How to Assess the Moment Tensor Inversion Resolution for Mining Induced Seismicity: A Case Study for the Rudna Mine, Poland

Underground exploitation of georesources can be highly correlated with induced seismic activity. In order to reduce the risk and improve mining operations safety, activity is monitored by a dedicated network. Moment tensor inversion powerful method investigate rupture process earthquakes in mines, providing information on geometry earthquake source moment release. Different approaches have been proposed estimate mechanisms, some advantages limitations. One simplest most used methods rely fit polarity amplitude first P wave onsets. More advanced techniques full waveforms their spectra. Here, we test compare focal mechanism estimations for both techniques. assess resolution, built realistic synthetic data, accounting real noise conditions network Rudna copper mine, SW Poland. The mine pertains Legnica-Glógow Copper District, where thousands are detected yearly, representing serious hazard miners infrastructures. We simulate range different processes locations, considering pure double couple, deviatoric tensors magnitudes located panels. Results show that P-wave onset very sensitive network, which limited existing underground infrastructure. On other hand, quality solutions waveform mainly determined strength tremor signal-to-noize ratio. discuss performance provide recommendations toward reliable analysis mines.