Gutenberg Open Science: Surface-wave tomography of the central-western Mediterranean : new insights into the Liguro-Provençal and Tyrrhenian basins

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-8766

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DC Field	Value	Language
dc.contributor.author	Magrini, Fabrizio	-
dc.contributor.author	Diaferia, Giovanni	-
dc.contributor.author	El-Sharkawy, Amr	-
dc.contributor.author	Cammarano, Fabio	-
dc.contributor.author	van der Meijde, Mark	-
dc.contributor.author	Meier, Thomas	-
dc.contributor.author	Boschi, Lapo	-
dc.date.accessioned	2023-02-07T07:59:54Z	-
dc.date.available	2023-02-07T07:59:54Z	-
dc.date.issued	2022	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/8782	-
dc.description.abstract	The complex tectonic setting of the central-western Mediterranean has interested geoscientists for decades, but its geodynamic evolution remains a matter of debate. We rely on 807 seismometers from southern Europe and northern Africa to measure Rayleigh and Love phase velocities in the period range ∼5–200 s, based on teleseismic earthquakes and seismic ambient noise. By nonlinear joint inversion of the phase-velocity maps, we obtain a 3-D shear-wave velocity (VS) model of the study area. At shallow depths, our model correlates with surface geology and reveals the presence of a sedimentary cover in the Liguro-Provençal basin, as opposed to the Tyrrhenian basin where this is either very thin or absent. At ∼5-km depth, high velocities below the Magnaghi, Vavilov, and Marsili seamounts point to an exhumed, scarcely serpentinized mantle. These are replaced by lower velocities at larger depths, likely connected to the presence of partial melt. At 50–60-km depth, a very heterogeneous structure characterizes the Tyrrhenian basin, with low velocities pointing to the presence of fluids due to the lateral mantle inflow from the Ionian slab edges, and higher velocities associated with a relatively dry upper mantle. Such heterogeneity disappears at depths ≳75 km, replaced by more uniform velocities which are ∼2% lower than those found in the Liguro-Provençal basin. We infer that, at the same depths, the Tyrrhenian basin is characterized by a larger concentration of fluids and possibly higher temperatures.	en_GB
dc.description.sponsorship	Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 491381577	de
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	550 Geowissenschaften	de_DE
dc.subject.ddc	550 Earth sciences	en_GB
dc.title	Surface-wave tomography of the central-western Mediterranean : new insights into the Liguro-Provençal and Tyrrhenian basins	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-8766	-
jgu.type.contenttype	Scientific article	de
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 09 Chemie, Pharmazie u. Geowissensch.	de
jgu.organisation.number	7950	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Journal of Geophysical Research: Solid Earth	de
jgu.journal.volume	127	de
jgu.journal.issue	3	de
jgu.pages.alternative	2021JB023267	de
jgu.publisher.year	2022	-
jgu.publisher.name	John Wiley & Sons, Ltd	de
jgu.publisher.place	Hoboken, NJ	de
jgu.publisher.issn	2169-9356	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	550	de
jgu.publisher.doi	10.1029/2021JB023267	de
jgu.organisation.ror	https://ror.org/023b0x485	-
jgu.subject.dfg	Naturwissenschaften	de
Appears in collections:	DFG-491381577-H

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