Abstract
Large earthquakes change the stress on faults. This can either accelerate or decelerate deep fault creep, as suggested by changes in tremor activity rates. Analyzing tremor data from the San Andreas Fault in central California, Shelly and Johnson found that the 2003 San Simeon earthquake, with a magnitude of 6.5, created a “stress shadow” north of Parkfield, causing tremors to stop abruptly there for about a month, while tremors south of Parkfield continued. On the other hand, tremors increased sharply following the 2004 magnitude 6.0 Parkfield earthquake. The authors examined the spatial and temporal variability of postearthquake effects on the San Andreas Fault and noted a depth dependence of tremor recurrence patterns. The study provides new information on the properties of these sections of the fault as well as new insight into how earthquakes affect stress on a fault and deep fault motion. (Geophysical Research Letters, doi:10.1029/2011GL047863, 2011)
Sign-in/Register to access full text options 
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.
