Table 2. Initial and Final 1-D Models

Interface Depth, km

Initial P velocity, km/s

Final 1-D P velocity, km/s

Initial S velocity, km/s

Final 1-D S velocity, km/s

-5 - 15

5.80

5.75

3.40

3.32

15 - 30

6.50

6.53

3.75

3.80

30 - 45

7.90

7.89

4.50

4.54

45 - 60

8.00

8.09

4.50

4.64

60 - 100

8.10

8.12

4.50

4.67

100 - 150

8.10

8.12

4.50

4.67

150 - 200

8.15

8.15

4.52

4.67

200 - 260

8.20

8.20

4.55

4.67

260 - 330

8.40

8.40

4.65

4.67

330 - 410

8.80

8.80

4.80

4.80

410 - 490

9.45

9.45

5.15

5.15

490 - 570

9.80

9.80

5.30

5.30

570 – 650

10.15

10.15

5.50

5.50

The final best fit 1-D model was obtained from inversion of local data. The average velocity in each layer of final 3-D model was insignificantly different from 1-D inversion results.