Theory and Calculation for Displacements and Stresses at an Earthquake Source
Semi-annual rept. no. 1
LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES NY
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The progress report describes the method of calculation of ground motions near an earthquake source, and outlines the research which has led to ten-fold improvements over the previous computational methods. It is shown that surface waves are likely to contribute strongly to near-source ground-motions. A scalar problem is described, in terms of which one may better appreciate the essential difficulties of relating dislocation and traction on a rupturing fault surface.