Abstract

Since intensity of a seismic wave and its energy density are directly related to the square of particle velocity, energy density recorded as a function of time and space is a function of spatial attenuation factors of the media traversed, partition at reflection boundaries, and geometric spreading. A function may be generated that is diagnostic of attenuation properties of the geologic model, and may be useful for lithologic interpretation. A quantity proportional to the logarithm of the peak absolute value of the square of the particle velocity, or logarithm of energy density, was recorded along test profiles; conventional reflection data were also recorded. Seismic energy is of diagnostic value, but it is necessary to develop techniques to remove geometric and reflectivity effects from recorded energy data, to eliminate measurement errors producing magnitude errors of several orders, and to develop a detailed and accurate set of in-situ spatial attenuation factor data.

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