What is the role of the base station in a magnetic survey?
A. Collect seismic data
B. Provide electric current
C. Record daily magnetic variations
D. Calibrate seismic velocity
Answer: Option C
Solution (By Examveda Team)
In magnetic surveys, a base station records diurnal changes in the Earth's magnetic field for correction of mobile station data.This Question Belongs to Geological Engineering >> Geophysical Methods In Engineering
Which geophysical method uses electrical resistivity to study subsurface layers?
A. Seismic reflection
B. Electrical resistivity method
C. Gravity method
D. Magnetic method
What is the primary physical property measured in the seismic refraction method?
A. Electrical resistivity
B. Density
C. Seismic wave velocity
D. Magnetic susceptibility
The magnetic method in geophysics is used to detect:
A. Density contrasts
B. Magnetic anomalies
C. Water table depth
D. Pore pressure
Ground Penetrating Radar (GPR) is most effective in detecting:
A. Subsurface water
B. Magnetic minerals
C. Airborne pollutants
D. Earthquakes
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