Show simple item record

dc.contributor.authorLiu, Yuan-Kai
dc.contributor.authorRuch, Joel
dc.contributor.authorVasyura-Bathke, Hannes
dc.contributor.authorJonsson, Sigurjon
dc.date.accessioned2019-09-10T11:43:25Z
dc.date.available2019-09-10T11:43:25Z
dc.date.issued2019-09-04
dc.identifier.doi10.1016/j.epsl.2019.115784
dc.identifier.urihttp://hdl.handle.net/10754/656712
dc.description.abstractCaldera unrest can lead to major volcanic eruptions. Analysis of subtle subsidence or inflation at calderas helps understanding of their subsurface volcanic processes and related hazards. Several subsiding calderas have shown similar patterns of ground deformation composed of broad subsidence affecting the entire volcanic edifice and stronger localized subsidence focused inside the caldera. Physical models of internal deformation sources used to explain these observations typically consist of two magma reservoirs at different depths in an elastic half-space. However, such models ignore important subsurface structures, such as ring faults, that may influence the deformation pattern. Here we use both analog subsidence experiments and boundary element modeling to study the three-dimensional geometry and kinematics of caldera subsidence processes, evolving from an initial downsag to a later collapse stage. We propose that broad subsidence is mainly caused by volume decrease within a single magma reservoir, whereas buried ring-fault activity localizes the deformation within the caldera. Omitting ring faulting in physical models of subsiding calderas and using multiple point/sill-like sources instead can result in erroneous estimates of magma reservoir depths and volume changes.
dc.description.sponsorshipWe thank Prof. Sigurdur Thoroddsen, Dr. Nadia Kouraytem, Dr. Andres A. Aguirre-Pablo, and Aditya Jetly in the High-Speed Fluids Imaging Laboratory at King Abdullah University of Science and Technology (KAUST) for providing camera equipment and laboratory facilities for our analog experiments. The granular material used in the analog experiments was provided by Dr. Daniele Trippanera (Roma Tre University, now at KAUST). We also thank Mehdi Nikkhoo for fruitfull discussions as well as Yosuke Aoki and one anonymous reviewer that helped to improve the quality of the manuscript. The research reported in this publication was supported by KAUST, award number BAS/1/1353-01-01.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0012821X19304765
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, [[Volume], [Issue], (2019-09-04)] DOI: 10.1016/j.epsl.2019.115784 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectvolcanic deformation
dc.subjectring faulting
dc.subjectcaldera collapse
dc.subjectanalog models
dc.subjectboundary element modeling
dc.subjectInSAR
dc.titleInfluence of ring faulting in localizing surface deformation at subsiding calderas
dc.typeArticle
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalEarth and Planetary Science Letters
dc.rights.embargodate2021-09-05
dc.eprint.versionPost-print
dc.contributor.institutionNow at Seismological Laboratory, California Institute of Technology, Pasadena, CA 91125, USA
dc.contributor.institutionNow at Department of Earth Sciences, University of Geneva, 1205 Geneva, Switzerland
dc.contributor.institutionNow at Institute of Geosciences, University of Potsdam, 14476 Potsdam, Germany
kaust.personLiu, Yuan-Kai
kaust.personRuch, Joel
kaust.personVasyura-Bathke, Hannes
kaust.personJonsson, Sigurjon
kaust.grant.numberBAS/1/1353-01-01
refterms.dateFOA2019-09-10T13:52:04Z


Files in this item

Thumbnail
Name:
LIU_EPSL_Manuscript_revised_final_SJ.pdf
Size:
14.23Mb
Format:
PDF
Description:
Accepted Manuscript
Embargo End Date:
2021-09-05

This item appears in the following Collection(s)

Show simple item record