LA TOMOGRAPHIE SISMIQUE PDF

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LA TOMOGRAPHIE SISMIQUE PDF

Seismic tomography enables to model the internal structure of the Earth. The analysis of huge amounts of data leads to improvements in the precisio n of models. 1 juil. Sismicité et géométrie de l’interplaque 3 Sismique marine grand-angle et tomographie. Acquisition: sismique. 3 janv. d’autres laboratoires européens, les méthodes de sismique active et tomographie sismique en ondes SH et par inversion des ondes de.

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The continental crust above the flat slab has very heterogeneous seismic tomogrsphie which correlate with important deformation structures and geological terranes at the surface. All documents in ORBi are protected by a user license. Downstream they highlight fractured and deconsolidated bedrock drawing a V-shaped geometry of deposits.

Showing of 10 references. Marianne Marot 1 AuthorId: As expected, the flat slab region is impacted by colder temperatures, and therefore by faster seismic velocities and more intense seismic activity, compared to the normal slab region.

Calcul de rais en tomographie sismique. Exploitation sur la grille

In this basin, the main surface water resource for agricultural needs is constituted by a small perennial river, but in recent years this resource is insufficient to satisfy the uses in agriculture. Bandwidthcentric allocation of independent tasks on heterogeneous platforms.

The aim of our study is to assess, using a thermo-petrological-seismological approach, the differences of the overriding lithosphere between these dismique regions, in order to better understand the deep structure of the continental lithosphere above the flat slab, and the links between the deformations at the surface and at depth.

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Ray tracing tomogrqphie Parallel computing Computation. From This Paper Figures, tables, and topics from this paper. We show evidence that the flat slab dehydrates within the mantle wedge, but also along the subducting ridge prior to re-subducting. However, the characterisation of the alluvial plain is still superficial though the plain extension and the nature of the deposits are roughly known.

The alluvial plain which extends from either side of this river banks is expected to have the potential for constituting an alternative water supply for agricultural needs. Hagedornand Judith E. Skip to search form Skip to main content.

Calcul de rais en tomographie sismique. Exploitation sur la grille – Semantic Scholar

Tuesday, December 11, – 1: We show significant seismic differences between the flat and normal subduction zones. We show the most complete regional 3-D seismic tomography images of this region, whereby, in comparison to previous studies, we use 1 a much larger seismic dataset compiled from several short-term seismic catalogs, 2 a much denser seismic station network which enables us to resolve better the subduction zone.

HagedornJudith Ellen Devaney In upstream of the alluvial plain, near the river, these methods were used to map the sandy to sandy-thin deposits m and the unfractured bedrock. From a hydrogeological point of view, downstream of the study area, the alluvial plain would constitute an important aquifer with a high porosity and thick deposits.

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tomographie sismique et électrique

Thursday, December 12, – 1: The alluvial plain would be relatively thicker downstream of the study area approximately 30 to 50m. Tomographue pen R epository and Bi bliography.

The analysis of huge amounts of data leads to improvements in the precisio n of models but requires massive computations.

SquyresAndrew LumsdaineWilliam L. We confirm previous studies that have shown that the thick lower crust of the present day Andean arc is non-eclogitized and maybe representing the felsic Chilenia terrane, whereas to the east, the Cuyania terrane in the backarc is more mafic and contains an eclogitized lower crust.

By clicking accept or continuing to use sismmique site, you agree to the terms outlined in our Privacy PolicyTerms of Serviceand Dataset License. GeorgeJohn G. Calcul de rais en tomographie sismique. Have you forgotten your login? Thursday, March 13, – 5: Ray tracing graphics Search for additional papers on this topic. Linear algebra Telecommuting Grid computing.

Marianne Marot 1 Details. This geometry is due to the tomogtaphie and the magmatic intrusions. FosterNicholas T. In International Parallel and Distributed…. Zones de subduction horizontale versus normale: