[cig-commits] r18851 - seismo/3D/SPECFEM3D/trunk

[dkomati1 at geodynamics.org]

Author: dkomati1
Date: 2011-08-26 09:39:48 -0700 (Fri, 26 Aug 2011)
New Revision: 18851

Modified:
   seismo/3D/SPECFEM3D/trunk/todo_list_please_dont_remove.txt
Log:
added a second comment about fixing the RK4 scheme for attenuation one day.


Modified: seismo/3D/SPECFEM3D/trunk/todo_list_please_dont_remove.txt
===================================================================
--- seismo/3D/SPECFEM3D/trunk/todo_list_please_dont_remove.txt	2011-08-26 08:02:00 UTC (rev 18850)
+++ seismo/3D/SPECFEM3D/trunk/todo_list_please_dont_remove.txt	2011-08-26 16:39:48 UTC (rev 18851)
@@ -27,6 +27,9 @@
 We should fix that one day. The only thing to do would be to design a better
 time integration scheme for the attenuation equation, without that trick; the rest
 (Newmark etc) is fine and does not need to change.
+Daniel Peter did not fix that in 2011; he only fixed the old implementation in SPECFEM3D which used a
+fixed period absorption band to an adaptive one, which uses the resolved
+periods of the mesh (as is done in the global version). The time stepping of the memory variables did not change.
 
 - we could add support for the TetGen mesh creation package, and cut each
 tetrahedron into four hexahedra using the barycenter. This could help design