1887

Abstract

Many techniques for processing shear-wave splitting in VSP data assume orthogonality of the split shear-waves, and are consequently restricted to zero or near-offset VSPs and symmetry planes (Wintersteen and Meadows 1991; Zeng and MacBeth 1993; among others). Here, we derive equations for multicomponent seismic data (two or three sources recorded by 3C receivers) for non-orthogonal split shear-waves. The equations can be solved by the linear-transform technique (LTT) of Li and Crampin (1993) to determine the shear-wave polarizations in both zero- and offset VSPs . This method is particularly useful where orthogonal techniques often fail when deviation from orthogonality exceeds 5°, or the incidence angle exceeds 1.5°.

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/content/papers/10.3997/2214-4609.201411389
1993-06-08
2020-04-04
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201411389
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