plate movement causes earthquakes in the san andreas fault.
plate movement causes earthquakes in the san andreas fault.
what causes earthquakes in the san andreas fault?
plate movement
a 2008 paper, studying past earthquakes along the pacific coastal zone, found a correlation in time between seismic events on the northern san andreas fault and the southern part of the cascadia subduction zone (which stretches from vancouver island to northern california). scientists believe quakes on the cascadia subduction zone may have triggered most of the major quakes on the northern san andreas within the past 3,000 years. the evidence also shows the rupture direction going from north to south in each of these time-correlated events. however the 1906 san francisco earthquake seems to have been the exception to this correlation because the plate movement was moved mostly from south to north and it was not preceded by a major quake in the cascadia zone.
san andreas fault
section::::observatories.:san andreas fault observatory at depth (safod).









































the san andreas fault observatory at depth (safod) consists of a main borehole that cuts across the active san andreas fault at a depth of approximately 3 km and a pilot hole about 2 km southwest of san andreas fault. data from the instruments installed in the holes, which consist of geophone sensors, data acquisition systems, and gps clocks, as well as samples collected during drilling, will help to better understand the processes that control the behavior of the san andreas fault.









































section::::data products.
earthscope