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Numerical modelling of rheological controls for nucleation, evolution and seismicity of tectonic plate boundaries

English title Numerical modelling of rheological controls for nucleation, evolution and seismicity of tectonic plate boundaries
Applicant Gerya Taras
Number 182069
Funding scheme Project funding
Research institution Institut für Geophysik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Geophysics
Start/End 01.02.2019 - 30.09.2020
Approved amount 244'183.00
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Keywords (7)

rheology of rocks; grain size evolution; plate boundaries; rate- and state-dependent friction; geodynamic models; seismic cycle; fluid-solid coupling

Lay Summary (German)

Lead
Dieses Projekt finanziert eine einjährige Verlängerung der Forschungsarbeit von vier Doktorats-Studenten am Institut für Geophysik der ETH Zürich mit dem Thema der Entstehung, Ausbildung und Weiterentwicklung, sowie der Seismizität von tektonischen Plattengrenzen.Die Verlängerung ermöglicht den Studenten ihr wissenschaftlichen Arbeit zu beenden und zu publizieren, sowie ihre Doktorarbeiten anzufertigen.
Lay summary
Die folgenden wissenschaftlichen Hauptschwerpunkte werden durch die zusätzliche Förderungsperiode erzielt:
1) Untersuchung des Einflusses von viskoser Anisotropie und Korngrössen Verkleinerung auf globale Mantelkonvektion mit Plattentektonik und spontaner, selbstgesteuerter  Plattengrenzen Entstehung.
2)  Die Erforschung des Einflusses von rate- and state-dependent friction (geschwindigkeits- und zustands-abhängiger Reibungskoeffizient) auf die Genese, Ausweitung, Geometrie und Seismizität von Transformstörungen.
3) Das Untersuchen der rheologischen Kopplung von Festkörpern mit Fluiden vor dem Hintergrund von Erdbebenzyklen in Subduktionszonen.
4)  Die Erforschung des Einflusses einer rheologischen Schwächung auf spontane, selbstgesteuerte, sich zurückziehende Subduktions/Kollisions Systeme mit STEP Störungen.
Die folgenden Ergebnisse werden von dem vorgeschlagenen multidisziplinären Projekt erwartet: (i) Die physikalischen Rahmenbedingungen der Entstehung, Weiterentwicklung und Seismizität verschiedener Plattengrenzen-Typen und (ii) deren potentieller Zusammenhang mit spontaner Deformations-Lokalisierung in globalen und regionalen Mantel Konvektionsprozessen werden quantifiziert und verstanden werden durch Zuhilfenahme von (iii) neuen 2D und 3D (seismo)-thermo-mechanischen Modellierungsverfahren, welceh in diesem Projekt entwickelt wurden.
Die Fertigstellung dieses ambitionierten aber realistischen Wissenschaftsprogramms zu Plattengrenzen wird den vier Doktoranden ermöglichen ihre Arbeiten erfolgreich zu beenden und ihre Doktorarbeiten zu verteidigen.
 
