Patent ID: 9086505
Filing Date: 2015-07-21
Classification: G01V

Abstract:
1. A method for calculating in a computing device a corrected temporal variation (dt 1 ) depth or a corrected relative temporal variation (dt 1 /t 1 ) depth of a body wave based on a given wave, the method comprising: receiving raw seismic data recorded with a receiver, wherein the raw seismic data includes recordings for the body wave and the given wave at various times; calculating a first arrival-time variation (dt calculating a second arrival-time variation (dt calculating a first relative temporal variation (dt calculating a second relative temporal variation (dt correcting with the computing device the first relative temporal variation (dt monitoring changes in a target present in a substrate based on the corrected relative temporal variation (dt wherein a body wave is a wave that experiences at least one reflection before being recorded by the receiver, a surface wave is a wave that does not experience any reflection between the source and the receiver, and the given wave is either the body wave or the surface wave.