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.

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 tomographke catalogs, 2 a much denser seismic station network which enables us to resolve better the subduction zone.

Calcul de rais en tomographie sismique. Exploitation sur la grille

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

As expected, the flat slab region is impacted by colder temperatures, and therefore by faster seismic velocities and more intense seismic activity, compared to tomogaphie normal slab region. GeorgeJohn G. Downstream they highlight fractured and deconsolidated bedrock drawing a V-shaped geometry of deposits.

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

Scientific congresses and tomographke 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 sismlque of the continental lithosphere above the flat slab, and the links between sismmique deformations at the surface and at depth.

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

Marianne Marot 1 AuthorId: The alluvial plain would be relatively thicker downstream of the study area approximately 30 to 50m. In upstream of the alluvial plain, near the river, these methods were oa to map the sandy to sandy-thin deposits m and the unfractured bedrock.

References Publications referenced by this paper. This geometry is due to the faults and the magmatic intrusions. Citations Publications citing this paper.

Calcul de rais en tomographie sismique. All documents in ORBi are protected by a user license.

Zones de subduction horizontale versus normale: Have you forgotten your login? Ray tracing graphics Search for additional papers on this topic. Showing of 10 references.

We show significant seismic differences between the flat and normal subduction zones. The analysis of huge amounts of data leads to improvements in the precisio n of models but requires massive computations. Marianne Marot 1 Details.

However, the characterisation of the alluvial plain is still superficial though the plain extension and the nature of the deposits are roughly known. Bandwidthcentric allocation of independent tasks on heterogeneous platforms.

The continental crust above the flat slab has very heterogeneous seismic properties which correlate with important deformation structures and geological terranes at the surface. Topics Discussed in This Paper. FosterNicholas T. We present a parallel application for seismi c ray-tracing and its exploitation on an experimental computational grid built over the Renater n twork.

tomographie sismique et électrique

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. In International Parallel and Distributed….

Thursday, December 12, - 1: Flat versus normal subduction zones: Tuesday, December 11, - 1: 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. tomogrqphie

From This Paper Figures, tables, and topics from this paper.