The twenty field trip guides in this volume represent the work of earthquake professionals from the earth science, engineering, and emergency management communities. The guides were developed to cross the boundaries between these professions, and thus reflect this diversity: trips focus on the built environment, the effects of the 1906 earthquake, the San Andreas fault, and other active faults in northern California.

An integrated set of studies describing methods for evaluating geologically controlled earthquake hazards as a basis for reducing future losses.