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This
course covers the basics of electrical and electromagnetic
(EM) methods in applied geophysics. The goals are
to understand the theoretic basis, practical application,
and data interpretation techniques of different
electrical and electromagnetic methods commonly
used in exploration, environmental, and groundwater
problems. The course consists of two sections. In
the first, we begin with the theory of electric-current
field in conductive media. We then use it to discuss
detection, mapping, and imaging methods that utilize
various natural electrical fields, artificial direct
current field, or induced polarization effect. In
the second part, we first review the theory of electromagnetic
induction and then use it to study EM methods for
conductivity mapping and imaging based on both frequency-
and time-domain measurements. We will emphasize
field acquisition procedure, data processing, and
data interpretation techniques within the context
of the above-mentioned areas of application. |
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The
class will cover the listed topics below. The weekly
schedule is a guideline that we will follow as closely
as possible. However, additional auxiliary materials
will be covered as needed, and the actual progress
of the class will be slightly different.
Week - 1: Introduction: historical
review, and rock conductivity
Week - 2: Electric current field
in conductive media
Week - 3: Direct detection methods
(mise-á-la-masse and SP)
Week - 4: Mapping methods
Week - 5: Vertical electrical sounding
Week - 6: Imaging methods
Week - 7: Imaging methods
Week - 8: Induced polarization
Week - 9: EM induction theory
Week - 10: EM induction theory
Week - 11: Time-domain EM methods
Week - 12: Time-domain EM methods
Week - 13: Airborne TEM
Week - 14: Frequency-domain EM
methods
Week - 15: Frequency-domain EM
methods
Week - 16: Future directions
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