Use of Fast Multipoles For Earthquake Modeling
Problem Common to Many Fault Mechanics Numerical Computations
Outline of Talk
Present Parkfield Model Includes
Example of Grid for Parkfield
Hypocenter with 3 Sized Cells
10 Years Before - Everything Quiet
1 hour Before - Hypocenter Cell 1000x Ave.
1 Min. Before - Hypocenter Cell 105 x Ave.
Fastest Strain Rate on Surface
Increase of Slip Rate Before EQ
Possibility for Predicting Time
Overlay of Parkfield Microseismicity
Summary of Previous Results
Idea of Multipole Approximation
Hierarchical Structure of Multipoles
Spatially Adaptive Character of Multipole Approach
Additional Approaches to Make it Fast
Space Filling Curves
A Library Exists That Implements The Fast Multipole Method
Steps Taken
Execution Time vs. Number of Elements
PPT Slide
Future
Conclusions
Email: Terry_Tullis@brown.edu
Home Page: www.geo.brown.edu/faculty/ttulllis/index.html