Regionalization of crustal Q in the continental United States
Abstract
Recent studies indicate that there are strong lateral variations of anelastic attenuation of seismic waves beneath the continental United States. In this study a detailed crustal Qo map for the entire continental United States is obtained. The method is based on a scattering model to explain the coda waves of local and near regional earthquakes. These coda Qo values are in good agreement with Q of Lg-waves. Using 25 WWSSN and 27 LRSM stations and over 250 local earthquakes, short epicenter-station paths were selected which give a maximum coverage to the entire continental United States. Based on a single-scattering model, a generalized inversion method is developed and used to obtain Qo values.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1981
- Bibcode:
- 1981PhDT........73S
- Keywords:
-
- Earth Crust;
- Earthquakes;
- Seismic Waves;
- Crustal Fractures;
- Scattering;
- Tectonics;
- Geophysics