a)
t=100s
t=300s
t=500s
t=1000s
S (m2 s / rad )
t=3000s
t=5000s
t=10000s
10000
t=30000s
t=50000s
1000
100
10
1
0.1
0.01
0.001
0.0001
1e-005
ω, (rad/s )
1e-006
1
10
Fre que ncy
b)
t=11000s
t=12000s
t=13000s
S (m 2 s / rad )
t=14000s
t=15000s
10000
t=16000s
t=17000s
t=18000s
1000
t=19000s
t=20000s
100
t=1350s
t=1450s
t=15500s
10
1
0.1
0.01
0.001
0.0001
1e-005
ω, (rad/s )
1e-006
1
10
Fig. 1
Frequency spectrum evolution within time intervals:
100 ≤ t
< 50000 sec ; b)11000 ≤ t < 15000 sec ; (----) approximation S ≈ ω -4.0
a)
Previous Page
