When looking at first arrival times in a seismic refraction survey, what relationship between the layer velocities allow us to determine the velocity of layer 3 and know that it is in fact the velocity for layer 3? a. V1 < V2 < V3 b. V2 < V1 < V3 c. as long as V2 > V3 d. V1>V2
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When looking at first arrival times in a seismic refraction survey, what relationship between the layer velocities allow us to determine the velocity of layer 3 and know that it is in fact the velocity for layer 3?
a. V1 < V2 < V3
b. V2 < V1 < V3
c. as long as V2 > V3
d. V1>V2<V3
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