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This package contains 2 items:
WesternGeco is kindly acknowledged for permission to distribute their synthetic data.
MOSRP_SU is a software package based on and fully consistent with CWP/SU, composed of a variety of programs developed at M-OSRP.
The current release features:
This second version of the code (November, 2011) improves upon the initial release (Fall, 2008) at several levels:
An implementation of the Cagniard de Hoop method "Generation of acoustic waves by an impulsive line source in a fluid/solid configuration with a plane boundary" (A. T. de Hoop and J. H. M. T. van der Hijden, 1983), coded by J. Zhang and discussed in Zhang and Weglein (2006).
Release 1 of a planned series of releases of code designed to preprocess marine seismic data using Green's theorem is now available in the sponsor-only section of the M-OSRP website (mosrp.uh.edu).
Release 1 uses Green's theorem and measurements of P and its normal derivative to deghost P. It is assumed these are measured by a dual sensor cable or dual streamers.
Release 1 includes the Green's theorem code, two files containing analytic test data (P and its normal derivative), code to create additional analytic data, and user documentation. The new programs use data in the Seismic Unix format and integrate with all native SU programs.
The 3D free surface inverse scattering series (ISS) multiple removal code was written by Sam Kaplan in 2006. Before the code could be tested or documented, Sam Kaplan began his Ph.D. studies at the University of Alberta.The code was subsequently tested and debugged by Haiyan Zhang and Simon Shaw (ConocoPhillips), Sam Kaplan (University of Alberta), and Zhiqiang Wang (M-OSRP) and with Kris Innanen, the M-OSRPcontact/connection. The linked-to packages represent a current (summer,2009) snap-shot of the code-base. The code is undocumented, but is similar to the 2D free surface ISS multiple removal code, and whose documentation can be found on this web-page. Hence, an understanding of the 3D code should follow from an understanding of the 2D code. One notable exception is the slac library which now uses the GNU auto-tools (http://www.gnu.org/software/autoconf/) for installation.
For the M-OSRP internal multiple attenuation project, we test the code using synthetic data sets. To that end, we have finite difference code which produces data for an acoustic, isotropic and non-viscous 2D model, and a line source.
M-OSRP wavelet estimation using the extinction theorem.
Our implementation of the extinction theorem deghosting algorithm applicable to 1.5D and 2D data-sets.
Contact: Jingfeng Zhang (firstname.lastname@example.org)
M-OSRP free surface multiple elimination code applicable to 2D and 1.5D data sets.
M-OSRP internal multiple attenuation code applicable to 2D and 1.5D data sets.
Current Version (1):
Current Version (2):
This version of the IMA code is written for and tested with the IBM Blue Gene architecture. However, it likely also applicable to any large scale distributed computing system, and we encourage its use, as such.
ICA Adaptive Subtraction:
M-OSRP adaptive subtraction code applicable to the inverse scattering series free surface multiple elimination algorithm.
Dr. Ken Matson - MOSRP Multiple Attenuation Review: