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How to handle trace header information?
by tanahashi.m＠gmail.com 11 Nov '22

11 Nov '22

Dear all, I have performed a time resample of some 500ns sampled 3D seismic data to 1ms intervals using the suresamp command as shown below, but was unable to transcribe the 189-192 bytes of the Inline and the 192-196 bytes of the crossline numbers. segyread tape=Source3D.sgy|suresamp rf=0.5|segyhdrs|segywrite tape=Output3D_1ms.sgy I solved this problem by using the ASCII input/output function for trace header on SeiSee, a free Windows software, to write out the header information of the original file and then write it into the header of the output file. Is there a way to transcribe inline and crossline numbers using the SU function? Manabu Tanahashi Tsukuba, Japan

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Help with Adding Offset Header in a SU File
by eloraafrin5＠gmail.com 27 Oct '22

27 Oct '22

Hello, I am a beginner. I need to apply sureduce command to a particular shot which is in su file format. I tried with different rv values but could not see any differences in the image. I checked with the headers of that file and found I have ns and dt headers but not offset. Can anyone please help me how can I add offset header to my su file? And please let me know if there are any other things to fix to get result. Thanks

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test message. Discard. Sorry
by Dominique ROUSSET 19 Oct '22

19 Oct '22

testing archiving of new messages -- |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 http://lfc.univ-pau.fr| | Off: +33 559 407 423 Cell: +33 660 861 391 |

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The SU list manager is (at least partly) broken
by Dominique ROUSSET 17 Oct '22

17 Oct '22

Hi SU users The SU list manager is broken. At least no new subscription is possible. The las one is dated 09/23. Sticking to mailman2 inhibits the upgrade of the whole hosting system (yunohost.org). I plan to upgrade to mailman3 soon, keeping as much information as possible from the present mail server. Don't worry if you receive automatic or test messages in the next hours or days. D. BTW: I don't know if this message will be transmitted :-) -- |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 http://lfc.univ-pau.fr| | Off: +33 559 407 423 Cell: +33 660 861 391 |

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suximage error
by Subbarao Yelisetti 24 Sep '22

24 Sep '22

Dear all, I am trying to open a 12Gb byte sgy/su file using seismic unix, and I get the below error message. /home/subbarao/SU43R3/bin/ximage: ealloc.c: malloc failed (Cannot allocate memory) Is there a file size limitation in SU? or is the error related to display or something? Do I need to change any settings? Thank you and look forward to your early response. Cheers, Subbarao. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dr. Subbarao Yelisetti Associate Professor of Geophysics Graduate Coordinator for Petrophysics Department of Physics and Geosciences Texas A&M University - Kingsville Hill Hall 207 MSC 175, 700 University Blvd Kingsville, Texas 78363-8202 Phone: 361-593-4894 web: https://www.tamuk.edu/artsci/departments/phge/faculty/yelisetti.html

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Seismic merge
by nickag64759＠gmail.com 16 Jun '22

16 Jun '22

Dear Sirs, I have some scanned seismic image I am converting in segy data format. Having all sections the same number of time sample and the same sample interval, but of course different trace number, I need to have only one segy. May I apply a command like: cat section1.su section2.su section.su > onesection.su If it is possible, then I need to renumber the trace number and I think to use sushw module but I do not find which is the key word to renumber the trace number. Thanks to All. Giulia

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Questions related to Seaview
by N.Gülünay 19 May '22

