Q126
Which geophysical method was used to detect voids beneath a dam in a case study?
A.
Magnetometer
B.
Electrical resistivity
AnswerC.
Seismic refraction
D.
Gamma-ray logging
Answer: Option B
Solution
Answer: Option B
Solution:
Electrical resistivity imaging revealed voids and seepage paths beneath the dam structure by mapping subsurface resistivity variations.