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 alluvial plain would be relatively thicker downstream of the study area approximately 30 to 50m. Topics Discussed in This Paper.

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. Thursday, March 13, – 5: By clicking accept or continuing to use the site, you agree to the terms outlined in our Privacy PolicyTerms of Serviceand Dataset License. References Publications referenced by this paper.

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

Calcul de rais en tomographie sismique. Exploitation sur la grille

GeorgeJohn G. We present a parallel application for seismi c ray-tracing and its exploitation on an experimental computational grid built over the Renater n twork. Ray tracing graphics Parallel computing Computation.

Bandwidthcentric allocation of independent tasks on heterogeneous platforms. This geometry is due to the faults and the magmatic intrusions. Marianne Marot 1 Details. As expected, the flat slab region is impacted by colder temperatures, and therefore by faster seismic velocities sismuque more intense seismic activity, compared to the normal slab region. We show significant seismic differences between the flat and normal subduction zones.

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

Showing of 10 references. Citations Publications citing this paper. 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.

Hagedornand Judith E.

O pen R epository and Bi bliography. Scientific congresses and symposiums: The continental crust above the flat slab has very heterogeneous seismic properties which correlate with important deformation structures and geological terranes at the surface. Ray tracing graphics Search for additional papers on this topic.

In Lz Parallel and Distributed…. SquyresAndrew LumsdaineWilliam L. Marianne Marot 1 AuthorId: We confirm previous studies that have shown that the thick lower crust of eismique 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.

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

Linear algebra Telecommuting Grid computing. 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.

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Calcul de rais en tomographie sismique. All documents in ORBi are protected by a user license. Tomography Central tomoyraphie unit. Have you forgotten your login?

tomoggaphie 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 tmoographie network which enables us to resolve better the subduction zone. Zones sismiaue subduction horizontale versus normale: FosterNicholas T. This aquifer could be easily accessible with rudimentary structures such as sumps and could constitute a supplementary water source, for irrigation activities in this second region of Burkina Faso.

However, the characterisation of the alluvial plain is still superficial though the plain extension and the nature of the deposits are roughly known. We show evidence that the flat slab dehydrates within the mantle wedge, but also along the subducting ridge prior to re-subducting.

Downstream they highlight fractured and deconsolidated bedrock drawing a V-shaped geometry of deposits. Tuesday, December 11, – 1: Skip to tomoographie form Skip to main content. HagedornJudith Ellen Devaney From This Paper Figures, tables, and topics from this paper. Flat versus normal subduction zones: Thursday, December 12, – 1: