Fig. 9
![Fig. 9](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40623-015-0305-0/MediaObjects/40623_2015_305_Fig9_HTML.gif)
Spatial distributions of the temporal changes in the instrument response. a Spatial distribution of the difference between the estimated a natural frequencies f and b damping constants h before and after the 2011 Tohoku-Oki earthquake
Spatial distributions of the temporal changes in the instrument response. a Spatial distribution of the difference between the estimated a natural frequencies f and b damping constants h before and after the 2011 Tohoku-Oki earthquake