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 ]
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 ]
We published another paper on induced seismicity, this time related to the clustering properties of induced seismicity observed in a couple of hydrothermal reservoirs. Here is the reference:
Martínez-Garzón, P., I. Zaliapin, Y. Ben-Zion, G. Kwiatek, and M. Bohnhoff (2018). Comparative Study of Earthquake Clustering in Relation to Hydraulic Activities at Geothermal Fields in California. Journal of Geophysical Research: Solid Earth, 123. DOI: 10.1029/2017JB014972 [ Article Page ]