Fig. 2
From: Relation between the coupling and tremor rates in the transition zone around the Shikoku region
Examples of coupling distributions (solid contours) at 3 of the 41 epochs with epicenters of tremor in the same epoch. a, b and c show the distributions in 2010.2-2011.2, 2011.6-2012.6, and 2013.0-2014.0, respectively. The blue and red contours represent the positive and negative coupling rates, respectively, and the negative coupling rates correspond to slow slips. Spacings of the contours are 1 and 3 cm/year for the positive and negative values, respectively. Blue dots denote the epicenters of the tremors, and black grids are used for analyzing the relation between the coupling and the tremor count rates. Grids A–E correspond to the results that are depicted in Figs. 3 and 5