Reflection-point smear for dipping reflectors

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Problem

Assume a reflector 2000 m beneath the midpoint and a dip of with constant over-burden velocity. How much does the reflecting point move between members of the common-midpoint set for offsets of 0, 500, 1000, 1500, and 2000 m?

Background

Equation (4.11e) gives the shift in the reflecting point in terms of the dip , slant depth , and offset 2s:


(8.2a)

Solution

Because , equation (8.2a) becomes

Thus, we get the following values of for the various offsets:

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