FY08 LDRD Final Report A New Method for Wave Propagation in Elastic Media LDRD Project Tracking Code: 05-ERD-079

Petersson, A

关键词: BOUNDARY CONDITIONS;    CALIFORNIA;    COMPUTER CODES;    EARTHQUAKES;    GROUND MOTION;    SEISMIC WAVES;    SIMULATION;    TOPOGRAPHY;    WAVE PROPAGATION;   

DOI  :  10.2172/947757
RP-ID  :  LLNL-TR-410310
PID  :  OSTI ID: 947757
Others  :  TRN: US200906%%99

美国|英语

来源: SciTech Connect

【 摘 要 】

The LDRD project 'A New Method for Wave Propagation in Elastic Media' developed several improvements to the traditional finite difference technique for seismic wave propagation, including a summation-by-parts discretization which is provably stable for arbitrary heterogeneous materials, an accurate treatment of non-planar topography, local mesh refinement, and stable outflow boundary conditions. This project also implemented these techniques in a parallel open source computer code called WPP, and participated in several seismic modeling efforts to simulate ground motion due to earthquakes in Northern California. This research has been documented in six individual publications which are summarized in this report. Of these publications, four are published refereed journal articles, one is an accepted refereed journal article which has not yet been published, and one is a non-refereed software manual. The report concludes with a discussion of future research directions and exit plan.