia, Geoid, Isostasy, Earth rotation, Earth structure; Exploration for resources; Geodetic measurements of crustal motion. Principles of magnetic methods; Instruments for magnetic measurements for geophysical Exploration; Principles of various magnetic instruments; Relation between gravity and magnetic methods; Magnetic effect over different types of geological structures; Data Processing of field magnetic observations; Delineation of magnetic anomaly parameters using signal processing tools; Introduction to airborne magnetic surveys.
Texts/References
- R.J. Lillie, Whole Earth Geophysics: An introductory book for geologists and geophysicists, Prentice Hall, 1998
- I.V. Radhakrishna Murthy, Gravity and Magnetic Interpretation in Exploration Geophysics, Geol. Soc. India Publication, Bangalore, 1998
- W.M. Telford, L.P.Geldart, and R.E.Sheriff, Applied geophysics, Cambridge Univ.Press 1990
- M.B.Dobrin, and C.H. Savit, Introduction to geophysical prospecting, McGraw Hill, 1988
- E. S. Robinson and C. Coruh, Basic Exploration Geophysics, J. Wiley and Sons, 1988
- B.S.R. Rao and I.V.R. Murthy, Gravity and Magnetic Methods of prospecting, Arnold – Henniman Publishing company, New Delhi, 1978
- L.L. Nettleton, Gravity and Magnetics in Oil Prospecting, McGraw-Hill, 1976