CWP/SU:Seismic Un*x   Release 41              10 May 2008
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Open source software for seismic research and seismic processing.
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You may download the codes from:
http://www.cwp.mines.edu/cwpcodes

You may join the listserver group at:
http://www.cwp.mines.edu/mailman/listinfo/seisunix


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3500+ installations verified by direct email,
10 to 20 downloads per day
525 members of the 
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New collection of codes:  SLT/SU: Seismic Laboratory Tools (from Sugarland Texas)
This collection of codes is the work of many geophysicists, including
Zhiming Li, Rick Ottelini and others, most recently Reg Beardsley. 
Through the generosity of Chevron, these codes have been donated to 
the Colorado School of Mines and the Center for Wave Phenomena for 
general distribution in the hopes that it will prove useful to students 
and research scientists everywhere.

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New codes include:
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par/main/cellauto.c - a 2D cellular automata program for generating 
        rough velocity models with voids
	Thanks to Chris Liner - Unversity of Houston
par/main/pdfhistogram - generate a HISTOGRAM of the Probability Density 
        originally Function from the SLTSU package 
	Thanks to Reg Beardsley of Exploration Software Consultants Inc.
par/main/utmconv - Convert latitude and longitude into UTM 
           (Universal Transverse Mercator) coordinates
	Thanks to Nils Maercklin,  RISSC, University of Naples, Italy. 
su/main/segyhdrmod.c - change the text header in an SEGY format file
	Thanks to Reg Beardsley of Exploration Software Consultants Inc.
su/main/susehw.c - Set the value the Header Word denoting trace number 
         within an Ensemble defined by the value of another header word
         (allows cdpt to be set from cdp as the default)
	CWP: John Stockwell
su/main/suutm.c -  UTM projection of longitude and latitude in SU trace headers
	Thanks to Nils Maercklin,  RISSC, University of Naples, Italy. 
su/main/suwindpoly.c - WINDow SU format data on a POLYgon defined by a
        user-specified key headerword value (Originally suxarb.c from
	the SLT/SU package).
	Thanks to Reg Beardsley of Exploration Software Consultants Inc.
demos/Synthetic/Finite_Difference/Suea2df - new set of demos made
	CWP: John Stockwell
demos/Statics/Residual_Statics/Suresstat.pdf - commentary on performing
	residual statics with "suresstat".
	Thanks to Abdullatif al-Shuhail of KFUPM

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Changes to the codes include:
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psplot/lib/psCurveDraw.c
psplot/main/pswigb.c
psplot/main/pswigp.c
psplot/main/psimage - Added dashed line options
		Thanks to Ekkehart Tessmer of
		ZMAW (Center for Marine and Atmospheric Science), Hamburg.
xplot/main/xwigb.c - kludge to fix the window crashing caused by the
        Xorg security fix in the X-windows subroutine XCreateImage.
	Thanks to Dominque Rousset, Nils Mearcklin, Fernando Roxo, and
        other participants of the seisunix listserver group.
par/main/farith.c - cos, sin, degrees to radians, radians to degrees
par/main/unif2aniso.c - a number of additions with regard to the anisotropy
	by Zhu Zhaolin of Tongji University.
par/main/unif2aniso.c - added the Q file stuff
	CWP: John Stockwell
su/main/las2su.c - updated to include Chris Liner's contributions
	Thanks to: Chris Liner, University of Houston
su/main/segyread.c -
su/main/segywrite.c - now automatically detect endian of machine on which
	the program is being run. 
	Thanks to Stew Levin of Landmark.
su/main/suwaveform.c - added Gaussian and Gaussian derivative waveforms
	Thanks to Nils Maercklin,  RISSC, University of Naples, Italy. 
su/main/suazimuth.c - scalco now honored.
	Thanks to:  Joachim Mispel of Statoil.
su/main/suea2df.c - Q-option added 
	Thanks to: Chris Juhlin, Unversity of Upsala Sweden
su/main/suea2df.c - more explicit information in the selfdoc regarding
	the rhofile= option
	CWP: John Stockwell, owing to questions by Yongxia Liu
su/main/sumax.c - changed output format to prevent small amplitudes to
        be rendered as 0.0.
	Thanks to Ekkehart Tessmer of
		ZMAW (Center for Marine and Atmospheric Science), Hamburg.
su/main/sumiggbzo.c - explicit casts on the dbx and nxb parameters.
	CWP: John Stockwell
su/main/suresstat.c - additional details in selfdoc based on Suresstat.pdf
	Thanks to Abdullatif al-Shuhail of KFUPM
su/main/suztot.c - the program did not really work as advertised owing
	to a small bug.
	Thanks to Dominque Rousset of the University of Pau, France
	

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My thanks to all of the users of SU for your thoughtful questions
and suggestions. 

			-John Stockwell   (10 Aug 2007)
		

John Stockwell	 | jstockwe@mines.edu
Center for Wave Phenomena (The Home of Seismic Un*x)
Colorado School of Mines
Golden, CO 80401 | http://www.cwp.mines.edu/cwpcodes
voice: (303) 273-3049

Our book:
Norman Bleistein, Jack K. Cohen, John W. Stockwell Jr., [2001],
Mathematics of multidimensional seismic imaging, migration, and inversion,
(Interdisciplinary Applied Mathematics, V. 13.), Springer-Verlag, New York.
