1993
DOI: 10.1029/93jb01156
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Anisotropic reflection and transmission calculations with application to a crustal seismic survey from the East Greenland Shelf

Abstract: A three‐component refraction data set recorded over the East Greenland Shelf contained two anomalous shear wave arrivals. The direct‐S phase emerged at the receiver as an apparent SH wave even though the airgun source was purely compressional. We have concluded that this arrival is the result of anisotropy in the upper crust. By employing a number of fairly simple techniques we were able to highlight a second, delayed quasi‐shear arrival and interpret shear wave splitting. Modeling of the polarization, amplitu… Show more

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Cited by 21 publications
(16 citation statements)
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“…Thus a more complete evaluation of the reflection and transmission (R/T) properties is needed. Over the past several decades significant contributions have been made in the evaluation of R/T coefficients for isotropic (e.g., Gilbert & Backus, 1983;Molotkov et al, 1976;Novotný et al, 1980;Kennett, 1983) and anisotropic (e.g., Garmany, 1983;Fryer & Frazer, 1984;Guest et al, 1993) layered media (see Kennett, 2001a). In most of these approaches, the solution to the R/T response involves using a local plane-wave and planeboundary approximation (see Hudson, 1980;Kennett, 1983).…”
Section: Statement Of Problemmentioning
confidence: 99%
See 1 more Smart Citation
“…Thus a more complete evaluation of the reflection and transmission (R/T) properties is needed. Over the past several decades significant contributions have been made in the evaluation of R/T coefficients for isotropic (e.g., Gilbert & Backus, 1983;Molotkov et al, 1976;Novotný et al, 1980;Kennett, 1983) and anisotropic (e.g., Garmany, 1983;Fryer & Frazer, 1984;Guest et al, 1993) layered media (see Kennett, 2001a). In most of these approaches, the solution to the R/T response involves using a local plane-wave and planeboundary approximation (see Hudson, 1980;Kennett, 1983).…”
Section: Statement Of Problemmentioning
confidence: 99%
“…From here on, the lateral coordinates and slownesses are denoted by Greek subscripts (e.g., xα and pα). After Fourier transformation and using a modified form introduced by Woodhouse (1973), the equation of motion 3.2 is written in matrix form (Guest et al, 1993) …”
Section: Reflection and Transmission Coefficientsmentioning
confidence: 99%
“…Reflected seismic transit times (e.g., Wang & Tsvankin, 2013) and amplitudes carry valuable information about the underlying elasticity, and its directional dependency is the key to the understanding of elastic anisotropy (e.g., Ekanem et al, 2013;Far et al, 2013;Guest et al, 1993;Hall & Kendall, 2003;Landrø & Tsvankin, 2006;Sayers & Dean, 2001).…”
Section: Introductionmentioning
confidence: 99%
“…Interference between the anisotropic quasi‐shear (qS) waves is the most diagnostic wave‐propagation effect. Sometimes two distinct shear waves are apparent (Winterstein & De 2001; Guest et al 1993). If they are not apparent one can infer only that the two shear‐wave speeds are close together in the particular propagation direction sampled.…”
Section: Introductionmentioning
confidence: 99%