Ground Structure Model at KEK (Oyo Co.ltd.)


depthlayer thicknessS-wave velocity densitydamping coefficientgeology
mmm/secg/cm3%
331101.45.0loam
411101.65.0cohesive soil(volcanic ash )
731901.75.0sand
1142201.75.0silty sand
1322201.65.0sandy silt
1632901.75.0sandy soil
1712901.95.0gravel
2252001.85.0sandy silt
3082301.85.0sandy silt
3772801.85.0silt
4586002.01.3gravel
5054601.91.6silty sand
5663301.92.3silty sand
6373101.82.4sandy silt
75123901.91.9sand with silt
8492701.82.8silt, silty sand
9064602.01.6gravel
9997502.01.0 gravel
320*2217501.91.0 gravel
3000*2.5-sand