36. What is a possible physical reason for the increase in slope of this TX graph?X (distance)a. There may be a low velocity layer that is detectible with refraction data.b. The dip of a refracting horizon steepens half way along the portionobserved by the surveyc. The first two segments of the graph are both direct arrivals.d. The thickness of the overlying layer decreases with distance.T (time)

Seismic refraction is defined as the techinique in which velocity and layer interface structure is…

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36. What is a possible physical reason for the increase in slope of this TX graph?

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Question

36. What is a possible physical reason for the increase in slope of this TX graph?
X (distance)
a. There may be a low velocity layer that is detectible with refraction data.
b. The dip of a refracting horizon steepens half way along the portion
observed by the survey
c. The first two segments of the graph are both direct arrivals.
d. The thickness of the overlying layer decreases with distance.
T (time)

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