A 2D numerical model for simulating the physics of fault systems

Mora, P. R. and Weatherley, D. K. (2003) A 2D numerical model for simulating the physics of fault systems. Lecture Notes in Computer Science, 2659 Part III: 817-826.

Author Mora, P. R.
Weatherley, D. K.
Title A 2D numerical model for simulating the physics of fault systems
Journal name Lecture Notes in Computer Science   Check publisher's open access policy
ISSN 0302-9743
ISBN 03029743/3540401962
Publication date 2003
Sub-type Article (original research)
Volume 2659
Issue Part III
Start page 817
End page 826
Total pages 10
Editor G. Goos
Place of publication Berlin, Heidleberg
Publisher Springer-verlag Berlin
Collection year 2003
Language eng
Subject C1
Abstract Simulations provide a powerful means to help gain the understanding of crustal fault system physics required to progress towards the goal of earthquake forecasting. Cellular Automata are efficient enough to probe system dynamics but their simplifications render interpretations questionable. In contrast, sophisticated elasto-dynamic models yield more convincing results but are too computationally demanding to explore phase space. To help bridge this gap, we develop a simple 2D elastodynamic model of parallel fault systems. The model is discretised onto a triangular lattice and faults are specified as split nodes along horizontal rows in the lattice. A simple numerical approach is presented for calculating the forces at medium and split nodes such that general nonlinear frictional constitutive relations can be modeled along faults. Single and multi-fault simulation examples are presented using a nonlinear frictional relation that is slip and slip-rate dependent in order to illustrate the model.
Keyword Computer Science, Theory & Methods
Q-Index Code C1

 
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Created: Mon, 13 Aug 2007, 13:44:47 EST