Coda Normalization Method
Coda Normalization Method : A method to use the power of local earthquake S-coda at a given lapse time as a measure of earthquake radiation energy, which is used for measurements of site amplification factors, attenuation per unit travel distance, and source energy. This method is based on the assumption of a uniform spatial distribution of coda energy density of a local earthquake at a long lapse time measured from the earthquake origin time. See: Sato et al. (2002, p. 200-201)