203 6. The use of passive seismic methods for Geothermal exploration and monitoring Another example of geothermal areas characterization through attenuation assessment can be found in the work by Antayhua-Vera (2017). Quality factors were computed using the coda of a collection of seismic events to derive coda attenuation (Qc) maps, at multiple frequencies (i.e. probing different depth of the medium). In their interpretation, the authors relate high Qc values (low attenuation) with area of high permeability (Figure 6.12). Figure 6.12 Modified after Antayhua-Vera (2017). Iso-maps of coda quality factor (Qc) values at the geothermal field of Tres Virgenes, Mexico.
RkJQdWJsaXNoZXIy NjA3NzQ=