Slab buckling as a driver for rapid oscillations in Indian plate motion and subduction rate

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10489470" target="_blank" >RIV/00216208:11320/24:10489470 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=RLjkex~lvv" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=RLjkex~lvv</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s43247-024-01472-x" target="_blank" >10.1038/s43247-024-01472-x</a>

Result language
angličtina
Original language name
Slab buckling as a driver for rapid oscillations in Indian plate motion and subduction rate
Original language description
Plate tectonics is primarily driven by the constant gravitational pull of slabs where oceanic lithosphere sinks into the mantle at subduction zones. Under stable plate boundary configurations, changes in plate motion are then thought to occur gradually. Surprisingly, recent high-resolution Indian plate reconstructions revealed rapid (2-3 Million-year) plate velocity oscillations of +/- 50 %. We show, through numerical experiments, that the buckling of slabs in the mantle transition zone causes such oscillations. This buckling results from the deceleration of slabs as they sink into the lower mantle. The amplitude and period of buckling-associated oscillations depend on average subduction velocity and the available space in the mantle transition zone. The oscillations also affect the upper plate which may explain enigmatic observations of episodic deformation and fluid flow in subduction-related orogens. We infer that the slab pull that drives plate tectonics is generated in just the top few hundred kilometers of the mantle. Slab buckling in the mantle transition zone can explain 2-3 million-year oscillations in the Indian plate velocity during rapid subduction, based on two-dimensional numerical models.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10500 - Earth and related environmental sciences

Project
<a href="/en/project/GA23-06345S" target="_blank" >GA23-06345S: Seismo-geodynamic modeling of the Hellenic subduction</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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