Pseudo S-wave broadband response of C-waves after domain change

Abstract

Transforming multicomponent data from one domain to another has long been an important tool for interpretation, VP/VS analysis and joint amplitude versus offset/angle AVO/AVA inversion. Recent interest in the dynamics of these domain changes has led to investigations in wavelet distortion and correction methods for improved inversion and bandwidth for well ties (Bansal and Matheney, 2010; Gaiser, 2011; and Ursenbach et al., 2012). In this article, we derive corrections for converted P- to S-waves (C-waves), to match their effective wavelengths with the physical wavelengths of S-waves, in P-wave time or depth. We call this a pseudo S-wave response. Although bandwidth is broadened, these corrections do not completely retrieve the resolution benefits of shorter wavelength S-waves.