Block Modeling with Connected Fault-Network Geometries and a Linear Elastic Coupling Estimator in Spherical Coordinates

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Block Modeling with Connected Fault-Network Geometries and a Linear Elastic Coupling Estimator in Spherical Coordinates

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dc.contributor.author Meade, Brendan J.
dc.contributor.author Loveless, Jack
dc.date.accessioned 2010-07-20T19:50:22Z
dc.date.issued 2009
dc.identifier.citation Meade, Brendan J., and John P. Loveless. 2009. Block modeling with connected fault-network geometries and a linear elastic coupling estimator in spherical coordinates. Bulletin of the Seismological Society of America 99(6): 3124-3139. en_US
dc.identifier.issn 0037-1106 en_US
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:4315068
dc.description.abstract Geodetic observations of interseismic deformation provide constraints on the partitioning of fault slip across plate boundary zones, the spatial distribution of both elastic and inelastic strain accumulation, and the nature of the fault system evolution. Here we describe linear block theory, which decomposes surface velocity fields into four components: (1) plate rotations, (2) elastic deformation from faults with kinematically consistent slip rates, (3) elastic deformation from faults with spatially variable coupling, and (4) homogeneous intrablock strain. Elastic deformation rates are computed for each fault segment in a homogeneous elastic half-space using multiple optimal planar Cartesian coordinate systems to minimize areal distortion and triangular dislocation elements to accurately represent complex fault system geometry. Block motions, fault-slip rates, elastic coupling, and internal block strain rates are determined simultaneously using a linear estimator with constraints from both geodetically determined velocity fields and geologic fault-slip rate estimates. We also introduce algorithms for efficiently implementing alternative fault-network geometries to quantify parameter sensitivity to nonlinear perturbations in model geometry. en_US
dc.description.sponsorship Earth and Planetary Sciences en_US
dc.language.iso en_US en_US
dc.publisher Seismological Society of America en_US
dc.relation.isversionof doi:10.1785/0120090088 en_US
dc.relation.hasversion http://summit.fas.harvard.edu/~meade/meade/Publications_files/MeadeAndLovelessBssa2009BlockTheory.pdf en_US
dash.license META_ONLY
dc.subject Southern California en_US
dc.subject triangular dislocation elements en_US
dc.subject positioning system measurements en_US
dc.subject California shear zone en_US
dc.subject strain accumulation en_US
dc.subject crustal deformation en_US
dc.subject slip rates en_US
dc.title Block Modeling with Connected Fault-Network Geometries and a Linear Elastic Coupling Estimator in Spherical Coordinates en_US
dc.type Journal Article en_US
dc.description.version Version of Record en_US
dc.relation.journal Bulletin of the Seismological Society of America en_US
dash.depositing.author Meade, Brendan J.
dash.embargo.until 10000-01-01

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  • FAS Scholarly Articles [7501]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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