Translations:Reflection seismology/12/en

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In the 1950s, a large part of the earth’s sedimentary basins, including essentially all water-covered regions, were classified as no-record areas. Yet the 1940s and 1950s were replete with inventions, not the least of which was the modern high-speed electronic stored-program digital computer. In 1952 through 1957, nearly every major oil company and geophysical company sponsored the MIT Geophysical Analysis Group (GAG) to develop digital-processing methods for unlocking the secrets of NR seismograms (Wadsworth et al., 1953[1]; Robinson, 1957[2], 2005[3]; Treitel, 2005[4]). This undertaking was the first effort to convert an industry from analog to digital methodology. The goal was to find ways to remove signal-generated noise (such as ghosts, reverberations, and other multiple reflections) to yield the underlying primary reflections.

  1. Wadsworth, G. P., E. A. Robinson, J. G. Bryan, and P. M. Hurley, 1953, Detection of reflection on seismic records by linear operators: Geophysics, 18, 539–586.
  2. Robinson, E. A., 1957, Predictive decomposition of seismic traces: Geophysics, 22, 767–778.
  3. Robinson, E. A., 2005, The MIT Geophysical Analysis Group (GAG) from inception to 1954: Geophysics, 70, no. 4, 7JA–30JA.
  4. Treitel, S., 2005, The MIT Geophysical Analysis Group (GAG): Geophysics, 70, no. 4, 30JA.