Since today, the website is running using PHP7.0 engine, meaning increased performance of page loading. That imposed a slight redesign of my website – mostly related to removal of incompatible plugins.
Together with Thomas Goebel and other co-authors we published a paper in Geology on fault roughness in laboratory stick-slip experiments on rock samples.
Goebel, T.H.W., Kwiatek, G., Becker, T.W., Brodsky, E.E. and G. Dresen (2017). What allows seismic events to grow big?: Insights from b-value and fault roughness analysis in laboratory stick-slip experiments. Geology 45 (9): 815-818, DOI: 10.1130/G39147.1 [ Article Page ]
We published a new manuscript in Physical Review Letters on triggering processes in laboratory experiments on rock samples (with implications to natural and induced seismicity of course!)
Davidsen, J., Kwiatek, G., Charalampidou, E.-M., Goebel, T., Stanchits, S., Rueck, M., and G. Dresen. Triggering processes in rock fracture. Phys. Res. Lett. 119, 068501, DOI: 10.1103/PhysRevLett.119.068501. [ Article Page ]
Abstract: We study triggering processes in triaxial compression experiments under a constant displacement rate on sandstone and granite samples using spatially located acoustic emission events and their focal mechanisms. We present strong evidence that event-event triggering plays an important role in the presence of large-scale or macrocopic imperfections, while such triggering is basically absent if no significant imperfections are present. In the former case, we recover all established empirical relations of aftershock seismicity including the Gutenberg-Richter relation, a modified version of the Omori-Utsu relation and the productivity relation—despite the fact that the activity is dominated by compaction-type events and triggering cascades have a swarmlike topology. For the Gutenberg-Richter relations, we find that the b value is smaller for triggered events compared to background events. Moreover, we show that triggered acoustic emission events have a focal mechanism much more similar to their associated trigger than expected by chance.
The paper on spatial variations of seismic Gutenberg-Richter b-value along the North Anatolian Fault Zone have been recently published in the Tectonophysics.
Raub, C., Martínez-Garzón, P., Kwiatek, G., Bohnhoff, M., and G. Dresen (2017). Variations of seismic b-value at different stages of the seismic cycle along the North Anatolian Fault Zone in northwestern Turkey. Tectonophysics 712-713, 232-248, DOI: 10.1016/j.tecto.2017.05.028. [ Article Page ]
Thanks to the policy of BSSA, SRL and PRL, I could upload some published versions of the manuscripts I (co-) authored to induced.pl website. This includes the following papers:
Kwiatek, G., P. Martínez-Garzón, and M. Bohnhoff (2016). HybridMT: A MATLAB/Shell Environment Package for Seismic Moment Tensor Inversion and Refinement. Seismol. Res. Lett. 87, 964–976, DOI: 10.1785/0220150251. [ Article page ] [ Download Full Text ][ 10.1785/0220150251. [ Article page ] [ Download Full Text ] ">Download PDF document (1.75 MB) ]
Martínez-Garzón, P., G. Kwiatek, M. Ickrath, and M. Bohnhoff (2014). MSATSI: A MATLAB Package for Stress Inversion Combining Solid Classic Methodology, a New Simplified User- Handling, and a Visualization Tool, Seismol. Res. Lett. 85, no. 4, 896–904, DOI: 10.1785/0220130189. [ Article page ] [ Download Full Text (SRL) ] [ Download from Google Drive ][ 10.1785/0220130189. [ Article page ] [ Download Full Text (SRL) ] [ Download from Google Drive ] ">Download PDF document (9.92 MB) ]
Davidsen, J., and G. Kwiatek (2013). Earthquake interevent time distribution for induced micro-, nano- and picoseismicity, Phys. Rev. Lett. 110, 068501, DOI: 10.1103/PhysRevLett.110.068501.[ Download PDF document (725.13 KB) ]
Davidsen, J., G. Kwiatek, and G. Dresen (2012). No Evidence of Magnitude Clustering in an Aftershock Sequence of Nano- and Picoseismicity, Phys. Rev. Lett. 108, 038501, doi 10.1103/PhysRevLett.108.038501.[ Download PDF document (146.28 KB) ]
Kwiatek, G., K. Plenkers, and G. Dresen (2011). Source Parameters of Picoseismicity Recorded at Mponeng Deep Gold Mine, South Africa: Implications for Scaling Relations, Bull. Seismol. Soc. Am. 101, no. 6, 2592–2608, doi 10.1785/0120110094.[ Download PDF document (2.88 MB) ]
Plenkers, K., D. Schorlemmer, and G. Kwiatek (2011). On the Probability of Detecting Picoseismicity, Bull. Seismol. Soc. Am. 101, no. 6, 2579–2591, doi 10.1785/0120110017.[ Download PDF document (771.19 KB) ]
Naoi, M., M. Nakatani, Y. Yabe, G. Kwiatek, T. Igarashi, and K. Plenkers (2011). Twenty thousand aftershocks of a very small (M2) earthquake and their relations to the mainshock rupture and geological structures, Bull. Seismol. Soc. Am. 101, no. 5, 2399–2407, doi 10.1785/0120100346.[ Download PDF document (837.38 KB) ]
Kwiatek, G., K. Plenkers, M. Nakatani, Y. Yabe, G. Dresen, and J. Group (2010). Frequency-Magnitude Characteristics Down to Magnitude -4.4 for Induced Seismicity Recorded at Mponeng Gold Mine, South Africa, Bull. Seismol. Soc. Am. 100, no. 3, 1167–1173, doi 10.1785/0120090277.[ Download PDF document (791.92 KB) ]