![](swpfig4a.gif)
(a) Tertiary bedrock model
![](swpfig4b.gif)
(b) Pre-Tertiary bedrock model
![](swpfig4c.gif)
(c) 3-D model 1 plus the Sagami basin
![](swpfig4d.gif)
(d) 3-D model 2 plus the Sagami basin
![](swpfig4e.gif)
(e) 2-D model corresponding to 3-D model 1 and 2
FIG.4. Plans of 3-D model. Bold lines indicate the area of boundary elements.