Using Table 8.2, estimate the distance between the earthquake epicenter and the point at which the seismogram shown in Figure 8.44 was recorded.

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Using Table 8.2, estimate the distance between the earthquake epicenter and the point at which the seismogram shown in Figure 8.44 was recorded.
Primary waves
Secondary waves
-1:49 A.M.
2:00 AM.
50
51
52
53
54
55
56
57
58
59
at- +3
2.5 cm
Surface waves (L waves)
A FIGURE 8.44
Portion of a seismogram showing the arrival of P, S, and surface waves. Source: From S. Judson, M. E.
Kauffman, and L. D. Leet, Physical Geology, 7th ed., 1987 by Prentice Hall, Inc., Englewood Cliffs, N.J.
Transcribed Image Text:Primary waves Secondary waves -1:49 A.M. 2:00 AM. 50 51 52 53 54 55 56 57 58 59 at- +3 2.5 cm Surface waves (L waves) A FIGURE 8.44 Portion of a seismogram showing the arrival of P, S, and surface waves. Source: From S. Judson, M. E. Kauffman, and L. D. Leet, Physical Geology, 7th ed., 1987 by Prentice Hall, Inc., Englewood Cliffs, N.J.
Table 8.2 Travel Time and Time Interval for Arrival of Seismic Waves
Distance
Time (S-P)
km 500 -
-50 sec
40
Interval
300-
30
between P
200 -
20
Travel Time
and S (S-P)
100 -
-10
Distance from
75-
8.
source, km
min
min
min
S
506
-4
2,000
4,000
6,000
8,000
10,000
11,000
4
06
7
25
3
19
6.
58
12
36
38
25-
20-2
10-
5-
9.
21
16
56
7
35
11
23
20
45
9.
22
12
57
23
56
10
59
13
39
25
18
11
39
Source: From S. Judson, M. E. Kauffman, and L. D. Leet, Physical Geology, 7th ed., © 1987 by Prentice Hall, Inc.,
Englewood Cliffs, N.J.
Transcribed Image Text:Table 8.2 Travel Time and Time Interval for Arrival of Seismic Waves Distance Time (S-P) km 500 - -50 sec 40 Interval 300- 30 between P 200 - 20 Travel Time and S (S-P) 100 - -10 Distance from 75- 8. source, km min min min S 506 -4 2,000 4,000 6,000 8,000 10,000 11,000 4 06 7 25 3 19 6. 58 12 36 38 25- 20-2 10- 5- 9. 21 16 56 7 35 11 23 20 45 9. 22 12 57 23 56 10 59 13 39 25 18 11 39 Source: From S. Judson, M. E. Kauffman, and L. D. Leet, Physical Geology, 7th ed., © 1987 by Prentice Hall, Inc., Englewood Cliffs, N.J.
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