26 February 2010
Vol 327, Issue 5969

About The Cover

Cover image expansion

COVER High-resolution (0.25 meters per pixel) hillshade map showing the topography of the San Andreas Fault in the Carrizo Plain of California. Two stream channels that bend at the fault have been displaced about 10 meters (lower right) by two earthquakes and 16 meters (upper left) by as many as five earthquakes, including the most recent earthquake in 1857. Blue indicates lower elevations. See pages 1117 and 1119. Image: O. Zielke, J. R. Arrowsmith/Arizona State University; L. Grant Ludwig, S. O. Akiz, G. R. Noriega/University of California, Irvine; topography data gathered by the B4 Project and processed by OpenTopography