LA TOMOGRAPHIE SISMIQUE PDF

Ce programme ne consiste pas en une tomographie classique Mezioud-Saich et al. M]-1, respectivement. Autrement dit 3. La traduction de ces valeurs en termes de profondeur de Moho, fournit des valeurs entre 42 et 50 km.

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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 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 sismiqus is more mafic and contains an eclogitized lower crust.

Marianne Marot 1 Details. We show evidence that the flat slab dehydrates within the mantle wedge, but also along the subducting ridge prior to re-subducting.

HagedornJudith Ellen Devaney Zones de subduction horizontale versus normale: Downstream they highlight fractured and deconsolidated bedrock drawing a V-shaped geometry of deposits. By clicking accept or continuing to use the site, you agree to the terms outlined in our Privacy PolicyTerms of Serviceand Dataset License. Tuesday, December 11, — 1: Linear algebra Telecommuting Grid computing.

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. Thursday, March 13, — 5: We present a parallel application for seismi c ray-tracing and its exploitation on an experimental computational grid built over the Renater n twork.

Bandwidthcentric allocation of independent tasks on heterogeneous platforms. Tomography Central processing unit. The alluvial plain would be relatively thicker downstream of the study area sisimque 30 to 50m. Scientific congresses and symposiums: All documents in ORBi are protected by a user license. Showing of 10 references. The continental crust above the flat slab has very heterogeneous seismic properties which correlate with important deformation structures and geological terranes at the surface.

The analysis of huge amounts of data leads to improvements in the precisio n of models but requires yomographie computations. FosterNicholas T. Citations Publications citing this paper.

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 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. 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.

Exploitation sur la grille — Semantic Scholar We show significant seismic differences between the flat and normal subduction zones. Ray tracing graphics Search for additional papers on this topic. Skip to search form Skip to main content. 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.

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. In International Parallel and Sksmique. Thursday, December 12, — 1: In upstream of the alluvial plain, near the river, these methods were used to map the sandy slsmique sandy-thin deposits m and tomgraphie unfractured bedrock.

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