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Time‐lapse monitoring of velocity changes in Utah
Author(s) -
Kanu Chinaemerem,
Snieder Roel,
Pankow Kristine
Publication year - 2014
Publication title -
journal of geophysical research: solid earth
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.983
H-Index - 232
eISSN - 2169-9356
pISSN - 2169-9313
DOI - 10.1002/2014jb011092
Subject(s) - induced seismicity , geology , seismology , range (aeronautics) , coda , geodesy , basin and range province , fault (geology) , seismic velocity , tectonics , materials science , composite material
The Eastern part of the Basin and Range, extending to the Wasatch fault region, is an actively deforming region characterized by varieties of extensive features and prominent seismicity along the intermountain seismic belt. The present‐day deformation of the intermountain seismic belt and the eastern Basin and Range province motivates an interest in continuous monitoring of the region. In this study we monitor time‐lapse velocity changes within Utah and eastern Nevada using coda waves generated by repeatable explosions. This monitoring characterizes velocity changes within the region from June to September of 2007. We observe, both temporally and spatially, variable velocity changes within the monitored region, with a maximum path average velocity change of 0.2%. This suggests a significant change in the velocity within the region given the short monitoring duration. Correlation of the temporal variation of the average velocity change with strains derived from GPS‐detrended displacements suggests that the velocity change might be driven by the broad deformation within the monitored region.