60.00 10 15 20 20.00 25 30 35 35.00 40 - 45 50 10 20 30 40 50 60 70 80 90 100 Receiver Offset, (m) Depth, (m)

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The plot below shows ray paths and arrival times for P-wave seismic signals
recorded at a geophone located 60m from a source.
a. Using the plots below, what can you deduce about the relationship
between the velocities of each of the layers?
b. Imagine you can extend the spread of geophone to some large offset. From your answer above, would you expect to see the refracted wave along
layers as first arrival?

60.00
10-
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40 -
45 -
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Receiver Offset, (m)
(w) 'yıdəa
Transcribed Image Text:60.00 10- 15 20 20.00 25 30 35 - 35.00 40 - 45 - 50 10 20 30 40 50 60 70 80 90 100 Receiver Offset, (m) (w) 'yıdəa
60.00
0.00
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0.12 -
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0.22 -
0.24 +
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Receiver Offset, (m)
Time, (s)
Transcribed Image Text:60.00 0.00 0.02 0.04 0.06 0.08 0.10 0.12 - 0.14 - 0.16 - 0.18 - 0.18 0.20 0.22 - 0.24 + 10 20 30 40 50 60 70 80 90 100 Receiver Offset, (m) Time, (s)
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