Understanding of regional attenuation can help with structure and tectonic interpretation (Aleqabi and Wysession, 2006; Benz et al., 1997; Frankel, 1990), and correcting for the effects of attenuation can lead to better discrimination of small nuclear tests (e.g. Baker et al., 2004; Mayeda et al., 2003; Taylor et al., 2002). Present threshold algorithms for event identification rely on models that are derived differently, and the models can vary greatly for the same region. In a recent submission to the Bulletin of the Seismological Society of America (Ford et al., 2007) we characterize the difference between popular 1-D methods, and the difference within each method based on parameterization choice.
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