J.C. Roller Mark D. Zoback 1979 <p>A profile of measurements of shear stress perpendicular to the San Andreas fault near Palmdale, California, shows a marked increase in stress with distance from the fault. The pattern suggests that shear stress on the fault increases slowly with depth and reaches a value on the order of the average stress released during earthquakes. This result has important implications for both long- and short-term prediction of large earthquakes.&nbsp;</p> application/pdf 10.1126/science.206.4417.445 en American Association for the Advancement of Science Magnitude of shear stress on the San Andreas fault: Implications of a stress measurement profile at shallow depth article