Please use this identifier to cite or link to this item:
Authors: Volpe, M.* 
Melini, D.* 
Piersanti, A.* 
Title: Trade-off between seismic source detail and crustal heterogeneities in spherical 3D finite element modeling: a 2004 Sumatra earthquake case study
Journal: Annals of Geophysics 
Series/Report no.: 1/54(2011)
Issue Date: 2011
DOI: 10.4401/ag-4639
Keywords: Finite element method
Sumatra earthquake
Subject Classification04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics 
Abstract: Finite-element methods are a powerful numerical simulation tool for modeling seismic events, as they allow three-dimensional complex models to be solved. We used a three-dimensional finite-element approach to evaluate the co-seismic displacement field produced by the devastating 2004 Sumatra–Andaman earthquake, which caused permanent deformations that were recorded by continuously operating GPS networks in a region of unprecedented area. Previous analysis of the static displacement fields have focused on the heterogeneous distribution of moment release on the fault plane; our intention here is to investigate how much the presence of crustal heterogeneities trades-off seismic source details. To achieve this aim, we adopted a quite simple source model in modeling the event. The key feature of our analysis is the generation of a complex three-dimensional spherical domain. Moreover, we also carried out an accurate analysis concerning the boundary conditions, which are crucial for finite-element simulations.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat
4639-6860-1-PB.pdf1.45 MBAdobe PDFView/Open
Show full item record

Page view(s) 50

Last Week
Last month
checked on Apr 5, 2020

Download(s) 50

checked on Apr 5, 2020

Google ScholarTM