Geophysicists reveal new insights into the 'earthquake machine'

The San Andreas Fault Observatory at Depth (SAFOD)—the first underground observatory to provide physical samples and real-time seismological data from deep inside an active fault zone—is yielding surprising new clues about the origin of earthquakes. SAFOD scientists from around the world will discuss these new findings on Dec. 6 at the annual meeting of the American Geophysical Union (AGU) at Moscone Center West in San Francisco.