Abstract
We calculate the source parameters and attenuation from earthquakes recorded near the Itoiz dam, from 2004 to 2009, with magnitudes ranging between 1.2 and 5.2. We use a Genetic Algorithm in order to fit the three-component P-wave spectra with the spectral level, corner frequency, and attenuation factor as searching parameters. The obtained moments range from 1.72 × 1011 to 2.65 × 1015 Nm, the radii span from 0.09 to 1.00 km, and the stress drops vary from 0.006 to 29.462 MPa. The maximum value for the Q attenuation factor is 794, and the minimum value is 53. We find a good agreement between empirical and theoretical relationships between moment and magnitude. There seems to be a breakdown of self-similarity, but it could be due to the method used. We group the data by means of a Self-Organizing Map and the clusters found are related by their magnitude, and not by other considerations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
