Explore the words cloud of the TRANSCALE project. It provides you a very rough idea of what is the project "TRANSCALE" about.
The following table provides information about the project.
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
|Coordinator Country||France [FR]|
|Total cost||1˙498˙750 €|
|EC max contribution||1˙498˙750 € (100%)|
1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
|Duration (year-month-day)||from 2017-04-01 to 2022-03-31|
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|1||CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS||FR (PARIS)||coordinator||1˙498˙750.00|
For more than 30 years, seismologists have used seismic waves to produce 3D images of the structure of the Earth. Despite many successes, a number of key questions still remain, which are of the uttermost importance to understand plate tectonics. What is the nature of the Lithosphere-Asthenosphere Boundary? What is the structure and history of the continental lithosphere?
The problem is that different seismic observables sample the Earth at different scales; they have different sensitivity to structure, and are usually interpreted separately. Images obtained from short period converted and reflected body waves see sharp discontinuities, and are interpreted in terms of thermo-chemical stratification, whereas seismic models constructed from long period seismograms depict a smooth and anisotropic upper mantle, and are usually interpreted in terms of mantle flow. However, sharp discontinuities may also produce effective anisotropy at large scales, and only a joint interpretation of different frequency bands can allow to fully localizing the patterns of deformation in the mantle.
The proposed work consists in developing and applying an entirely new approach to geophysical data interpretation, where different data types sampling the Earth at different scales are jointly embraced into a single Bayesian procedure. This proposal focuses on theoretical, algorithmic and computational advances needed for a new generation of tomographic models. We will use the large amount of data available in North-America (surface wave measurements, scattered body waves, SKS splitting measurements) to produce a multiscale model under North-America, depicting both discontinuities and anisotropy. This will allow us to answer some crucial questions about the structure and evolution of Earth. We will also produce a first fully Bayesian global Earth model by jointly inverting normal modes, surface and body wave observations.
|year||authors and title||journal||last update|
C Alder, T Bodin, Y Ricard, Y Capdeville, E Debayle, J P Montagner
Quantifying seismic anisotropy induced by small-scale chemical heterogeneities
published pages: 1585-1600, ISSN: 0956-540X, DOI: 10.1093/gji/ggx389
|Geophysical Journal International 211/3||2019-02-27|
Philip W Livermore, Alexandre Fournier, Yves Gallet, Thomas Bodin
Transdimensional inference of archeomagnetic intensity change
published pages: 2008-2034, ISSN: 0956-540X, DOI: 10.1093/gji/ggy383
|Geophysical Journal International 215/3||2019-02-27|
Rhys Hawkins, Thomas Bodin, Malcolm Sambridge, GaÃ«l Choblet, Laurent Husson
Trans-Dimensional Surface Reconstruction With Different Classes of Parameterization
published pages: , ISSN: 1525-2027, DOI: 10.1029/2018gc008022
|Geochemistry, Geophysics, Geosystems||2019-02-27|
Nicola Piana Agostinetti, Thomas Bodin
Flexible Coupling in Joint Inversions: A Bayesian Structure Decoupling Algorithm
published pages: 8798-8826, ISSN: 2169-9313, DOI: 10.1029/2018jb016079
|Journal of Geophysical Research: Solid Earth 123/10||2019-02-27|
N Hedjazian, T Bodin, L MÃ©tivier
An optimal transport approach to linearized inversion of receiver functions
published pages: , ISSN: 0956-540X, DOI: 10.1093/gji/ggy419
|Geophysical Journal International||2019-02-27|
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