...report
http://sep2.stanford.edu/data/media/private/docs/sep108
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...paper.
email: berryman@sep.stanford.edu It appears that another possibility would be to use the Rytov approximation, and establish a linear relation between the slowness and phase perturbations. This method, however, is somewhat more problematic, since it may involve phase unwrapping of complex wavefields. It remains, however, an interesting area for future research.

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...Borcea,
Computational and Applied Mathematics, MS 134, Rice University, 6100 Main Street, Houston, TX 77005-1892. email: borcea@caam.rice.edu
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...Papanicolaou,
Mathematics Dept., Stanford University, Stanford, CA 94305. email: papanico@georgep.stanford.edu
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...Tsogka
CNRS/LMA, 31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, FRANCE. email: tsogka@lma.cnrs-mrs.fr
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...set
The Michelson Doppler Imager, http://soi.stanford.edu/results/heliowhat.html
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...PASSCAL
Program for the Array Seismic Studies of the Continental Lithosphere, http://www.passcal.nmt.edu/iris/passcal/passcal.htm
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...MDI
The Michelson Doppler Imager, http://soi.stanford.edu/results/heliowhat.html
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...available
http://www.iris.washington.edu/PASSCAL/data_reports/1996/96-004.pdf
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...MP
Open MP http:www.openmp.org
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...MPI
Message Passing Interface http:www.mpi-forum.org
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...(AVS)
http://www.avs.com
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...Toolkit(VTK)
http://www.kitware.com/vtk.html
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...Explorer
www.nag.co.uk/Welcome_IEC.html
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...Explorer
www.ibm.com/dx
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...Khoros
www.khoral.com
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...OpenGL
www.opengl.org
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...Direct3D
www.microsoft.com
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...Phigs
http://www.gsi.de/computing/unix/primer/graphical_tools/subsection3.1.1.html
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...GKS-3D
web.ansi.org
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...GOCAD
http://www.gocad.com/
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...(PVFS)
http://parlweb.parl.clemson.edu/pvfs/index.html
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...dhcp
http://www.dhcp.org/
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...System
http://www.openpbs.org/
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...interface.
http://sepwww.stanford.edu/sep/bob/sep.html
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...ATT
http://www.uk.research.att.com/vnc/
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...Seti@home
http://setiathome.ssl.berkeley.edu/
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Stanford Exploration Project
6/7/2002