Off the rugged north coast of California, one of the most seismically volatile corners of the United States is yielding a new ...

California’s most dangerous faults are not only defined by the headline grabbing magnitude 7 shocks that topple freeways and rupture gas lines. Deep below the surface, swarms of tiny earthquakes, some ...

Tiny earthquakes reveal hidden fault structures beneath Northern California, reshaping understanding of regional earthquake risks and plate tectonics.

“If we don’t understand the underlying tectonic processes, it’s hard to predict the seismic hazard,” said co-author Amanda Thomas, professor of earth and planetary sciences at UC Davis. Three of the ...