Statistics – Computation
Scientific paper
Jun 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009geoji.177.1221i&link_type=abstract
Geophysical Journal International, Volume 177, Issue 3, pp. 1221-1232.
Statistics
Computation
2
Numerical Solutions, Numerical Approximations, Earthquake Ground Motions, Computational Seismology, Wave Propagation
Scientific paper
This paper is concerned with a finite element method that uses hybrid meshes of multiresolution structured and unstructured meshes to simulate earthquake ground motion in large basins. While standard octree-based mesh methods use cubic elements and rely on mesh refinement to model topography, the present hybrid meshes use tetrahedral elements to model complicated layer interfaces and above-ground surfaces and to provide a transition between cubic elements of different sizes. The hybrid meshes avoid the step-like character inherent to the cubic meshes and the resulting concomitant loss of accuracy. Several numerical experiments of increasing complexity are carried out to verify and illustrate the proposed technique.
Bielak Jacobo
Hori Masaki
Ichimura T.
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