CPC G01V 1/307 (2013.01) [G01V 2210/121 (2013.01); G01V 2210/1295 (2013.01); G01V 2210/1425 (2013.01)] | 23 Claims |
1. A method for identifying a frequency producing a dominant vibration response of an underground structure, comprising the steps of:
inducing controlled acoustic waves in the structure via ground, the acoustic waves varying over a predetermined frequency range;
measuring vibration response associated with the structure in response to the controlled acoustic waves over the predetermined frequency range, using a measurement device in vibrational communication with the structure;
detecting a dominant vibration response among measurements across all frequencies of the predetermined frequency range; and,
identifying a frequency of the predetermined frequency range which produced the dominant vibration response.
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