Leptokaropoulos, K., M. Staszek, S. Lasocki, P. Martínez-Garzón, and G. Kwiatek (2018). Evolution of seismicity in relation to fluid injection in the North-Western part of The Geysers geothermal field, Geophysical Journal International 212, no. 2, 1157–1166, DOI: 10.1093/gji/ggx481. [ Article Page ]
Kwiatek, G., P. Martínez-Garzón, G. Dresen, M. Bohnhoff, H. Sone, and C. Hartline (2015). Effects of long-term fluid injection on induced seismicity parameters and maximum magnitude in northwestern part of The Geysers geothermal field, J. Geophys. Res. 120, DOI 10.1002/2015JB012362. [ Article Page ]
We published a new paper in the Journal of Geophysical Research: Solid Earth related to the hydraulic fracture experiments performed in 2015 in Äspö Hard Rock Laboratory, Sweden. Here are the highlights:
- We analyze source characteristics of picoseismicity (moment magnitudes smaller than -3.5!) related to hydraulic stimulations in Äspö Hard Rock Laboratory, Sweden.
- We show that spatio-temporal seismicity migration is controlled by changes in hydraulic (pressure times volume) energy.
- We present that total radiated seismic energy is very low with respect to injected volume, and increases with hydraulic energy rate.
Kwiatek, G., Martínez-Garzón, P., Plenkers, K., Leonhardt, M., Zang, A., Specht, S., et al. (2018). Insights Into Complex Subdecimeter Fracturing Processes Occurring During a Water Injection Experiment at Depth in Äspö Hard Rock Laboratory, Sweden. Journal of Geophysical Research: Solid Earth, DOI: 10.1029/2017JB014715. [ Article Page ]
Stephan Bentz published paper entitled “Sensitivity of Full Moment Tensors to Data Preprocessing and Inversion Parameters: A Case Study from the Salton Sea Geothermal Field”. The paper presents the results of investigation of mechanisms of approximately 80 small seismic events using two full seismic moment tensor inversion routines: the full waveform inversion and hybridMT code. The paper appeared in the Bulletin of Seismological Society of America.