Source mechanism of the ultrasonic transducer located in anisotropic region is being evaluated by moment tensor inversion with full waveform seismograms, which are collected from the physical modeling experiment designed to simulate the microseismic survey in the laboratory. Two inversions are carried out for layered VTI media by either using only SV-wave or both P- and SV-wave. The result suggests the transducer source can be described by two dipole forces. Both wave modes have to be involved in the inversion to avoid biased result.
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