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Purpose :The Fortran95 program package 2DFD_DVS is designed for numerical simulation of seismic wave propagation in 2D heterogeneous structures with planar free surface due to linear double-couple source or linear single force or plane-wave incidence.
Authors :Peter FRANEK, Peter MOCZO, Jozef KRISTEK
Code level :research
E-mail :
Available : 2DFD_DVS
version August 15, 2011 (user's guides, source codes)
Reference to the program : The user is asked to make reference to

   Moczo, P., Kristek, J., Galis, M., Pazak, P.,
   Balazovjech, M., 2007.
   The Finite-Difference and Finite-Element Modeling of
   Seismic Wave Propagation and Earthquake Motion.
   Acta Physica Slovaca 57, 177-406.

   Moczo, P., Kristek, J., Galis, M., 2004.
   Simulation of planar free surface with near-surface lateral
   discontinuities in the finite-difference modeling of seismic
   Bull. Seism. Soc. Am. 94, 760-768.

   Kristek, J., Moczo, P., 2003.
   Seismic wave propagation in viscoelastic media with
   material discontinuities a 3D 4th-order staggered-grid
   finite-difference modeling.
   Bull. Seism. Soc. Am. 93, 2273-2280.

   Kristek, J., Moczo, P., Archuleta, R. J., 2002.
   Efficient methods to simulate planar free surface in
   the 3D 4th-order staggered-grid finite-difference schemes.
   Studia Geophys. Geod. 46, 355-381.

in case that he/she publishes results obtained with the program because the program itself is not published.
Acknowledgements: The program package has been developed within the 6th Framework Program, Marie Curie Research Training Network SPICE, project OPTIMODE, the Slovak Research and Development Agency contract No. APVV-0435-07, and VEGA Project 1/4032/07.