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Official Journal of the Asia Oceania Geosciences Society (AOGS)

Table 4 Homogeneity of the study region shown through estimated b-values for 21 city-circle sub-catalogs

From: Nowcasting earthquakes in Sulawesi Island, Indonesia

Spatial region Total number of events \(\left( {M \ge 4.5} \right)\) Number of large \(\left( {M \ge 6.5} \right)\) earthquakes Maximum magnitude Estimated b-value Coefficient of Determination (R2) in G–R frequency–magnitude linear regression model
Palu 1182 06 7.9 0.9870 0.9869
Makassar 144 01 6.9 1.0868 0.9415
Manado 5281 21 7.5 1.2922 0.9936
Kendari 322 03 7.5 0.8924 0.9701
Bitung 5540 22 7.5 1.2778 0.9927
Gorontalo 2266 09 7.9 1.0470 0.9826
Palopo 626 03 7.0 1.1387 0.9933
Bau-Bau 216 02 7.5 0.8744 0.9383
Luwuk 2419 08 7.7 1.0910 0.9780
Toli-toli 1578 11 7.9 1.0114 0.9900
Pare-pare 333 01 6.9 1.2598 0.9564
Poso 1503 09 7.9 1.0257 0.9887
Bone 225 02 6.9 1.1066 0.9814
Kolaka 426 03 7.5 0.9636 0.9704
Buton 200 02 7.5 0.8611 0.9399
Watampone 292 02 6.9 1.1631 0.9844
Polewali 461 02 6.9 1.1916 0.9946
Donggala 1197 07 7.9 0.9948 0.9821
Taliabu 2056 08 7.7 1.0615 0.9777
Mamuju 580 03 7.4 1.0509 0.9897
Morowali 973 04 7.6 0.9880 0.9665