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dc.contributor.authorSteeples, Don W.
dc.contributor.authorMiller, Richard D.
dc.contributor.authorBlack, Ross A.
dc.date.accessioned2007-09-18T15:18:34Z
dc.date.available2007-09-18T15:18:34Z
dc.date.issued1990-06
dc.identifier.citationGEOPHYSICS, VOL. 55, NO. 6 (JUNE 1990); P. 769-775, 10 FIGS.en
dc.identifier.urihttp://hdl.handle.net/1808/1687
dc.description.abstractShallow seismic reflection surveys can assist in determination of velocity and/or thickness variations in nearsurface layers. Static corrections to seismic reflection data compensate for velocity and thickness variations within the "weathered zone." An uncompensated weathered-layer thickness variation on the order of 1 m across the length of a geophone array can distort the spectrum of the signal and result in aberrations on final stacked data. P-wave velocities in areas where the weathered zone is composed of unconsolidated materials can be substantially less than the velocity of sound in air. Weathered-layer thickness variation of 1 m in these low-velocity materials could result in a static anomaly in excess of 3 ms. Shallow-reflection data from the Texas panhandle illustrate a real geologic situation with sufficient variability in the near surface to significantly affect seismic signal reflected from depths commonly targeted by conventional reflection surveys. Synthetic data approximating a conventional reflection survey combined with a weathered-layer model generated from shallow-reflection data show the possible dramatic static effects of alluvium. Shallow high-resolution reflection surveys can be used both to determine the severity of intra-array statics and to assist in the design of a filter to remove much of the distortion such statics cause on deeper reflection data. The static effects of unconsolidated materials can be even more dramatic on S-wave reflection surveys than on comparable P-wave surveys.en
dc.language.isoen_USen
dc.publisherSociety of Exploration Geophysicistsen
dc.subjectShallow
dc.subjectReflection
dc.subjectSeismic
dc.titleStatic corrections from shallow-reflection surveysen
dc.typeTechnical Report
kusw.oastatusna
dc.subject.urihttp://id.worldcat.org/fast/1111272
dc.subject.fastSeismic reflection method
kusw.oapolicyThis item does not meet KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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