Fig. 3

Location of the obtained dislocation source (rectangle with brown line) and a comparison of the observed (black vector) and calculated (white vector) vertical displacements with respect to BM. 1 (solid star). Error ellipses are 3σ. The thick line of the brown rectangle represents the top of the obtained dislocation source. The rectangle with a navy-blue dashed line represents the estimated sill from InSAR in 2007–2010 reported by Kobayashi (2018). The ellipse with orange dashed line represents Yahata jigoku, where a new crater was formed between 2017 and 2018