In-situ measurements of seismic velocity at 22 locations in the Los Angeles, California region

Abstract

For these depth Intervals with measurements of density (p), the shear modulus (SHEAR NOD. M) and bulk modulus (BULK MOD, K) is calculated (tables 23-44) using the linear elastic equation and -in Poisson's ratio (cr) is calculated (tables 23-44) using or s SUMMARY This report summarizes seismic velocities measured in the near surface geologic materials at 22 locations in the Antelope Valley and Los Angeles, California areas. S-wave and P-wave measurements were made at 2 1/2 m intervals in drill holes to a depth of 30 m. lieologic logs were compiled by continuously monitoring drill cuttings and by analysis of cored samples.