Preliminary Reference Earth Model (PREM) (Dziewonski & Anderson, 1981)

Region

Radius

Ks

σ

P

g

(km)

(m/s)

(m/s)

(kg/m3)

(Gpa)

(Gpa)

(Gpa)

(m/s2)

Inner Core

0.0

11266.20

3667.80

13088.48

1425.3

176.1

0.4407

363.850

0.0000

200.0

11255.93

3663.42

13079.77

1423.1

175.5

0.4408

362.900

0.7311

400.0

11237.12

3650.27

13053.64

1416.4

173.9

0.4410

360.030

1.4604

600.0

11205.76

3628.35

13010.09

1405.3

171.3

0.4414

355.280

2.1862

800.0

11161.86

3597.67

12949.12

1389.8

167.6

0.4420

348.670

2.9068

1000.0

11105.42

3558.23

12870.73

1370.1

163.0

0.4428

340.240

3.6203

1200.0

11036.43

3510.02

12774.93

1346.2

157.4

0.4437

330.050

4.3251

1221.5

11028.27

3504.32

12763.60

1343.4

156.7

0.4438

328.850

4.4002

Outer Core

1221.5

10355.68

0.00

12166.34

1304.7

0.0

0.5000

328.850

4.4002

1400.0

10249.59

0.00

12069.24

1267.9

0.0

0.5000

318.750

4.9413

1600.0

10122.91

0.00

11946.82

1224.2

0.0

0.5000

306.150

5.5548

1800.0

9985.54

0.00

11809.00

1177.5

0.0

0.5000

292.220

6.1669

2000.0

9834.96

0.00

11654.78

1127.3

0.0

0.5000

277.040

6.7715

2200.0

9668.65

0.00

11483.11

1073.5

0.0

0.5000

260.680

7.3645

2400.0

9484.09

0.00

11292.98

1015.8

0.0

0.5000

243.250

7.9425

2600.0

9278.76

0.00

11083.35

954.2

0.0

0.5000

224.850

8.5023

2800.0

9050.15

0.00

10853.21

888.9

0.0

0.5000

205.600

9.0414

3000.0

8795.73

0.00

10601.52

820.2

0.0

0.5000

185.640

9.5570

3200.0

8512.98

0.00

10327.26

748.4

0.0

0.5000

165.120

10.0464

3400.0

8199.39

0.00

10029.40

674.3

0.0

0.5000

144.190

10.5065

3480.0

8064.82

0.00

9903.49

644.1

0.0

0.5000

135.750

10.6823

D''

3480.0

13716.60

7264.66

5566.45

655.6

293.8

0.3051

135.750

10.6823

3600.0

13687.53

7265.75

5506.42

644.0

290.7

0.3038

128.710

10.5204

3630.0

13680.41

7265.97

5491.45

641.2

289.9

0.3035

126.970

10.4844

Lower mantle

3630.0

13680.41

7265.97

5491.45

641.2

289.9

0.3035

126.970

10.4844

3800.0

13447.42

7188.92

5406.81

609.5

279.4

0.3012

117.350

10.3095

4000.0

13245.32

7099.74

5307.24

574.4

267.5

0.2984

106.390

10.1580

4200.0

13015.79

7010.53

5207.13

540.9

255.9

0.2957

95.760

10.0535

4400.0

12783.89

6919.57

5105.90

508.5

244.5

0.2928

85.430

9.9859

4600.0

12544.66

6825.12

5002.99

476.6

233.1

0.2898

75.360

9.9474

4800.0

12293.16

6725.48

4897.83

444.8

221.5

0.2864

65.520

9.9314

5000.0

12024.45

6618.91

4789.83

412.8

209.8

0.2826

55.900

9.9326

5200.0

11733.57

6563.70

4678.44

380.3

197.9

0.2783

46.490

9.9467

5400.0

11415.60

6378.13

4563.07

347.1

185.6

0.2731

37.290

9.9698

5600.0

11065.57

6240.46

4443.17

313.3

173.0

0.2668

28.290

9.9985

5600.0

11065.57

6240.46

4443.17

313.3

173.0

0.2668

28.290

9.9985

5701.0

10751.31

5945.08

4380.71

299.9

154.8

0.2798

23.830

10.0143

Transition Zone

5701.0

10266.22

5570.20

3992.14

255.6

123.9

0.2914

23.830

10.0143

5771.0

10157.82

5516.01

3975.84

248.9

121.0

0.2909

21.040

10.0038

5771.0

10157.82

5516.01

3975.84

248.9

121.0

0.2909

21.040

10.0038

5871.0

9645.88

5224.28

3849.80

218.1

105.1

0.2924

17.130

9.9883

5971.0

9133.97

4932.59

3723.78

189.9

90.6

0.2942

13.350

9.9686

5971.0

8905.22

4769.89

3543.25

173.5

80.6

0.2988

13.350

9.9686

6061.0

8732.09

4706.90

3489.51

163.0

77.3

0.2952

10.200

9.9361

6151.0

8558.96

4643.91

3435.78

152.9

74.1

0.2914

7.110

9.9048

Low Velocity Zone

6151.0

7989.70

4418.85

3359.50

127.0

65.6

0.2797

7.110

9.9048

6221.0

8033.70

4443.61

3367.10

128.7

66.5

0.2796

4.780

9.8783

6291.0

8076.88

4469.53

3374.71

130.3

67.4

0.2793

2.450

9.8553

LID

6291.0

8076.88

4469.53

3374.71

130.3

67.4

0.2793

2.450

9.8553

6346.6

8110.61

4490.94

3380.76

131.5

68.2

0.2789

0.604

9.8394

Crust

6346.6

6800.00

3900.00

2900.00

75.3

44.1

0.2549

0.604

9.8394

6356.0

6800.00

3900.00

2900.00

75.3

44.1

0.2549

0.337

9.8332

6356.0

5800.00

3200.00

2600.00

52.0

26.6

0.2812

0.337

9.8332

6368.0

5800.00

3200.00

2600.00

52.0

26.6

0.2812

0.300

9.8222

Ocean

6368.0

1450.00

0.00

1020.00

2.1

0.0

0.5000

0.300

9.8222

6371.0

1450.00

0.00

1020.00

2.1

0.0

0.5000

0.000

9.8156

Graphics of these data: Click here!