Fig. 2From: Azimuthal differences and changes in strain rate and stress of the Japanese Islands deduced from geophysical dataResults of \(\mathrm{IQR}(\sigma )\) and \({W}_{t}\) for the 19 periods, in Phase 1 before the 2011 off the Pacific coast of Tohoku earthquake (top figure), Phase 2 immediately after the 2011 off the Pacific coast of Tohoku earthquake (center figure), and Phase 3 afterward (bottom figure). The gray shadings indicate \({W}_{t}\) ranges with relatively small IQR \((\sigma )\)Back to article page