Welcome to Petroleum Geology Forums

This is a free online community that aims to bring petroleum professionals and geologists together and share valuable knowledge. Registration is easy so become a member now for instant free access.
  • Petroleum Geologists can stay up to date with industry related topics and exchange ideas and concepts.
  • Upstream Oil and Gas Consultants get a chance to share their expertise and gain exposure to land future projects.
  • Geology students and graduates can join the discussion and get into contact with potential future employees.

  >> Register Now





Post new topic Reply to topic  [ 1 post ] 
Numerical performances of a hybrid local‐time... 
Author Message

Joined: Fri Mar 11, 2011 9:00 pm
Posts: 14670
Post Numerical performances of a hybrid local‐time...
Geophysical Prospecting: Numerical performances of a hybrid local‐time stepping strategy applied to the reverse time migration

The numerical simulation of wave propagation in heterogeneous media involves very significant computational costs that can be considerably reduced by using finite elements whose order is adapted to the characteristics of the medium. In this paper, we show that we can further reduce these costs by using a mixed time scheme, combining two discrete formulas and using local time steps. We illustrate the effectiveness of the new scheme considering an application to seismic imaging treated by reverse time migration. We also show that the new scheme greatly reduces the numerical dispersion problems that appear frequently when adapting the orders of approximation in space only.

Go to Article


Fri Jun 24, 2011 9:17 am
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 





Search for:
Jump to:  


Content on EPGeology.com is intended for personal use only and to supplement, not replace, professional judgment. EPGeology.com disclaims any and all liability for your use of its content. As most of our content is supplied by our users we can not check copyright, and stress that copyright remains at the original owner. If you suspect copyright infringement please use the contact form to report it.
Contact || © EPGeology.com. || Powered by phpBB Asteroid Mining

phpBB SEO