Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105359
Title: Gamra : simple meshing for complex earthquakes
Authors: Landry, Walter
Barbot, Sylvain
Keywords: Science::Geology
Immersed Interface Method
Earthquakes
Issue Date: 2016
Source: Landry, W., & Barbot, S. (2016). Gamra: Simple meshing for complex earthquakes. Computers & Geosciences, 90, 49-63. doi:10.1016/j.cageo.2016.02.014
Series/Report no.: Computers & Geosciences
Abstract: The static offsets caused by earthquakes are well described by elastostatic models with a discontinuity in the displacement along the fault. A traditional approach to model this discontinuity is to align the numerical mesh with the fault and solve the equations using finite elements. However, this distorted mesh can be difficult to generate and update. We present a new numerical method, inspired by the Immersed Interface Method (Leveque and Li, 1994), for solving the elastostatic equations with embedded discontinuities. This method has been carefully designed so that it can be used on parallel machines on an adapted finite difference grid. We have implemented this method in Gamra, a new code for earth modeling. We demonstrate the correctness of the method with analytic tests, and we demonstrate its practical performance by solving a realistic earthquake model to extremely high precision.
URI: https://hdl.handle.net/10356/105359
http://hdl.handle.net/10220/49516
ISSN: 0098-3004
DOI: 10.1016/j.cageo.2016.02.014
Rights: © 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EOS Journal Articles

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