...
is
p-wave velocity of rocks found at travel point
.
Image Added
In relatively simple geological structures the travel time can be approximated by a Dix equation:
| LaTeX Math Block |
|---|
|
T^2_x = T^2_0 + \frac{4 x^2}{V^2_{rms}} |
where where
is reflection time at zero offset (which means the normal incident wave reflection
):| LaTeX Math Block |
|---|
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T_0 = 2 \cdot \int_0^H \ \frac{\delta z}{V_p(z)} |
where
is the depth of the reflecting boundary,
– average
p-wave velocity through the reflecting travel distance between the
seismic source and
seismic receiver:
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