[Seisunix] VSP Processing

Erdi Apatay eapatay at mtu.edu
Thu Aug 6 00:29:58 CEST 2020

Hello All

I am trying to pick first break arrivals in Zero Offset VSP on the
Crewes toolbox and another software. My problem is that I start picking
from 4th trace because I cannot see the first three traces when I look at
my data, which results in wrong velocities.

My data is passive zero-offset VSP data, utilizing ambient noise sources. I
created this by using a modeling code.

I added one of my data and the problem's screenshot

Can I fix this on Seismic Unix?
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