Direct link to Lay Summary Last update: 06.02.2019

Responsible applicant and co-applicants

Employees

Publications

Publication
Oceanic crust recycling controlled by weakening at slab edges
Munch Jessica, Gerya Taras, Ueda Kosuke (2020), Oceanic crust recycling controlled by weakening at slab edges, in Nature Communications, 11(1), 2009-2009.
Ongoing formation of felsic lower crustal channel by relamination in Zagros collision zone revealed from regional tomography
Talebi Amir, Koulakov Ivan, Moradi Ali, Rahimi Habib, Gerya Taras (2020), Ongoing formation of felsic lower crustal channel by relamination in Zagros collision zone revealed from regional tomography, in Scientific Reports, 10(1), 8224-8224.
Transient stripping of subducting slabs controls periodic forearc uplift
Menant Armel, Angiboust Samuel, Gerya Taras, Lacassin Robin, Simoes Martine, Grandin Raphael (2020), Transient stripping of subducting slabs controls periodic forearc uplift, in Nature Communications, 11(1), 1823-1823.
Building cratonic keels in Precambrian plate tectonics
Perchuk A. L., Gerya T. V., Zakharov V. S., Griffin W. L. (2020), Building cratonic keels in Precambrian plate tectonics, in Nature, 586(7829), 395-401.
Can Grain Size Reduction Initiate Transform Faults?—Insights From a 3‐D Numerical Study
Schierjott Jana C., Thielmann Marcel, Rozel Antoine B., Golabek Gregor J., Gerya Taras V. (2020), Can Grain Size Reduction Initiate Transform Faults?—Insights From a 3‐D Numerical Study, in Tectonics, 39(10), e2019TC005.
Seismo-hydro-mechanical modelling of the seismic cycle: Methodology and implications for subduction zone seismicity
Petrini Claudio, Gerya Taras, Yarushina Viktoriya, van Dinther Ylona, Connolly James, Madonna Claudio (2020), Seismo-hydro-mechanical modelling of the seismic cycle: Methodology and implications for subduction zone seismicity, in Tectonophysics, 791, 228504-228504.
Corona structures driven by plume–lithosphere interactions and evidence for ongoing plume activity on Venus
Gülcher Anna J. P., Gerya Taras V., Montési Laurent G. J., Munch Jessica (2020), Corona structures driven by plume–lithosphere interactions and evidence for ongoing plume activity on Venus, in Nature Geoscience, 13(8), 547-554.
Subduction Initiation by Plume‐Plateau Interaction: Insights From Numerical Models
Baes Marzieh, Sobolev Stephan V., Gerya Taras, Brune Sascha (2020), Subduction Initiation by Plume‐Plateau Interaction: Insights From Numerical Models, in Geochemistry, Geophysics, Geosystems, 21(8), e2020GC009.
Characteristics of earthquake ruptures and dynamic off-fault deformation on propagating faults
Preuss Simon, Ampuero Jean Paul, Gerya Taras, van Dinther Ylona (2020), Characteristics of earthquake ruptures and dynamic off-fault deformation on propagating faults, in Solid Earth, 11(4), 1333-1360.
On the self-regulating effect of grain size evolution in mantle convection models: application to thermochemical piles
Schierjott Jana, Rozel Antoine, Tackley Paul (2020), On the self-regulating effect of grain size evolution in mantle convection models: application to thermochemical piles, in Solid Earth, 11(3), 959-982.
Peel-back controlled lithospheric convergence explains the secular transitions in Archean metamorphism and magmatism
Chowdhury Priyadarshi, Chakraborty Sumit, Gerya Taras V., Cawood Peter A., Capitanio Fabio A. (2020), Peel-back controlled lithospheric convergence explains the secular transitions in Archean metamorphism and magmatism, in Earth and Planetary Science Letters, 538, 116224-116224.
The evolution and distribution of recycled oceanic crust in the Earth's mantle: Insight from geodynamic models
Yan Jun, Ballmer Maxim D., Tackley Paul J. (2020), The evolution and distribution of recycled oceanic crust in the Earth's mantle: Insight from geodynamic models, in Earth and Planetary Science Letters, 537, 116171-116171.
Lateral propagation–induced subduction initiation at passive continental margins controlled by preexisting lithospheric weakness
Zhou Xin, Li Zhong-Hai, Gerya Taras V., Stern Robert J. (2020), Lateral propagation–induced subduction initiation at passive continental margins controlled by preexisting lithospheric weakness, in Science Advances, 6(10), eaaz1048-eaaz1048.
Plume‐Induced Subduction Initiation: Single‐Slab or Multi‐Slab Subduction?
Baes Marzieh, Sobolev Stephan, Gerya Taras, Brune Sascha (2020), Plume‐Induced Subduction Initiation: Single‐Slab or Multi‐Slab Subduction?, in Geochemistry, Geophysics, Geosystems, 21(2), e2019GC008.
Stress-driven fluid flow controls long-term megathrust strength and deep accretionary dynamics
Menant Armel, Angiboust Samuel, Gerya Taras (2019), Stress-driven fluid flow controls long-term megathrust strength and deep accretionary dynamics, in Scientific Reports, 9(1), 9714-9714.
A Secondary Zone of Uplift Due to Megathrust Earthquakes
van Dinther Ylona, Preiswerk Lukas E., Gerya Taras V. (2019), A Secondary Zone of Uplift Due to Megathrust Earthquakes, in Pure and Applied Geophysics, 176(9), 4043-4068.
Seismic and Aseismic Fault Growth Lead to Different Fault Orientations
Preuss Simon, Herrendörfer Robert, Gerya Taras, Ampuero Jean‐Paul, Dinther Ylona (2019), Seismic and Aseismic Fault Growth Lead to Different Fault Orientations, in Journal of Geophysical Research: Solid Earth, 124(8), 8867-8889.
Hotter mantle but colder subduction in the Precambrian: What are the implications?
Perchuk A.L., Zakharov V.S., Gerya T.V., Brown M. (2019), Hotter mantle but colder subduction in the Precambrian: What are the implications?, in Precambrian Research, 330, 20-34.
Introduction to Numerical Geodynamic Modelling
Gerya Taras (2019), Introduction to Numerical Geodynamic Modelling, Cambridge University Press, Cambridge.

