Seisunix January 2022

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Incremental Seismic Un*x Release 44R21
by John Stockwell 29 Mar '22

29 Mar '22

Dear Seismic Unix user, I have put some fixes in for the Fortran codes and for the SFIO installations so that you should be able to install everything. Mac OS X Big Sur was a painful upgrade. As you might guess, I am preparing for Release 45. If you have codes that can be shared under the Berkeley style license (no GPL), that is in the style of SU, but honors the existing header structure, has a demo that generates its own data, and that you would like to have included in SU, please email me at: john.19071969(a)gmail.com <mailto:john.19071969@gmail.com> so we can discuss how best to include the code. Thank you for using Seismic Un*x. John Stockwell | john.19071969(a)gmail.com https://wiki.Seismic-Unix.org (The New Home of Seismic Un*x) ——— Release notes for 44R21 ---- Summer 2018 - Thanks to Dominque Rousset of the University of Pau, Seismic Unix distributions and other information may be found at https://wiki.seismic-unix.org Installation tip. If you get error messages regarding the XDR materials you may need to install libtirpc from your Linux distribution. John Stockwell retired from the Colorado School of Mines effective 1 Jan 2018. He continues to work with Seismic Unix. Please email: john.19071969(a)gmail.com if you have questions, or if you want to supply bug fixes or new SU code. What is new in the SU package: character*120 fnames(2) from fnames(3) Thanks to Fernando Roxo da Motta Fortran/Raytrace3d/ktime_3d_rayq.f - ERROR of argument mismatch in two locations. fix: added -fallow-argument-mismatch to the FFLAGS in Makefile.config_Big_Sur this might need to be propagated to all of the Makefile.config_* and this likely takes care of the vzestf.f error as well. Sfio/ Replaced these files with versions from the 2002 release of sfio. ./src/lib/sfio/Stdio_b/sprintf.c ./src/lib/sfio/Stdio_b/vsprintf.c ./src/lib/sfio/Stdio_s/stdsprintf.c The make sfio should work now. demos/Ordinary_differential_equations - has been added to go with the new ordinary_differential equation items in par/main John Stockwell | john.19071969(a)gmail.com https://wiki.Seismic-Unix.org (The New Home of Seismic Un*x) 58 Johns-iMac.local> more news44RXX Summer 2018 - Thanks to Dominque Rousset of the University of Pau, Seismic Unix distributions and other information may be found at https://wiki.seismic-unix.org Installation tip. If you get error messages regarding the XDR materials you may need to install libtirpc from your Linux distribution. John Stockwell retired from the Colorado School of Mines effective 1 Jan 2018. He continues to work with Seismic Unix. Please email: john.19071969(a)gmail.com if you have questions, or if you want to supply bug fixes or new SU code. What is new in the SU package: Restructuring: par/main is now: par/main/apertures par/main/cellular_automata par/main/data_conversion par/main/material_parameters par/main/ordinary_differential_equations par/main/parameter_file_utilities par/main/plotting_utilities par/main/ray_theory par/main/refraction par/main/resampling par/main/smoothing par/main/statistics par/main/velocity_model_building par/main/velocity_perturbation par/main/wavelet_transform New: ramac2su - converts RAMAC GPR files to su format with a nominal geometry Thanks to: Hervé Perrou,d 12/2000and Dominique Rousset, 2019 of the Universith of Pau configs/Makefile.config_Linux_Ubuntu Makefile.config_Mac_OSX_Mojave Makefile.config_Linux_Fedora_32 Makefile.config_Linux_ARCH Makefile.config_MacOSX_Catalina Makefile.config_Mac_OSX_Big_SUR par/main/ordinary_differential_equations logisticfit.c - extract growth and carrying capacity for logistic model seirepidemic.c - SEIR epidemic model sirepidemic.c - SIR epidemic model sirdepidemic.c - SIRD epidemic model voltlotka.c - classic Lotka Volterra predator-prey model demos/Ordinary_differential_equations Epidemiology Logistic_Equation Predator_Prey Fixed: su/main/amplitudes/sugain.c - fixed a but in the AGC function seen on GPR data but not apparent on seismic data Thanks to Dominique Rousset of the University of Pau su/lib/getSPSfile.c - replaced // comments with /* comments */ owing to a problem on CENTOS version 7. Fortran/Vzest/vzestf.f - changed (about line 1119) to character*120 fnames(2) from fnames(3) Thanks to Fernando Roxo da Motta Fortran/Raytrace3d/ktime_3d_rayq.f - ERROR of argument mismatch in two locations. fix: added -fallow-argument-mismatch to the FFLAGS in Makefile.config_Big_Sur this might need to be propagated to all of the Makefile.config_* and this likely takes care of the vzestf.f error as well. Sfio/ Replaced these files with versions from the 2002 release of sfio. ./src/lib/sfio/Stdio_b/sprintf.c ./src/lib/sfio/Stdio_b/vsprintf.c ./src/lib/sfio/Stdio_s/stdsprintf.c The make sfio should work now. demos/Ordinary_differential_equations - has been added to go with the new ordinary_differential equation items in par/main John Stockwell | john.19071969(a)gmail.com https://wiki.Seismic-Unix.org (The New Home of Seismic Unix)

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Re: [Seisunix] Seisunix Digest, Vol 21, Issue 1
by mark lee 23 Jan '22

23 Jan '22

Dear all, I have worked it out. There is no issue. Best regards, Mark Sent from my iPhone > On 22 Jan 2022, at 13:00, seisunix-request(a)mailman.seismic-unix.org wrote: > > Send Seisunix mailing list submissions to > seisunix(a)mailman.seismic-unix.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://mailman.seismic-unix.org/listinfo/seisunix > or, via email, send a message with subject or body 'help' to > seisunix-request(a)mailman.seismic-unix.org > > You can reach the person managing the list at > seisunix-owner(a)mailman.seismic-unix.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Seisunix digest..." > > > Today's Topics: > > 1. Dual Pass De-ghosting in SU (mark lee) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 21 Jan 2022 18:31:58 +0000 (UTC) > From: mark lee <mark.lee336(a)yahoo.com> > To: "seisunix(a)mailman.seismic-unix.org" > <seisunix(a)mailman.seismic-unix.org> > Subject: [Seisunix] Dual Pass De-ghosting in SU > Message-ID: <626164105.457137.1642789918740(a)mail.yahoo.com> > Content-Type: text/plain; charset="utf-8" > > Hello, > Is the sudeghost module created solely for receiver de-ghosting or is it possible to apply a second pass of source de-ghosting setting h=source depth? I tried this but the resultant stack looked to add back data on the second pass when I set h=source depth. So I am unsure if the sudeghost module can deal with both receiver and source de-ghosting, or if there is a way or sequence to apply it correctly. > Best regards, > Mark >

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Dual Pass De-ghosting in SU
by mark lee 21 Jan '22

21 Jan '22

Hello, Is the sudeghost module created solely for receiver de-ghosting or is it possible to apply a second pass of source de-ghosting setting h=source depth? I tried this but the resultant stack looked to add back data on the second pass when I set h=source depth. So I am unsure if the sudeghost module can deal with both receiver and source de-ghosting, or if there is a way or sequence to apply it correctly. Best regards, Mark

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Seisunix January 2022