Hi Erdi -
It looks like you applied a general AGC to your data (beforetopmute.png). This seems to
make amplitudes about equal in the noise before the first breaks and in the real data. I
suggest you first process the data in some way to reduce the amplitudes of the noise
before the first breaks. I have found two simple ways to do this.
One way is to use the "perc" value (perc=99") in suxwigb, but I don't
think that helps you because you need the output after applying "perc" and
suxwigb is a dead-end process.
The other way is to use sugain with "tpow=2". If this is effective in
diminishing the noise before the first break, I would output those gathers as my second
dataset. With the second dataset, my next step would be, trace-by-trace, search down for
some threshold value (basically, the first break), then back up maybe 8 or 10 or 12 ms,
then zero all values earlier than that time. Be sure you don't try to zero amplitudes
before zero time (!).
Regards,David Forel
. . . . . . . . . . . . . .
On Sunday, August 11, 2024 at 03:39:04 PM MDT, Gerhard Diephuis
<gdiephuis(a)xs4all.nl> wrote:
Erdi, good evening
In my mind the most logical would be to define an offset dependent top mute. Obviously you
are dependent on that particular trace header – just plotting a reasonable number of
traces with offset values as horizontal annotations should give an idea whether you can
progress in that vein. Otherwise the route becomes cumbersome…….
Good luck
Gerhard
From: Erdi Apatay <eapatay(a)mtu.edu>
Date: Sunday, 11 August 2024 at 18:03
To: SU-users <seisunix(a)mailman.seismic-unix.org>
Subject: [Seisunix] Top Mute
Hi all!
I have real seismic data and I want to apply top mute to this data. Actually, I can apply
top mute to shot gathers one by one, but I wanted to create a script that could apply top
mute to all of them, but I could not get a good result.
Do I need to create a script that includes a loop to do this properly?
What path should I follow?
I would be happy if you could help
Best
Erdi
P.S.: I attached a script I wrote ( I tried to do top mute only for the right upper side
of the shot gathers for testing), and how they look after applying my script, and output
of surange command.
_______________________________________________ Seisunix mailing list --
seisunix(a)mailman.seismic-unix.org To unsubscribe send an email to
seisunix-leave(a)mailman.seismic-unix.org
_______________________________________________
Seisunix mailing list -- seisunix(a)mailman.seismic-unix.org
To unsubscribe send an email to seisunix-leave(a)mailman.seismic-unix.org