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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Calcul de rais en tomographie sismique.

In International Parallel and Distributed…. We present a parallel application for seismi c ray-tracing and its exploitation on sismiqu experimental computational grid built over the Renater n twork. Bandwidthcentric allocation of independent tasks on heterogeneous platforms. GeorgeJohn G. Topics Discussed in 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. However, the characterisation of the alluvial plain is still superficial though the plain extension and the nature of the deposits are roughly known.

Scientific congresses and symposiums: FosterNicholas T. 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. Skip to search form Sismiaue to main content. We confirm previous studies that have shown that the thick lower crust of the sismiaue 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.

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SquyresAndrew LumsdaineWilliam L. The aim of our otmographie is to assess, using a thermo-petrological-seismological approach, the differences of the overriding lithosphere between these two 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. Marianne Marot 1 Details. Flat versus normal subduction zones: In upstream of the alluvial plain, near the oa, these methods were used to map the sandy to sandy-thin deposits m and the unfractured bedrock.

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

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

Ray tracing graphics Search for additional papers on this topic. Zones de subduction horizontale versus normale: Downstream they highlight fractured and deconsolidated bedrock drawing a V-shaped geometry of deposits.

tomographie sismique et électrique

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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. O pen R epository and Bi bliography. References Publications referenced by this paper. Citations Publications citing this paper.

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Ray tracing graphics Parallel computing Computation. This geometry is due to the faults and the magmatic intrusions.

Calcul de rais en tomographie sismique. Exploitation sur la grille

All documents in ORBi are protected by a user license. The alluvial plain would be relatively thicker downstream of the study area approximately 30 to 50m.

Thursday, March 13, – 5: Linear algebra Telecommuting Grid computing. Marianne Marot 1 AuthorId: HagedornJudith Ellen Devaney 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. The continental crust above the flat slab has very heterogeneous seismic properties which correlate with important deformation structures and geological terranes at the surface.

We show significant seismic differences between the flat and normal subduction zones. Hagedornand Judith E. Thursday, December 12, – 1: Showing of 10 references. Tuesday, December 11, – 1: From This Paper Figures, tables, and topics from this paper.

Have you forgotten your oa We show evidence that the flat slab dehydrates within the mantle wedge, but also along the subducting ridge prior to re-subducting. 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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