RhEIA: Rheology of Earth's Interior Across scales
October 20 & 21, 2022 – Paris & Online
A two-day, multi-disciplinary workshop on solid Earth rheology, from seconds to millions of years, from minerals to tectonic plates.
Earth’s mechanical response to stress, quantified by variables such as elastic moduli, attenuation, and viscosity, varies drastically across temporal scales in a manner that is rooted in microphysical deformation processes.
Advancing our understanding of Earth’s rheology requires an interdisciplinary and multi-scale approach, limited by the lack of a common 'language’ across fields such as seismology, experimental rock physics, geodesy, geology, and geodynamics.
This Workshop will gather international scientists investigating Earth’s rheology using multiple approaches — observations, experiments, modelling— in Paris and online in October 2022.
The main goal of RhEIA is to lay common ground across disciplines and initiate discussions towards a multi-scale rheological profile of the Earth.
Meeting Venue
Ecole Normale Supérieure de Paris,
Talks in Salle Dussane: 45 rue d'Ulm, Paris, France.
Posters in Main Lobby of 24 rue Lhomond.
With online component via Zoom
Links will be sent to all registered participants on October 18, 2022. If you have registered and have not received the meeting information, email us at rheia.workshop <at> gmail.com
Schedule (Paris time CEST / UTC+2)
Sessions and Talks:
Microphysical deformation mechanisms (Oct. 20th)
Lars Hansen (U. Minnesota): Transient viscosity due to dislocation creep of olivine and implications for the dynamics of the upper mantle
Takehiko Hiraga (ERI): Superplastic (diffusion creep) Earth hypothesis
Nicolas Brantut (UCL): The brittle-ductile transition in rocks: Old and new
Elvira Mulyukova (Northwestern U.): How Microscopic Crystalline Defects Control the Motion of Tectonic Plates
Deformation from seconds to thousands of years (Oct. 20th)
Einat Aharonov (U. Jerusalem): Understanding failure of (wet and dry) granular fault zones: hysteresis, rate-dependence and earthquakes
Harriet Lau (U.C. Berkeley): Towards reconciling micro-to-macroscale observations of dissipation
Jean-Mathieu Nocquet (Geoazur): Hidden slow slip events during the afterslip following megathrust earthquakes
Pippa Whitehouse (Durham U.): Glacial Isostatic Adjustment: a climate-driven experiment to investigate Earth rheology
Mineralogical phase transformations & deformation (Oct. 21st)
Jessica Warren (U. Delaware): Fluid-driven phase transformations in shear zones and their influence on lithospheric strength
Jean-Philippe Perillat (U. Claude Bernard Lyon): Olivine high-pressure transitions, thickness of seismic discontinuities and attenuation
Julien Gasc (ENS Paris): Strain Localization and Possible Earthquake Generation Upon Phase Transformations Along the Subducting Slab, an Experimentalist’s Perspective
Stefan Schmalholz (UNIL): Shear-driven formation of olivine veins by dehydration of ductile serpentinite: a numerical study with implications for transient weakening
Short-term to geological deformation (Oct. 21st)
Luce Fleitout (ENS Paris): On the asthenosphere
Anne Davaille (U. Paris-Saclay): Convection in a soft mantle
Laetitia Le Pourhiet (Sorbonne U.): Possible impact of long-term deformation on the short-term record
Rishav Mallick (Caltech): Understanding lithosphere deformation by bridging timescales from the earthquake cycle to geologic structure at fold-thrust belts
Organizing committee: Kristel Chanard (IPGP/IGN) & Jean-Arthur Olive (ENS/CNRS)
Scientific committee: Anne Davaille (U. Paris-Saclay), Roland Burgmann (U.C. Berkeley), Marie-Pierre Doin (IsTerre) & the late Peter Molnar (C.U. Boulder).
Funding provided by CNRS/INSU/TelluS.
