20
14
12
10
8
6
4
2
CHAPTER 1 BACKGROUND INFORMATION
P
1000 2000 3000 4000 5000 6000 r(km)
14
12
10
8
6
4
2
o
FIGURE 1.6: Distribution in the earth of density p (g cm-3), pressure p (101lNm-2) and gravity 9 (ms-2)
p
(g/c m
3)14,---, 12
10 8 6 4 2
OL---~~--~----~ ____ ~ ____ _ L _ _ _ _ ~~
o
1000 2000 3000 4000 5000 6000r (km)
FIGURE 1.7: Distribution of density p according to the earth model PREM