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 properties which correlate with important deformation structures and geological terranes at the surface. Linear algebra Telecommuting Grid computing. In International Parallel and Distributed….

The aim of our study is to assess, using a thermo-petrological-seismological approach, the differences of otmographie 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. We show evidence that the flat slab dehydrates within the mantle wedge, but also along the subducting ridge prior to re-subducting. From This Paper Figures, tables, and topics from this paper.

Bandwidthcentric allocation of independent tasks on heterogeneous platforms. 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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Calcul de rais en tomographie sismique. Exploitation sur la grille

Ray tracing graphics Parallel computing Computation. O pen R epository and Bi bliography. The alluvial plain which extends from either side of this river banks is expected to have the potential for constituting an alternative ssismique supply for agricultural needs.

However, the characterisation of the alluvial plain is still superficial though the plain extension sismiqud the nature of the deposits are roughly known. We show significant seismic differences between the flat and normal subduction zones.

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tomographie sismique et électrique

This geometry is due to the faults and the magmatic intrusions. 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.

Citations Publications citing this paper. The alluvial plain would be relatively thicker downstream of the study area approximately 30 to 50m. Scientific congresses and symposiums: We show the most complete regional 3-D seismic tomography images of this region, whereby, in comparison to tomograpbie 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.

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.

Thursday, March 13, – 5: Zones de subduction horizontale versus normale: FosterNicholas T. Flat versus normal subduction zones: References Publications referenced by this paper.

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We present a parallel application for seismi c ray-tracing and its exploitation on an experimental computational grid built over the Renater n twork. SquyresAndrew LumsdaineWilliam L. 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.

By clicking accept or continuing to use the site, you agree to the terms outlined in our Privacy PolicyTerms of Serviceand Dataset License. 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.

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

Tuesday, December 11, – 1: Ray tomogralhie graphics Search for additional papers on this topic. Skip to search form Skip to main content. Calcul de rais en tomographie sismique.

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