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Array analysis of reflector heterogeneity

J. N. Louie and J. E. Vidale
Array analysis of reflector heterogeneity
Geophysics (April 1991) 56 (4): 565-571


In deep crustal reflection study, as in conventional exploration seismology, it is important to determine the geometry of the physical contrasts between rocks that cause reflections, to make reliable geologic interpretations. Fundamentally different reflecting structures produce similar signatures in stacked seismic sections. We have developed a method that uses prestack records to differentiate lateral structural variations from lateral reflectivity variations and laterally homogeneous structures. Full-wave acoustic multioffset synthetics of canonical 2-D reflector configurations, analyzed by statistically enhanced slant-stack processes, show that lateral heterogeneity such as a wavy reflector can be identified from changes in slowness across a receiver array as a function of time. Application of these methods to deep crustal reflections, recorded in the Mojave Desert of southern California, identifies laterally heterogeneous midcrustal structures and is consistent with a laterally homogeneous Moho.

ISSN: 0016-8033
EISSN: 1942-2156
Coden: GPYSA7
Serial Title: Geophysics
Serial Volume: 56
Serial Issue: 4
Title: Array analysis of reflector heterogeneity
Affiliation: Pa. State Univ., Dep. Geosci., University Park, PA, United States
Pages: 565-571
Published: 199104
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 14
Accession Number: 1991-024185
Categories: Applied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects.
N33°30'00" - N37°15'00", W118°00'00" - W112°30'00"
Secondary Affiliation: Univ. Calif. at Santa Cruz, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 1991
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