19 May '22

I need to use CSM program seaview to display f-k plots and I have various questions related to seaview. I will appreciate your answers on them. - current palettes (map) for variable intensity plot sub option of display option of seaview are very limited. - is it possible to build and install new palettes. If so how? - if yes, does anyone have aleady built better palettes(maps)? - Is it possible to change vertical plot label from "Time(seconds)" to "Frequency(Hertz)". İf yes., how? - when trace samples really show frequencies instead of time samples (as in f-k plot) using actual frequency interval (eg 0.115 Hz) makes highest frequency to show like 0.125 ms or 0.250 ms. I would have preferred 125ms and 250ms (although I would prefer 125Hz and 250Hz) but using 1000 times frequecy increment is creating problems in binary header value in microsecond with seaview (ıt shows as a negative value). This must be a bug in seaview. Do any of you have a similar experience? Necati Gülünay n.gulunay(a)protonmail.com +90 541 842 0069 Web. https://www.seisdatapro.com Sent with [ProtonMail](https://protonmail.com/) secure email. ------- Original Message ------- On Monday, May 9th, 2022 at 19:11, rob <rob(a)xsgeo.com> wrote: > I compiled a short blog on WSL recently for seismic unix. In my view it's the best Windows option in 2022. > > Regards > > Rob > > https://tonnta-energy.com/wp/seismic-unix-on-windows/ > Sent from my Galaxy > > -------- Original message -------- > From: Dominique ROUSSET <dominique.rousset(a)univ-pau.fr> > Date: 09/05/2022 16:31 (GMT+00:00) > To: seisunix(a)mailman.seismic-unix.org > Subject: Re: [Seisunix] Request of information > Hi Giulia, > As you can read, seismic unix is easy to install and run on... unix-like systems (mainly linux and mac os). > > Some people have used it natively on windows using Cygwin (https://www.cygwin.com/). Cygwin will bring a bunch of software to windows in order to mimic a unix system. I hope someone on the list can help you with this. > > An other way to run SU on a MS-Windows PC is to use virtualization, running WSL2 on windows (or virtualbox, vmware slower than WSL2 but maybe more portable). In that case you will run a linux over windows system, with potential sharing of your disk and peripherals between the windows host and the linux guest. WSL2 is a genuine microsoft software while virtualbox is free/libre software. It seems that WSL2 has been improved on recent windows releases (the X-server is now included. To be verified). I'm sure that numerous users on this list use wsl2. > > I hope it helps ! > > D. > > Le 09/05/2022 à 17:12, nickag64759(a)gmail.com a écrit : > >> Dear sirs, >> >> I am a university student in Geology and I am interested in the use of cwp-su package. >> >> I would like to use it on my Windows 10 64 bit PC: does cwp-su be used on that kind of platform ? >> >> In the case which is/are the requirements ? >> >> Thanks in advance for your help. >> >> Regards >> >> Giulia >> >> _______________________________________________ >> 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|

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Request of information
by nickag64759＠gmail.com 11 May '22

11 May '22

Dear sirs, I am a university student in Geology and I am interested in the use of cwp-su package. I would like to use it on my Windows 10 64 bit PC: does cwp-su be used on that kind of platform ? In the case which is/are the requirements ? Thanks in advance for your help. Regards Giulia

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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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Doubly defined global variable
by Ricardo Biloti 29 Mar '22

29 Mar '22

Hi folks I've been trying to compile SU R22..24 on a Debian 11 with gcc 10.2.1 (20210110), but there is an error. make[4]: Entering directory '/usr/local/stow/su/src/su/main/filters' /usr/bin/gcc -I/usr/local/stow/su//include -g -m64 -Wno-long-long -DCWP_LITTLE_ENDIAN sulfaf.c -L/usr/local/stow/su//lib -lsu -lpar -lcwp -lm -o /usr/local/stow/su//bin/sulfaf */usr/bin/ld: /usr/local/stow/su//lib/libsu.a(fputgthr.o):/usr/local/stow/su/src/su/lib/fputgthr.c:51: multiple definition of `tr'; /usr/local/stow/su//lib/libsu.a(fgetgthr.o):/usr/local/stow/su/src/su/lib/fgetgthr.c:66: first defined here* collect2: error: ld returned 1 exit status make[4]: [Makefile:35: /usr/local/stow/su//bin/sulfaf] Error 1 (ignored) chmod: cannot access '/usr/local/stow/su//bin/sulfaf': No such file or directory The source for this bug is that the global variable tr is defined in src/su/lib/fgetgthr.c as well as in src/su/lib/fputgthr.c. Both objects are combined to build libsu.a. After a little googling, I found out that gcc 10.2 set -fnocommon as default now. So, adding -fcommon in Makefile.config fix the issue, but perhaps a better fix would be to place an extern across the multiple definitions of tr. Kind regards, R.Biloti Applied Math. Department IMECC/UNICAMP

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