The Stanford Ultra-Low Frequency Electromagnetic (ULFEM) Monitoring Project is recording naturally varying electromagnetic signals adjacent to active earthquake faults, in an attempt to establish whether there is any variation in these signals before or after earthquakes.

Our project is collaborative with the U.S. Geological Survey and U.C. Berkeley. Lead scientists are Simon Klemperer (Stanford University), Jonathan Glen (U.S.G.S.) and Darcy Karakelian McPhee (USGS).

Our initial sites are in the San Francisco Bay Area, monitoring different strands of the San Andreas fault system, and Jasper Ridge (JRSC), Marin Headlands (MHDL), and Briones (BRIB). Related sites in the greater San Francisco Bay Area are operated by U.C. Berkeley and by Quakefinder. Seismic data can be obtained from the Northern California Earthquake Data Center.

This site provides access to data from the Stanford-USGS sites JRSC, MHDL and BRIB. Feel free to contact us if you have any questions or comments.



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