Fig. 9
From: The waveform inversion of mainshock and aftershock data of the 2006 M6.3 Yogyakarta earthquake
The grid search method to obtain the best solution for the focal mechanism of the June 16 aftershock as a function of time sampling and variance for each of the velocity models and bandpass filter ranges as shown in Table 2. The blue, yellow, red, brown, and green color beachballs indicate the filtering used by Nakano, Suardi, Mikumo, Yagi, and this study, respectively. The velocity models used include a AK135, b CRUST, c PREM, d JB and e Koulakov