Brune Model
Brune Model : The omega-squared circular-crack model proposed by Brune (1970). The physical basis of this model was refined by Madariaga (1976), who solved the mathematical problem of seismic wave radiation from an expanding circular crack that stops. See omega-squared model, Chapter 3 in this Manual, Aki and Richards (2002 or 2009, p. 560-565) and Fig. 1 in Bormann et al. (2009)