Insights into the 3D architecture of an active caldera ring-fault at Tendürek volcano through modeling of geodetic data

Handle URI:
http://hdl.handle.net/10754/579155
Title:
Insights into the 3D architecture of an active caldera ring-fault at Tendürek volcano through modeling of geodetic data
Authors:
Vasyura-Bathke, Hannes ( 0000-0002-3826-0663 ) ; Nikkhoo, M. ( 0000-0002-1077-454X ) ; Holohan, E.P.; Walter, T.R.
Abstract:
The three-dimensional assessment of ring-fault geometries and kinematics at active caldera volcanoes is typically limited by sparse field, geodetic or seismological data, or by only partial ring-fault rupture or slip. Here we use a novel combination of spatially dense InSAR time-series data, numerical models and sand-box experiments to determine the three-dimensional geometry and kinematics of a sub-surface ring-fault at Tendürek volcano in Turkey. The InSAR data reveal that the area within the ring-fault not only subsides, but also shows substantial westward-directed lateral movement. The models and experiments explain this as a consequence of a ‘sliding-trapdoor’ ring-fault architecture that is mostly composed of outward-inclined reverse segments, most markedly so on the volcano's western flanks but includes inward-inclined normal segments on its eastern flanks. Furthermore, the model ring-fault exhibits dextral and sinistral strike-slip components that are roughly bilaterally distributed onto its northern and southern segments, respectively. Our more complex numerical model describes the deformation at Tendürek better than an analytical solution for a single rectangular dislocation in a half-space. Comparison to ring-faults defined at Glen Coe, Fernandina and Bárðarbunga calderas suggests that ‘sliding-trapdoor’ ring-fault geometries may be common in nature and should therefore be considered in geological and geophysical interpretations of ring-faults at different scales worldwide.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Insights into the 3D architecture of an active caldera ring-fault at Tendürek volcano through modeling of geodetic data 2015, 422:157 Earth and Planetary Science Letters
Publisher:
Elsevier BV
Journal:
Earth and Planetary Science Letters
Issue Date:
28-Apr-2015
DOI:
10.1016/j.epsl.2015.03.041
Type:
Article
ISSN:
0012821X
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0012821X15001909
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorVasyura-Bathke, Hannesen
dc.contributor.authorNikkhoo, M.en
dc.contributor.authorHolohan, E.P.en
dc.contributor.authorWalter, T.R.en
dc.date.accessioned2015-10-04T12:15:49Zen
dc.date.available2015-10-04T12:15:49Zen
dc.date.issued2015-04-28en
dc.identifier.citationInsights into the 3D architecture of an active caldera ring-fault at Tendürek volcano through modeling of geodetic data 2015, 422:157 Earth and Planetary Science Lettersen
dc.identifier.issn0012821Xen
dc.identifier.doi10.1016/j.epsl.2015.03.041en
dc.identifier.urihttp://hdl.handle.net/10754/579155en
dc.description.abstractThe three-dimensional assessment of ring-fault geometries and kinematics at active caldera volcanoes is typically limited by sparse field, geodetic or seismological data, or by only partial ring-fault rupture or slip. Here we use a novel combination of spatially dense InSAR time-series data, numerical models and sand-box experiments to determine the three-dimensional geometry and kinematics of a sub-surface ring-fault at Tendürek volcano in Turkey. The InSAR data reveal that the area within the ring-fault not only subsides, but also shows substantial westward-directed lateral movement. The models and experiments explain this as a consequence of a ‘sliding-trapdoor’ ring-fault architecture that is mostly composed of outward-inclined reverse segments, most markedly so on the volcano's western flanks but includes inward-inclined normal segments on its eastern flanks. Furthermore, the model ring-fault exhibits dextral and sinistral strike-slip components that are roughly bilaterally distributed onto its northern and southern segments, respectively. Our more complex numerical model describes the deformation at Tendürek better than an analytical solution for a single rectangular dislocation in a half-space. Comparison to ring-faults defined at Glen Coe, Fernandina and Bárðarbunga calderas suggests that ‘sliding-trapdoor’ ring-fault geometries may be common in nature and should therefore be considered in geological and geophysical interpretations of ring-faults at different scales worldwide.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0012821X15001909en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Earth and Planetary Science Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Earth and Planetary Science Letters, 28 April 2015. DOI: 10.1016/j.epsl.2015.03.041en
dc.subjectring-fault architectureen
dc.subjectcaldera subsidenceen
dc.subjectTendürek volcanoen
dc.subjectboundary element modelingen
dc.subjectInSARen
dc.titleInsights into the 3D architecture of an active caldera ring-fault at Tendürek volcano through modeling of geodetic dataen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalEarth and Planetary Science Lettersen
dc.eprint.versionPost-printen
dc.contributor.institutionHelmholtz-Centre Potsdam, GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germanyen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorVasyura-Bathke, Hannesen
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