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Lower bounds for peak horizontal strong-motion amplitudes

DEPARTMENT OF APPLIED MECHANICS AND ENGINEERING SCIENCES UNIVERSITY OF CALIFORNIA AT SAN DIEGO, LA JOLLA, CALIFORNIA 92093

Abstract

Lower bounds for peak horizontal strong-motion amplitudes (acceleration, velocity, and displacement) as a function of local magnitude and distance to the causative fault are presented. These lower bounds result from the fact that the peak amplitudes of motion at a site must exceed certain minimum values for the response of a Wood-Anderson seismograph located at the same site to be consistent with the assigned local magnitude. The lower bounds obtained require high peak accelerations and velocities in the proximity of the source of major earthquakes. In particular, for M_L = 7.0 and = 10 km, the peak horizontal acceleration would have to exceed 0.69 g while the peak velocity would have to exceed 103 cm/sec.

This article has been cited by other articles:

				J. ENRIQUE LUCO A note on near-source estimates of local magnitude Bulletin of the Seismological Society of America, June 1, 1982; 72(3): 941 - 958. [Abstract] [PDF]