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Angle-dependent TomostaticsNormal access

Authors: L. Mayer, R. Miller, J. Ivanov, T. Weis and B. Anderson
Event name: 22nd EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems
Session: Near-Surface Seismic Methods 1: Reflection, Sources and Systems
Publication date: 29 March 2009
Organisations: EEGS
Language: English
Info: Extended abstract, PDF ( 641.67Kb )

Summary:
Statics are a dynamic problem that affects most seismic surveys. The key to addressing the statics problem is an accurate estimation of near-surface velocity variability. Reflection velocity analysis is critical to meaningful CMP stacks, however a reliable velocity function depends on reflections with the trace-to-trace static variability associated with an irregular near-surface velocity. Using conventional correlation approaches the problem then becomes cyclic because the relationship between statics estimations and corrections are intertwined with reflection velocity analysis.

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