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The Heterogeneity of the Crust and its Effect on Seismic Wide-Angle Reflection Fields

Chapter

Abstract

During the past 90 years, our conceptual image of the Earth’s crust has gradually evolved from that of a simple one or two layered crust (e.g., Mohorovičić, 1910; Conrad, 1925; Jeffereys, 1926; Hodgson, 1953), to multi-layered crusts (e.g., McCamy and Meyer, 1966; Mueller, 1977; Sandmeier and Wenzel, 1986; Stephenson et al., 1989), to highly complex morphologies with fractal characteristics (e.g., Nikolajev and Tregub, 1970; Mereu and Ojo 1981; Frankel and Clayton, 1986; Levander and Holliger, 1992; Goff and Levander, 1996). This change has occurred as a result of a revolution in both seismic data acquisition technology (e.g., Berry and Mair, 1977; Brown et al., 1980; Meissner, 1986; Mooney and Brocher, 1987) and computational technology (e.g., Fuchs and Muller, 1971; Kelly et al.,1976; McMechan and Mooney, 1980; Červený and Psençik, 1984; White, 1989; Zelt and Smith, 1992). Much of the current information about crustal structure has come from numerous controlled-source seismic refraction and reflection experiments. These have been described in many published works over the past 40 years (e.g., Steinhart and Smith, 1966; Barazangi and Brown, 1986a,b; Mathews and Smith, 1987; Meissner et al.,1991; Klemperer and Mooney, 1998).

Keywords

Synthetic Seismogram Coda Wave Crustal Model Canadian Shield Record Section 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer Science+Business Media New York 2003

Authors and Affiliations

  1. 1.Department of Earth SciencesUniversity of Western OntarioLondonCanada

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