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(a)
Continental
Oceanic
5
Love Phase
Rayleigh Phase
5
Love Phase
Rayleigh Phase
Love Group
Love Group
4
4
Rayleigh Group
Rayleigh Group
3
3
0
100
200
300
0
100
200
300
Period (s)
Period (s)
(b)
0
2
4
6
8
10
12
0
2
4
6
8
10
12
0
0
20
20
40
40
60
60
ρ
β
α
ρ
β
α
80
80
100
100
500
500
1000
1000
1500
1500
Continental
Oceanic
Figure 4.6. (a) Standard surface-wave dispersion curves for continental and oceanic
paths. (b) Seismic velocity and density models for the dispersion curves in (a). Note
the change in depth scale at 100 km. (After Knopoff and Chang (1977).)
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