FACTORS AFFECTING SEISMIC AMPLITUDES*

Publisher Website
Google Scholar
Abstract
The amplitude of seismic energy varies over a tremendous range. Some of the factors responsible for such variation do not contain subsurface information; these include source strength and coupling, geophone sensitivity, array directivity, instrument balance, scattering in the near‐surface, for example. Others depend on subsurface factors but do not convey information about lithology or hydrocarbon accumulation in a form from which we are able to extract it; these include spherical divergence, ray‐path curvature, loss in transmission through intervening reflectors, peg‐leg multiples, reflector rugosity, and curvature. The amplitude‐governing factors we are primarily interested in are reflection coefficient, the interference of reflections from the top and base of a sand, and absorption.

This publication has 3 references indexed in Scilit: