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High resolution measurements of aseismic slip (creep) on the San Andreas fault system from Parkfield to San Francisco Bay area; 1966 to the present

Dates

Publication Date
Start Date
1966

Citation

John Langbein, 2015, High resolution measurements of aseismic slip (creep) on the San Andreas fault system from Parkfield to San Francisco Bay area; 1966 to the present: U.S. Geological Survey: Menlo Park, CA, http://earthquake.usgs.gov/monitoring/deformation/data/download/table.php.

Summary

These data provide measures of aseismic slip (creep) at approximately 40 sites located on the San Andreas, Hayward, and Calaveras faults in Central California from Point Pinole located in the San Francisco Bay area to south of Parkfield, California. The earliest measurement of creep followed the 1966 Parkfield earthquake. Currently, we maintain approximately 20 creepmeters and those data are uploaded to the web daily. The data provided at http://earthquake.usgs.gov/monitoring/deformation/data/download/table.php include measurements for sites that have been abandoned. The table provides the location of each creepmeter, and where present, notes that might be relevant to interpreting the data from each instrument.

Contacts

Point of Contact :
John Langbein
Distributor :
John Langbein
Metadata Contact :
John Langbein
Originator :
John Langbein
Publisher :
U.S. Geological Survey

Attached Files

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High_resolution_measurements_of_aseismic_slip_creep_on_the_San_Andreas_fault_system_from_Parkfield_to_San_Francisco_Bay_area_1966_to_the_present.xml
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Purpose

The data were collected to measure slip, in near realtime, at selected points on the San Andreas fault system. Measurements were made in 10 minute intervals and transmitted immediately via the GOES satellite to Menlo Park where it was processed and stored. Early measurements indicated that creep was episodic rather than a steady-state process. Early research looked for correlations between transient creep and local seismicity. In addition, some theoretical models and antidotal evidence suggested that creep rate would accelerate prior to large earthquakes. This led to the expansion of the creepmeter network on the Parkfield reach of the San Andreas.

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