Coda wave attenuation in Mara Rosa seismic zone
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| Autores: | , , , |
|---|---|
| Formato: | ponencia |
| Fecha de Publicación: | 2013 |
| Descripción: | Small local earthquakes from aftershock sequence in Mara Rosa, Goiás state, Brazil were used to estimate the coda wave attenuation in the frequency band of 1 to 20 Hz. The time-domain coda-decay method of a single backscattering model is employed to estimate frequency dependence of quality factor (Qc) of coda waves modeled using Qc = Q0fη, Q0 is the coda quality factor at a frequency of 1 Hz and η is the frequency parameter. Qc values have been computed at central frequencies and (band) of 1.5 (1-2), 3.0 (2-4), 6.0 (4-8), 9.0 (6-12), 12 (8-16) and 18 (12-24) Hz in the lapse time ranging from 5 to 25 sec in step of 5 seconds. It was determined the functional form Qc = (10.78) f(1.84)) . |
| País: | Repositorio UNA |
| Institución: | Universidad Nacional de Costa Rica |
| Repositorio: | Repositorio UNA |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:https://repositorio.una.ac.cr:11056/24819 |
| Acceso en línea: | http://hdl.handle.net/11056/24819 https://doi.org/10.1190/sbgf2013-369 |
| Palabra clave: | MÉTODOS DE SIMULACIÓN SIMULATION METHODS SISMOLOGÍA SEISMOLOGY |