Figure 3From: Heterogeneous interplate coupling along the Nankai Trough, Japan, detected by GPS-acoustic seafloor geodetic observationSchematic pictures of the estimation of seafloor positions. The positions were analyzed using the method developed by Matsumoto et al. (2008). In this analysis, we estimated the position (yellow circle) of the centroid of the grouped transponders (green circles) for each epoch, constrained by the positional relationship of the grouped transponders (red diamonds) in all epochs.Back to article page