Hello Again
Can someone show me how I should assign the slope values (for example 4
values) in sudipfilt? If it is possible, showing on the screenshot, that
would be great.
My data ( synthetic Zero offset VSP) parameters: my first geophone's
position is 1000m depth, and the last geophone's position is 3000m depth.
The Geophone interval is 20 m.
I added my data.
(Are there any visual sources for sudipfilt or any other things that I can
utilize?
Thank you
Erdi
Hello Everyone
I said before that I was trying to do Zero Offset VSP Processing. To do
that, I tried to use free software is called MVSP and Crewes toolbox. My
problem is that I can start picking first break arrivals from 4th trace,
and I can not see and pick the first three traces when I look at the data
during the picking.
The first software itself assigns negative values for the first three
traces, which results in negative velocities. On the Crewes, I am trying to
assign values like 0.001 0.002 0.003 before the 4th trace because the 4th
trace's time is 0.006, which probably gives rise to wrong velocities.
In short, Can I do anything about this issue on Seismic Unix? Is there any
chance to fix it?
I added one of my files and the screenshot zoomed where the problem is. I
modeled and created this data on different code (fdelmodc). **The data is
passive data, and I utilized the noises, recording 120s. So, when you look
at my data, you need to zoom in to see closely.
Thank you
Best regards
Erdi
Hello All
I am trying to move step by step on Zero Offset VSP Processing. Now, I am
trying to apply band pass filtering to my data using this:
*sufilter < xcor_output_20_sources_B1.su f=5,10,15,20 amps=0,1,1,0 |
filter_data.su <http://filter_data.su>*
However, I did not understand how I should define the frequencies. I tried
to leave the first two frequencies constant and changed the next two
frequencies little by little. Then, I tried to subtract each other, using
this:
*sudiff file1.su <http://file1.su> file2.su <http://file2.su> > diff.su
<http://diff.su>*
Is there any effective way to choose these 4 frequencies in bandpass
filtering?
How should I learn my frequencies?
If you would like to check, I added my file here.
Thanks
Best Regards
Erdi
Hello All
I am trying to apply bandpass filtering but I don't understand how should I
define the frequencies in my data
*sufilter < xcor_output_20_sources_B1.su f=5,10,15,20 amps=0,1,1,0
| filter_data.su <http://filter_data.su/>*
How can I choose right frequencies (f values) in filtering?
Thank you
Erdi
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?
Hello
I am looking for a software for Zero Offset Processing, but all softwares
are required money. I've found this mailing list. So, I can try Seismic
Unix for this. However, I guess it is tough doing Zero Offset VSP
processing on Seismic Unix.
Still, I want to ask. Does anyone have VSP fundamental processing scripts?
If so, I would be appreciated.
Thank you
Erdi
Good morning.
Some time ago, the software DSISoft was developed to process VSP in MatLab.
I could find it in the following link:
http://www.codeforge.com/article/300172
There is a paper you can find in the SEG where the creators talk about it.
I expect it can be useful for you.
Regards
Dorian
On Tue, Jul 21, 2020 at 3:21 AM Gerhard Diephuis <gdiephuis(a)xs4all.nl>
wrote:
> [image: Boxbe] <https://www.boxbe.com/overview> Gerhard Diephuis (
> gdiephuis(a)xs4all.nl) is not on your Guest List
> <https://www.boxbe.com/approved-list?tc_serial=52997666651&tc_rand=631287719…>
> | Approve sender
> <https://www.boxbe.com/anno?tc_serial=52997666651&tc_rand=631287719&utm_sour…>
> | Approve domain
> <https://www.boxbe.com/anno?tc_serial=52997666651&tc_rand=631287719&utm_sour…>
>
> Erdi,
>
>
>
> I cannot help you with scripts, but the SEG has published a
> not-too-expensive booklet titled “VSP Interpretive processing, Theory and
> Practice” by Hinds et al. It does not contain SU scripts, but it gives
> stepwise processing sequences which can be converted into SU script by
> someone familiar with SU
>
>
>
> Good luck
>
>
>
> Gerhard
>
>
>
> *From: *Seisunix <seisunix-bounces(a)mailman.seismic-unix.org> on behalf of
> Erdi Apatay <eapatay(a)mtu.edu>
> *Date: *Tuesday, 21 July 2020 at 02:51
> *To: *<seisunix(a)mailman.seismic-unix.org>
> *Subject: *[Seisunix] Zero Offset VSP Processing
>
>
>
> Hello
>
>
>
> I am looking for a software for Zero Offset Processing, but all softwares
> are required money. I've found this mailing list. So, I can try Seismic
> Unix for this. However, I guess it is tough doing Zero Offset VSP
> processing on Seismic Unix.
