Geophysics GPh3202: Electromagnetic Methods

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Electromagnetic methods are categorized into which two main categories?

Land-based and Airborne

Active and Passive (correct)

Electrical and Magnetic

Frequency-domain and Time-domain

What is the common measured parameter in Electromagnetic and Electric methods?

Electromagnetic waves

Frequency range

Electrical conductivity (correct)

Magnetic field

Which of the following is NOT a type of survey method used in Electromagnetic methods?

Marine

Land-based

Airborne

Space-based (correct)

In Frequency-domain Electromagnetic (FEM) methods, what is the relationship between the distance between the transmitter and receiver coils and the depth range under investigation?

Directly proportional Signup and view all the answers

What type of measurements can be conducted using Electromagnetic methods?

Mapping, profiling, and sounding Signup and view all the answers

In TEM, what is the level of inquiry closely correlated with?

Loop size, recording time interval, and shut-off time Signup and view all the answers

What is an advantage of EM methods over resistivity surveys?

Less sensitive to conductive uppermost layer Signup and view all the answers

What is a characteristic of EM methods that allows them to be used for a wider range of applications?

Does not require direct contact with the ground Signup and view all the answers

Which of the following is NOT an application of EM methods?

Weather forecasting Signup and view all the answers

What characteristic of EM methods allows them to be used in areas with highly resistive or conductive uppermost layers?

Ability to counter survey difficulties with land models Signup and view all the answers

Geophysics GPh3202: Electromagnetic Methods

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Questions and Answers

Electromagnetic methods are categorized into which two main categories?

What is the common measured parameter in Electromagnetic and Electric methods?

Which of the following is NOT a type of survey method used in Electromagnetic methods?

In Frequency-domain Electromagnetic (FEM) methods, what is the relationship between the distance between the transmitter and receiver coils and the depth range under investigation?

What type of measurements can be conducted using Electromagnetic methods?

In TEM, what is the level of inquiry closely correlated with?

What is an advantage of EM methods over resistivity surveys?

What is a characteristic of EM methods that allows them to be used for a wider range of applications?

Which of the following is NOT an application of EM methods?

What characteristic of EM methods allows them to be used in areas with highly resistive or conductive uppermost layers?

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