Table 7

Parameters of the generalized soil-column models for the zones at the Coastal Plain

Zone

Thickness,

m

Density,

g/cm­3

Vs,

m/sec

Frequency, Hz

Amplification factor

1

Half-space

-

< 1.7

2

15

1.6

200

1-2

2-3

35

1.7

350

Half-space

1.8

700

3

25

1.6

250

2-3

2-3

Half-space

1.8

700

4

25

1.6

250

2-4

4-5

Half-space

1.9

1000

5

15

1.6

200

2-3

5-6

50

1.8

700

Half-space

2.2

1600

6

15

1.6

250

3-6

3-5

20

1.8

700

Half-space

1.9

1000