>
>
>
> Still, I want to ask. Does anyone have VSP fundamental processing scripts?
> If so, I would be appreciated.
>
>
>
> Thank you
>
> Erdi
>
> _______________________________________________ Seisunix mailing list
> Seisunix(a)mailman.seismic-unix.org
> https://mailman.seismic-unix.org/listinfo/seisunix
> _______________________________________________
> Seisunix mailing list
> Seisunix(a)mailman.seismic-unix.org
> https://mailman.seismic-unix.org/listinfo/seisunix
>
Hi,
There is a link in the wiki
https://wiki.seismic-unix.org/tutorials:tutorials
Enjoy !
D.
Please use seisunix(a)mailman.seismic-unix.org
Le 05/06/2020 à 20:55, Jose Colmenares a écrit :
> After some (long) years of no geophysics, I finally installed the
> latest SU version, hopefully to finish some side projects I've been
> working on.
>
> But I have not been able to find the SU manual in the source code
> downloaded from github. Nor I can download it from the wiki. Google
> finds one SU manual from MIT, which is old.
>
> Where can I find the latest version of the SU manual?
>
> Best regards,
> Jose Colmenares
>
> _______________________________________________
> seisunix mailing list
> seisunix(a)mailman.mines.edu
> https://mailman.mines.edu/mailman/listinfo/seisunix
> Unsubscribe: seisunix-unsubscribe(a)mailman.mines.edu
--
|Dominique Rousset LFCR UMR5150 / E2S UPPA / Dpt des géosciences|
|Univ. Pau et des Pays de l'Adour BP 1155 F-64013 Pau Cedex - France|
|mailto:dominique.rousset@univ-pau.fr jami:drousset http://lfc.univ-pau.fr|
|Off: +33 559 407 423|Cell: +33 660 861 391|xmpp: dominique(a)rousset.nom.fr|
Thank you Dominique.I will try rayt2d. By self doc ı assume you mean the info one sees after typing the module name. Do you? I wonder why isn't there a pdf file for each module in su. It seems typing module name to get the parameters of a module is not sufficient.NecatiSent via the Samsung GALAXY S® 5, an AT&T 4G LTE smartphone
-------- Original message --------
From: Dominique ROUSSET <dominique.rousset(a)univ-pau.fr>
Date: 4/9/20 15:30 (GMT+03:00)
To: seisunix(a)mailman.seismic-unix.org
Subject: Re: [Seisunix] Color palette for seisview
Hi,
As far as I know, seisview is not used a lot and not really
maintained. I hope someone else can answer you question.
regarding sukdmig2d in SU, you can generate the travel time table
using rayt2d.
From sukdmig2d selfdoc :
"1. Traveltime tables were generated by program rayt2d (or other
ones)
on relatively coarse grids, with dimension ns*nxt*nzt. In
the
migration process, traveltimes are interpolated into
shot/gephone
positions and output grids. "
I use it for teaching and it works.
regarding 3D, (and associated sutetraray travel time table
calculator) I have no experience with it. I am a not sure that 3D
PSDM can really run in scalar mode. I did not try, but I am
curious.
From sukdmig3d selfdoc :
"Disclaimer:
This is a research code that will take considerable work to get
into
the form of a a production level 3D migration code. The code
is
offered as is, along with tetramod and sutetraray, to provide a
starting
point for researchers who wish to write their own 3D migration
codes."
Le 09/04/2020 à 07:34, n.gulunay a
écrit :
Hello every one,
I hope you are all safe and doing well.
I have two questions,
1. Is there a good color palette for color plotting
velocity-time or velocity-depth sections in seisview? Also Is
there any instructions on how to bring newly created palettes to
seisview display settings menu?
2. Are there any detailed instructions in su on how to build
needed tables and run kdmig2d and kdmig3d? İf yes, where?
Stay safe.
Sent via the
Samsung GALAXY S® 5, an AT&T 4G LTE smartphone
<
-------- Original message --------
From: John Stockwell <john.19071969(a)gmail.com>
Date: 4/5/20 21:38 (GMT+03:00)
To: seismic unix <seisunix(a)mailman.seismic-unix.org>
Subject: [Seisunix] Modeling Covid-19 with Seismic Unix
I send my good wishes to all of you and I hope that
you, your families, and your friends are faring well in this
difficult time.
For those who are interested in modeling
populations, such as the current epidemic, there is a logistic
equation solver called
“verhulst” in the SU package which you may find of
interest.
