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Update 3.8.1 to foci software package

New version (3.8.1) of foci software package has been released recent week. This version brings some new features that will be developed in next months:

– Introduction of inelastic attenuation correction in calculation of full seismic moment tensor.
– Multiple corrections to preferences window.
– Introduction of foci package into github version control system
– Code cleanup.

The polish version of foci website has been also rearranged and refurbished. This is the first step to translate this page into english.

Building up page on The Geysers studies

The Geysers represents a unique site for analysis of induced seismicity. This vapor-dominated geothermal field is located about 120 km north of San Francisco where the geothermal power production is performed for more than 50 years. Currently, The Geysers is the world’s largest geothermal field operated by Calpine and spanning an area of around 78km2 with the nominal capacity of 1517 MW. It is also an area of intensive induced seismic activity, with the largest event reaching magnitude 5.0. The seismicity is recorded with an extensive seismic monitoring networks operated by Lawrence Berkeley National Laboratory, and broadband regional network.

The availaibility of high quality data triggered our interest in understanding seismo-mechanical processes in this reservoir. This resulted in a number of publications, that I decided to gather in one place – The Geysers resesarch page.

New files to download

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.

[ 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.

[ 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) ]