Currently browsing tag

source parameters

Source Parameters

Paper in BSSA on focal mechanism of small earthquakes from the Salton Sea

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.

Reference:

Bentz, Stephan, P. Martínez-Garzón, G. Kwiatek, M. Bohnhoff, and J. Renner (2018). Sensitivity of Full Moment Tensors to Data Preprocessing and Inversion Parameters: A Case Study from the Salton Sea Geothermal Field, Bull. Seismol. Soc. Am. DOI: 10.1785/0120170203.

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.

Paper on scaling relations in volcanic environment

Together with Rebecca Harrington (McGill University in Montreal) and Seth Moran (USGS) we published a paper in Journal of Geophysical Research. The paper is related to analysis of seismic data from Mt. St. Helens and discusses predominantly the scaling relations of source parameters derived from mesh spectral ratio technique:

Reference:

Harrington, R. M., Kwiatek, G., and S. C. Moran (2015). Self-similar rupture implied by scaling properties of volcanic earthquakes occurring during the 2004-2008 eruption of Mount St. Helens, Washington. J. Geophys. Res. DOI: 10.1002/2014JB011744 [ Article Page ]

Article on moment tensors and b values from acoustic emissions

Finally, the paper on seismic moment tensors and b-values calculated for acoustic emissions has been published in Geophysical Research Letters. Here is the link and reference to the paper:

Kwiatek, G., Goebel, T., and G. Dresen (2014). Seismic moment tensor and b value variations over successive seismic cycles in laboratory stick-slip experiments. Geophys. Res. Lett. 41, DOI: 10.1002/2014GL060159. [ Article page ]