For example for Covid-19 cases in the US, taking 22
January as day 0 of cases in the US and 29 February as day 0 for
deaths. Respective
stepmax= values of 72 for cases and 34 for deaths
are both 3 April
verhulst
stepmax=72 h=1 a1=.176 y0=1 a2=1e7 mode=x >
calculated_cases.bin
verhulst
stepmax=35 h=1 a1=.268 y0=1 a2=1e6 mode=x >
calculated_deaths.bin
xgraph <
calculated_cases.bin n=72 nplot=1 d1=1 &
xgraph <
calculated_deaths.bin n=34 nplot=1 d1=1 &
The growth
rate a1 values are determined empirically from publicly
available data, in this case from the CDC and from the
Worldometer site. You will have to make your own estimate of a1
for the data that you are modeling.
Another
parameter that is harder to get is an estimate of the carrying
capacity of the system a2. Here I am assuming a maximum of 1
million cases in the US and 100 thousand deaths.
The number of
new cases or deaths per day is measured by the derivative of the
solutions to the verhulst equation
verhulst stepmax=72 h=1
a1=.176 y0=1 a2=1e7 mode=y > delta_cases.bin
verhulst stepmax=35 h=1
a1=.268 y0=1 a2=1e6 mode=y > delta_deaths.bin
xgraph < delta_cases.bin n=72 nplot=1
d1=1 &
xgraph < delta_deaths.bin n=34
nplot=1 d1=1 &
The peak in the change of the population
per day occurs when the population reaches the exactly
half of the carrying capacity of the system. Thus, raising
the carrying capacity will increase the height of the peak
and move it out later in time.
Take care, everyone and stay safe.
-John
John Stockwell
Visit: https://wiki.Seismic-Unix.org
The new home of Seismic Un*x
_______________________________________________
Seisunix mailing list
Seisunix(a)mailman.seismic-unix.org
https://mailman.seismic-unix.org/listinfo/seisunix
--
|Dominique Rousset LFCR UMR5150 / E2S UPPA / Dpt des géosciences|
|Univ. Pau et des Pays de l'Adour BP 1155 F-64013 Pau Cedex - France|
|mailto:dominique.rousset@univ-pau.fr jami:drousset http://lfc.univ-pau.fr|
|Off: +33 559 407 423|Cell: +33 660 861 391|xmpp: dominique(a)rousset.nom.fr|
<
Hello every one,I hope you are all safe and doing well.I have two questions,1. Is there a good color palette for color plotting velocity-time or velocity-depth sections in seisview? Also Is there any instructions on how to bring newly created palettes to seisview display settings menu?2. Are there any detailed instructions in su on how to build needed tables and run kdmig2d and kdmig3d? İf yes, where?Stay safe.Sent via the Samsung GALAXY S® 5, an AT&T 4G LTE smartphone
-------- Original message --------
From: John Stockwell <john.19071969(a)gmail.com>
Date: 4/5/20 21:38 (GMT+03:00)
To: seismic unix <seisunix(a)mailman.seismic-unix.org>
Subject: [Seisunix] Modeling Covid-19 with Seismic Unix
I send my good wishes to all of you and I hope that you, your families, and your friends are faring well in this difficult time.For those who are interested in modeling populations, such as the current epidemic, there is a logistic equation solver called“verhulst” in the SU package which you may find of interest.For example for Covid-19 cases in the US, taking 22 January as day 0 of cases in the US and 29 February as day 0 for deaths. Respectivestepmax= values of 72 for cases and 34 for deaths are both 3 Aprilverhulst stepmax=72 h=1 a1=.176 y0=1 a2=1e7 mode=x > calculated_cases.binverhulst stepmax=35 h=1 a1=.268 y0=1 a2=1e6 mode=x > calculated_deaths.binxgraph < calculated_cases.bin n=72 nplot=1 d1=1 &xgraph < calculated_deaths.bin n=34 nplot=1 d1=1 &The growth rate a1 values are determined empirically from publicly available data, in this case from the CDC and from the Worldometer site. You will have to make your own estimate of a1 for the data that you are modeling.Another parameter that is harder to get is an estimate of the carrying capacity of the system a2. Here I am assuming a maximum of 1 million cases in the US and 100 thousand deaths.The number of new cases or deaths per day is measured by the derivative of the solutions to the verhulst equationverhulst stepmax=72 h=1 a1=.176 y0=1 a2=1e7 mode=y > delta_cases.binverhulst stepmax=35 h=1 a1=.268 y0=1 a2=1e6 mode=y > delta_deaths.binxgraph < delta_cases.bin n=72 nplot=1 d1=1 &xgraph < delta_deaths.bin n=34 nplot=1 d1=1 &The peak in the change of the population per day occurs when the population reaches the exactly half of the carrying capacity of the system. Thus, raising the carrying capacity will increase the height of the peak and move it out later in time.Take care, everyone and stay safe.-JohnJohn StockwellVisit: https://wiki.Seismic-Unix.orgThe new home of Seismic Un*x
