Estimation of microseismic source parameters by anisotropic waveform inversion
In microseismic data processing, source locations and origin times are usually obtained using kinematic techniques, whereas moment-tensor estimates are typically based on linear inversion of P- and S-wave amplitudes. Waveform inversion (WI), which has been used primarily for high-resolution velocity analysis, has the potential to provide more accurate source parameters along with an improved velocity model by incorporating both phase and amplitude information. The first issue addressed in the thesis is efficient calculation of the gradient of the WI objective function with respect to the model ...
(For more, see "View full record.")