Creep and Strain Accumulation on the Central San Andreas Fault

GPS velocities along the Central San Andreas Fault relative to station KNOB. Green triangles are recently added HPGN sites; velocities should be available for these sites within the next few months.

Project Summary We are using campaign and continuous GPS data from the BAVU dataset, as well as stacked ERS1 & ERS2 interferograms to improve our knowledge of the regional deformation field and creep rates on the Central San Andreas fault system. Some of the current questions we hope to answer include: How much of these faults is creeping and how much is locked? What kinds of fault geometries (dip, locking depth) are required by our datasets? and What kind of fault zone rheologies are required?

Tools Trimble 5700 GPS Receivers, 4-wheel drive vehicle
GAMIT/GLOBK data processing software

Geographic Location Monterey Bay Area/Santa Cruz Hills/Salinas Valley

Group Members Involved Ingrid Johanson <Email> <Personal Web Site>
Frederique Rolandone, Roland Bürgmann

Project Duration 1989-present

More Information < Photos from our 2001 campaign >
< Ingrid's 2003 AGU Poster >