1887

Abstract

Summary

This abstract presents a case study where an anisotropic velocity model for surface microseismic monitoring is obtained from travel time inversion using P- and SV-wave arrivals of microseismic events that are observable on the surface records. Additionally, we correct for statics using cross-correlation of the P-wave arrivals of the same events. The calibration of the velocity model proves robust to uncertainties in the locations of the reference events. The comparison to event locations derived with an isotropic velocity model results in negligible differences in the epicentre and comparable depths of events. Finally, the application of static corrections shifts the event locations while increasing the maximum stacked energy, suggesting improvement in location accuracy. The findings emphasize the relative importance of near-surface effects over the importance of anisotropy and heterogeneity for this particular case study.

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/content/papers/10.3997/2214-4609.201601347
2016-05-31
2020-06-07
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References

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