Fig. 6From: Detection of crustal deformation prior to the 2014 Mt. Ontake eruption by the stacking methodTheoretical changes in each type of stacked data according to the depth of the pressure source assuming a a spherical pressure source and b a tensile crack source. The horizontal axis shows the magnitude of the change in each stacked data normalized by the magnitude of change in the short stacked data at 0 km depth (black dots)Back to article page