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Handbook 1997 : Faculty of Science : Earth Sciences

625-392 Electrical and Electromagnetic Field Geophysics

Note:

Geophysics as a separate third year teaching component will not be offered in 1998 and following years.

Credit Points:

16.5

Coordinator:

Dr L Thomas

Prerequisite/s:

Earth Sciences 625-101; Physics 640-121 + 640-122 (before 1996: 640-120), 640-141 + 640-142 (before 1996: 640-140) or 640-161 + 640-162 (before 1996: 640-160); Mathematics 618-231 or 618-232.

Timetable:

Semester 2

Contact:

26 lectures (two a week), 26 hours (two hours a week) of practical work, 3 days of field work

Objectives:

On completion of this subject, students should:

Comprehend:

  • how elementary potential field theory is used to predict the effect at the surface of different electrical properties of rocks in the Earth;

Have developed:

  • skills in applying this knowledge to interpret surface observations in terms of the distribution of rocks in the subsurface;

  • geophysical skills through practical experience in the acquisition and manipulation of electrical and electromagnetic field data;

Appreciate:

  • the importance of rational, critical, and independent thought in Geology and Geophysics.

Content:

Electrical properties of rocks; 'direct-current' electrical methods (sounding and profiling); electromagnetic wave propagation in rocks; modelling of electromagnetic responses to 2D and 3D resistivity variations; inversion and interpretation of electrical-method data. The use of geophysical equipment for electrical and electromagnetic data acquisition. Inversion and interpretation of data obtained from such systems. Use of physical and computing systems for modelling of electrical and electromagnetic responses.

Assessment:

A 3-hour theory examination or a 2-hour theory examination and one or two essays of up to 1000 words each. Laboratory work will be continuously assessed. A report on the field work may be required.

Prescribed Texts:

  • Telford W M, Applied Geophysics, pb ed. CUP.
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Handbook 1997 : Faculty of Science : Earth Sciences 
Status:                   OFFICIAL 1997
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Copyright © University of Melbourne 1997.