Figure 7 The picture displays the subduction zone of where the Philippine Sea plate is sinking underneath Japan.
Source: http://images.google.com/imgres?imgurl=http://jove.geol.niu.edu/students/mdare/VirtualFieldTrip/
Mt_Fuji/japan_trenchs.jpg&imgrefurl=http://jove.geol.niu.edu/students/mdare
/VirtualFieldTrip/Mt_Fuji/MountFujiGeology.html&h=271&w=345&sz=34&hl
=en&start=1&um=1&tbnid=v0Kqve24bZuU3M:&tbnh=94&tbnw=120
&prev=/images3Fq%3Dmt%2Bfuji%2Btectonic%2Bplates%26svnum%3D10%26um%3D1%26hl%3Den%26rls%3DSUNA,SUNA:2006-04,SUNA:en%26sa%3DN