Premium
PART II: THE SECTIONAL RETRO‐CORRELOGRAM
Author(s) -
ANSTEY N. A.,
NEWMAN P.
Publication year - 1966
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1966.tb02058.x
Subject(s) - correlogram , seismic trace , event (particle physics) , trace (psycholinguistics) , geology , mathematics , physics , statistics , computer science , astrophysics , artificial intelligence , linguistics , philosophy , wavelet
The retro‐correlation function (or auto‐convolution) of a seismic trace is obtained by correlating the trace against a time‐reversed version, of itself. The Sectional Retro‐Correlogram is obtained by the arrangement of retro‐correlation functions in sectional form, in the manner of the Sectional Auto‐Correlogram. During the process of retro‐correlation, each primary event on the seismic trace interacts with each primary event on the time‐reversed seismic trace to generate a first‐order surface multiple event. Similarly each primary interacts with each multiple, and each multiple with each multiple, to generate higher‐order surface multiple events. Thus the final appearance of the Sectional Retro‐Correlogram is that of a record section which contains no primary reflections. The travel‐time and sign of the events displayed on the Sectional Retro‐Correlogram are correct, but the amplitudes of the higher‐order multiples are exaggerated. Nevertheless there is often a remarkable correspondence between the Sectional Retro‐Correlogram and the later parts of the record section from which it was derived.