L19_SeismicRefractionII-page7

L19_SeismicRefractionII-page7 - Generalized reciprocal...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Applied Geophysics – Refraction II Generalized reciprocal method Procedure: Velocity analysis function, T V •Ca lcu la te T V as a function of offset AG for a variety of XY distances • The optimal XY is when E and F converge on H • Optimal XY is identified by the smoothest T V curve • Refractor velocity V’ is the reciprocal of the slope of T V • Can determine variations in V’ along the length of the profile
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Generalized reciprocal method Procedure: Time-depth function, T G Calculate T G as a function of offset AG for a variety of XY distances Optimal XY is identified by the roughest T G curve Calculate average velocity from surface to refractor Calculate the depth from T G and the average velocity T G Offset AG ' 2 ' 2 V T XY XY V V G + = 2 2 ' ' V V V V T h G =...
View Full Document

Ask a homework question - tutors are online