JGF paper - limits on detection and analysis of small earthquakes

Paper on theoretical limits on detection and analysis of small earthquakes

Finally, the paper entitled “Theoretical limits on detection and analysis
of small earthquakes” has been published in Journal of Geophysical Research: Solid Earth. In this paper we investigate theoretical limits on detection and reliable estimates of source characteristics of small earthquakes using synthetic seismograms for shear/tensile dislocations on kinematic circular ruptures and observed seismic noise and properties of several acquisition systems (instrument response, sampling rate). The results presented in the manuscript provide guidelines on detection of small events in various geological environments, along with information relevant to reliable analyses of earthquake source properties.

Reference:

Kwiatek, G., and Y. Ben-Zion (2016), Theoretical limits on detection and analysis of small earthquakes, Journal of Geophysical Research-Solid Earth, 121, doi:10.1002/2016JB012908.
post_hybridmt_rev

SRL paper on hybridMT package

Finally, the paper on hybridMT MATLAB/shell environment package for seismic moment tensor inversion and refinement is out! The paper, published in Seismological Research Letters – Electronic Seismologist is freely available for download:

Grzegorz Kwiatek, Patricia Martinez-Garzon and M. Bohnhoff (2016). HybridMT: A MATLAB/shell environment package for seismic moment tensor inversion and refinement. Seismol. Res. Lett. 87 (4), DOI: 10.1785/0220150251.. (1.8 MiB)

 

Paper by Stierle et al.

On acoustic emissions, moment tensors and anisotropy

We have published a paper related to the analysis of seismic moment tensors of acoustic emission data with a special focus on effects of rock anisotropy on resulting moment tensors.

Stierle, E., V. Vavryčuk, G. Kwiatek, E.-M. Charalampidou, and M. Bohnhoff (2016). Seismic moment tensors of acoustic emissions recorded during laboratory rock deformation experiments: sensitivity to attenuation and anisotropy, Geophysical Journal International 205, no. 1, 38–50, doi 10.1093/gji/ggw009.

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post_jgr_longterm_rev

Two new papers on Induced Seismicity

We just published two new papers related to analysis of induced seismicity. First paper discusses the effects of long-term fluid injection on induced seismicity parameters and maximum likely magnitude at The Geysers geothermal field. In the second paper we perform the statistical analysis of couple of induced seismicity datasets and discuss the violations of Gutenberg-Richter relation in anthropocentric seismicity.

References:

  • Urban, P., S. Lasocki, P. Blascheck, A. F. do Nascimento, N. Van Giang, and G. Kwiatek (2015). Violations of Gutenberg–Richter Relation in Anthropogenic Seismicity, Pure Appl. Geophys. 1–21, DOI: 10.1007/s00024-015-1188-5. [ 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, (submitted), DOI: 10.1002/2015JB012362. [ Article Page ]