Robert A. Page David M. Boore 1972 <p>Peak ground accelerations recently recorded within 10-15 km of faulting during moderate-sized earthquakes (m = 4 to 6) are significantly underestimated by many, if not most, of the empirical acceleration-distance relations commonly used in seismic engineering. The recent data show a rapid decrease of peak acceleration with increasing distances (at a rate between r^-1.4 and&nbsp; r^-I.8) beyond 5 to 20 km and suggest a less rapid rate of attenuation closer to the causative fault.</p> application/pdf 10.3133/ofr7243 en U.S. Geological Survey Accelerations near faults that have moved during moderate-sized earthquakes reports