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@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@mtu.edu Date: Sunday, 11 August 2024 at 18:03 To: SU-users seisunix@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@mailman.seismic-unix.org To unsubscribe send an email to seisunix-leave@mailman.seismic-unix.org _______________________________________________ Seisunix mailing list -- seisunix@mailman.seismic-unix.org To unsubscribe send an email to seisunix-leave@mailman.seismic-unix.org