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Fityk peak seperation
Fityk peak seperation














Oral Presentation at AGU Fall Meeting 2012. Correlation of peak dynamic and static coulomb failure stress with seismicity rate change after the M7.2 El Mayor-Cucapah earthquake. Peak dynamic stress change (in bars) calculated from CVM-4 for the April 4 Mw7.2 El Mayor- Cucapah earthquake, rotated onto a strike of 310 degrees, corresponding to the rupture of the Mw 5.72 Jevent (epicenter depicted by the white star, mainshock by black star). Finally, we searched for threshold levels of dCFS and peak dCFS(t) that may be required to trigger earthquakes/aftershocks of different magnitude that might provide clues to earthquake prediction we found a possible peak dCFS(t) threshold value of 0.7 bars for aftershocks (>4000) in regions of positive static stress. However, both CVMs produce similar peak dCFS(t) lobes near San Diego. In particular, CVM-H generates a lobe of (directivity-induced) large peak dCFS(t) between the Elsinore and San Jacinto Faults toward the Los Angeles basin not present in the results from CVM-4. For regionally rotated stresses we find that while the dCFS values are very similar for the two CVMs, the corresponding peak dCFS(t) values are noticeably different. The stress changes are rotated onto the focal mechanism of the JMw5.7 aftershock as well as onto optimum oriented planes (King, 1994).

fityk peak seperation

We perform this analysis using both CVM-4 and CVM-H, investigating, in particular, which model better describes the increased seismicity NW of the rupture. Keywords: curve fitting Pawley refinement. Improved spectral resolution was evaluated based on several criteria including the separation of overlapping. Werst applied the methods to varied synthetic spectra, each consisting of nine overlapping Voigt prole peaks. In particular, it enables Pawley refinement of powder diffraction data and size-strain analysis. blind deconvolution, andthe general-purpose peaktting program Fityk. It specializes in fitting a sum of bell-shaped functions to experimental data.

fityk peak seperation

Fityk peak seperation software#

We find that the correlation parameter is greater for peak dCFS(t) compared to dCFS and highest for periods after the mainshock of longer than 1 week for dCFS, and a maximum at 1 month for peak dCFS(t). Fityk is portable, open-source software for nonlinear curve fitting and data analysis. We employ a modified cross correlation between the seismicity rate change (for both undeclustered and declustered catalogs) and both dCFS and peak dCFS(t) in time and space (as used by Kilb et.

fityk peak seperation

Specifically, we use a dynamic rupture model with observational constraints for the event simulated in the SCEC 3D CVM4.0 (Roten and Olsen, 2009) to calculate the changes in the resulting static (dCFS) and dynamic Coulomb failure stress, parameterized by its largest positive amplitude (peak dCFS(t)). We have investigated the relation between the April 4 Mw7.2 El Mayor-Cucapah earthquake and seismicity rate changes in southern California and northern Baja California in the months following the mainshock. Published December 2012, SCEC Contribution #1785 Correlation of peak dynamic and static coulomb failure stress with seismicity rate change after the M7.2 El Mayor-Cucapah earthquake Kyle B.














Fityk peak seperation