Home /Software Release 2016 (April 12, 2016)

Software Release 2016 (April 12, 2016)

Software Releases - April 2016

  1. Time-domain least-squares reverse-time migration (LS-RTM) with sparsity promotion. (beta in master branch) This software contains our version of sparsity-promoting least-squares RTM in the time domain. We use the linearized Bregman method, as the solver for the sparsity-promoting optimization problem. The use of linearized Bregman allows us, while maintaining convergence, to subsample the sources during each iteration, thus limiting the usual high cost of LS-RTM. We thereby reduce the overall number of PDE solves by a factor of \(10\) or more. For questions contact Philipp Witte. [Read more][GitHub]
  2. MATLAB interface to running iWAVE. (beta in master branch) MATLAB toolbox for iWAVE++. With this toolbox, users may simulate the time-domain acoustic wave data, Born linearized data and its adjoint. This application also provides simple examples to do time-domain RTM, least-squares migration and FWI. For questions contact Zhilong Fang. [GitHub]
  3. Examples for using iWAVE interface for different applications. (beta in master branch) This application provides a set of examples of using MATLAB toolbox for iWAVE++. With this application, users are able to simulate the time-domain acoustic wave data, Born linearized data and its adjoint. This application also provides simple examples to do time-domain RTM, least-squared migration and FWI. For questions contact Zhilong Fang. [Read more][GitHub]
  4. Code-efficiency/stability updates. (in master branch) Numerous changes aiming at increasing code efficiency and stability, notably in modeling toolboxes: [2D Frequency-domain acoustic modeling], [3D Frequency-domain acoustic modeling], and [Time-domain modeling].
  5. RunApplication helper function. (beta in master branch) A provided MATLAB function RunApplication [GitHub] helps running applications in our software release, in both interactive and batch mode. It ensures that: 1) appropriate toolboxes are added before application is being used, and 2) that the application is executed in proper location.
  6. Examples of constrained FWI in time-domain frequency-domain and time-domain. (beta in master branch) This application contains one frequency-domain and one time-domain example of the constrained FWI toolbox on the same simple 2D model. Each of the example highlights how to setup the available constraints and how to include it in FWI. For questions contact Bas Peters or Mathias Louboutin. [Read more] [GitHub]
  7. Case study for Chevron 2012 blend test data set. This release contains setup scripts and the starting model obtained by first-break travel-time inversion for the 2012 Chevron data set. For questions contact Zhilong Fang. [GitHub]