Collaboration

Group / person Country
Types of collaboration
Prof. Y. van Dinther, Utrecht University Netherlands (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. P. Chowdhury, Prof. P. Cawood, Monash University Australia (Oceania)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. W. Griffin, Macquarie University Australia (Oceania)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. I Koulakov, Russian Academy of Sciences Russia (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. A Perchuk, Prof. V. Zakharov, Moscow State University Russia (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. V. Yarushina, Institute for Energy Technology Norway (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Bercovici, Yale University United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Exchange of personnel
Dr. A. Menant, Dr. S. Angiboust, CNRS, Institut de physique du globe de Paris France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. Baes, Prof. S. Sobolev, GFZ Potsdam Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. L. Montesi, University of Maryland United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. J.-P. Ampuero, Université Côte d'Azur France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Communication with the public

Communication Title Media Place Year
Media relations: print media, online media 37 recently active volcanoes identified on Venus BBC International 2020
Media relations: print media, online media The Venus ‘ring of fire’ ETH News International 2020
Media relations: print media, online media Venus has crown-shaped hotspots that form its own 'Ring of Fire' CNN International 2020

Awards

Title Year
Golden Owl Price (second time) from ETH-students for the excellence in teaching 2020
Elected as American Geophysical Union Fellow (AGU Fellow) 2019

Associated projects

Number Title Start Funding scheme
169880 Spatio-temporal variability of subduction zone seismicity from 2D and 3D seismo-thermo-mechanical models 01.04.2017 Project funding

Abstract

In 2015, ETH Zürich participated as a partner in the EU H2020 project CREEP (Complex rheologies in Earth dynamics and industrial processes). This participation was funded by the State Secretariat for Education, Research and Innovation (SERI), and supported PhD candidates Jana Schierjott and Simon Preuss for a maximum of three years. Their research was aimed at numerical modelling of rheological controls for nucleation, evolution and seismicity of tectonic plate boundaries during global and regional plate tectonics processes. In 2016, two more PhD candidates (Claudio Petrini and Jessica Munch) joined this important research effort, who were funded for a maximum of three years by ETH-project ETH-0715-2 (Fluid controls on subduction thrust seismicity: seismo-hydro-thermo-mechanical modelling with experimental validation) and EU project SUBITOP (Understanding subduction zone topography through modelling of coupled shallow and deep processes), respectively. As the result of this co-funded multi-disciplinary effort, several types of tectonic plate boundaries were addressed by 2D and 3D (seismo)-thermo-mechanical modelling as well as their potential relationship to spontaneous strain localisation in global and regional mantle convection processes. Several important methodological and scientific results came from close interaction of these four PhD students, which include:1)Understanding influence of grain size reduction on global mantle convection with plate tectonics and nucleation of ridge-transform spreading patterns (Schierjott).2)Reproducing nucleation and aseismic/seismic growth, bending and branching of transform faults using continuum-based rate- and state-dependent friction formulation (Preuss).3)Development of fully coupled seismo-hydro-thermo-mechanical (SHTM) numerical modelling approach for modelling of seismic processes induced by fluid flow in subduction zones (Petrini).4)Understanding rheological controls of spontaneous development of STEP (Subduction-Transform Edge Propagator) faults in retreating subduction systems (Munch).Novel numerical implementation works performed by each of the four students is nearly finished, but the time needed for the development, modification and validation of 2D and 3D codes involved in this research program was distinctly underestimated. This creates the need for one-year funding extension for this research team of four closely collaborating students, which will allow them to finalize their research and publications and prepare their PhD theses. Since none of the original funding schemes allows for a project extension, we propose to fund the continuation of the research program of these four PhD students within this new SNSF project. The following key scientific goals will be achieved during this additional funding period:1)Investigating the roles of viscous anisotropy and grain size reduction for the global mantle convection with plate tectonics and spontaneous plate boundaries nucleation (Schierjott).2)Investigating the roles of rate- and state-dependent friction for the emergence, growth, geometry and seismicity of transform plate boundaries (Preuss).3)Investigating the roles of rheological solid-fluid coupling for earthquake cycles in subduction zones (Petrini).4)Investigating the roles of rheological weakening for spontaneously retreating subduction/collision systems with STEP faults (Munch). Finalizing this ambitious but realistic research program on plate boundaries with SNSF funds will allow the four PhD students to successfully complete their works and defend their PhD theses.
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