Multidimensional Geodynamic Modeling in the Southeast Carpathians: Upper Mantle Flow-Induced Surface Topography Anomalies

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dc.authoridUlugergerli, Emin Ugur/0000-0001-5639-1109
dc.authoridSengul Uluocak, Ebru/0000-0002-6701-463X
dc.authoridGogus, Oguz/0000-0002-6199-303X
dc.contributor.authorSengul-Uluocak, E.
dc.contributor.authorPysklywec, R. N.
dc.contributor.authorGogus, O. H.
dc.contributor.authorUlugergerli, E. U.
dc.date.accessioned2025-01-27T20:34:39Z
dc.date.available2025-01-27T20:34:39Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractSpectral variations of gravity and topography data show nonisostatic compensation of elevation in the Southeast Carpathians that is consistent with our new residual topography calculations. Multidimensional thermomechanical models are created to consider a possible mantle flow component of the surface topography with varying temperature models and crustal configurations. The temperature anomalies derived from large-scale P wave velocity anomalies and combined temperature model are estimated as input for the parametric numerical modeling experiments. Model results show that a surface uplift (up to similar to 1 km) develops in the southeastern Carpathians due to the rising hot upper mantle beneath the region. The upwelling flow is also in concordance with observations such as volcanism and enhanced surface heat flow in the region. Subsidence in the eastern part (0.5-1 km over the Vrancea zone and the Focsani Basin) forms in relation to the downgoing Vrancea slab. The findings indicate the significant role of upper mantle structures on the present-day anomalous topography related to proposed postcollisional tectonics in the Southeast Carpathians.
dc.description.sponsorshipTUBITAK; NSERC; National Science Foundation [EAR-0949446, EAR-1550901]
dc.description.sponsorshipThe authors thank the Editors Claudio Faccenna and Thorsten Becker, the reviewers Laurent Husson and Liviu Matenco, anonymous reviewers, and the Associate Editors for their constructive comments that greatly improved the manuscript. E.S.U. and O.H.G. thank TUBITAK for the support by the 2219-International Postdoctoral Research Fellowship Programme. R.P. acknowledges support from an NSERC Discovery Grant. We thank Ivan Koulakov for the P wave seismic tomography model derived from http://www.ivan-art.com/science/REGIONAL/index.html (Koulakov et al., 2009). Global crustal model used in the study is available from Crust1.0 (Laske et al., 2013; https://igppweb.ucsd.edu/similar to gabi/crust1.html).The freeair gravity and topography data are constructed using Earth Gravitational Model 2012 (Bonvalot et al., 2012; http://bgi.omp.obs-mip.fr/data-products/Grids-and-models/wgm2012).The temperature anomalies are derived from Ismail-Zadeh et al. (2005) for the Model-2 in the study. We thank the Computational Infrastructure for Geodynamics (geodynamics.org) which is funded by the National Science Foundation under awards EAR-0949446 and EAR-1550901 for supporting the development of ASPECT. E.S.U. acknowledges Lev Karatun for his assistance on ASPECT. Computations were performed on the GPC supercomputer at the Niagara HPC Consortium with support provided by the Department of Earth Sciences, University of Toronto (www.es.utoronto.ca) and Compute Canada (www.computecanada.ca).E.S.U.also thanks Sedat Gunduz for the IT support and benefited from discussions with Tasca Santimano, Bo Chen, and Payman Janbakhsh.
dc.identifier.doi10.1029/2019GC008277
dc.identifier.endpage3149
dc.identifier.issn1525-2027
dc.identifier.issue7
dc.identifier.scopus2-s2.0-85068515825
dc.identifier.scopusqualityQ1
dc.identifier.startpage3134
dc.identifier.urihttps://doi.org/10.1029/2019GC008277
dc.identifier.urihttps://hdl.handle.net/20.500.12428/23403
dc.identifier.volume20
dc.identifier.wosWOS:000480282600002
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer Geophysical Union
dc.relation.ispartofGeochemistry Geophysics Geosystems
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectSoutheast Carpathians
dc.subjectthree- and two-dimensional numerical modeling
dc.subjectgravity admittance
dc.subjectisostasy
dc.titleMultidimensional Geodynamic Modeling in the Southeast Carpathians: Upper Mantle Flow-Induced Surface Topography Anomalies
dc.typeArticle

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