Fig. 1
(modified from Hall and Smyth 2008; Waltham et al. 2008))
a Relocated earthquakes of eastern Indonesia 2009–2018 with magnitude Mw > 4 from Supendi et al. (2020) shown by colored dots. The red rectangle in the inset presents the coverage area of the seismicity map. Black lines represent the plate boundaries. The yellow rectangle represents the location of this study. The blue star represents the largest recent earthquake in the Molucca Sea region (Mw 7.1), which occurred on November 14, 2014. b Illustration of A–B cross section of Molucca Sea that describes the structure of arc-arc collision zone