Quantification des échanges nappe-rivière au sein de l’hydrosystème Seine par modélisation multi-échelle

Abstract : Given the current climate and anthropogenic evolutions, water management becomes one of the greatest challenges of the 21st Century. For that purpose, by identifying hydraulic continuity between surface and subsurface water, the concept of integrated water management can be introduced. In this work this management concept is applied on the Seine basin by quantizing hydrological processes occuring at the nested stream-aquifer interface. The implementatin of the nested interface concept can bedone through multi-scale modeling. This modelling procedure, aimed at embody the local characteristics of the interfaces (such as structural or hydrodynamic heterogeneities) in large scale models. A multi-scale modelling procedures is applied to the regional Seine basin model (70000 km²) in order, to study the hydrodynamic behaviour of the Bassée alluvial plain, and to quantify the stream-aquifer exchanged fluxes at the basin scale. The modelling protocol is initiated with regionals fluxes estimation over Seine hydrosystem. Regional fluxes consistency are assured by a two-step calibration procedure of fully coupled models. Then, the local characteristics of the Bassée alluvial plain, are implemented in the regional model by nested modelling methodology associated with upscaling procedure of hydraulics properties. Finally, the multi-scale modelling procedure lead to quantify distributed stream-aquifer exchanged water fluxes over 83% of the natural river network of the Seine basin, and thus, achieve to answer the integrated water resources management recommandations of the water framework directive.
Document type :
Theses
Complete list of metadatas

https://pastel.archives-ouvertes.fr/tel-01790909
Contributor : Abes Star <>
Submitted on : Monday, May 14, 2018 - 10:37:10 AM
Last modification on : Wednesday, May 15, 2019 - 11:44:21 AM
Long-term archiving on : Tuesday, September 25, 2018 - 9:45:03 PM

File

2016PSLEM090_archivage.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01790909, version 1

Citation

Baptiste Labarthe. Quantification des échanges nappe-rivière au sein de l’hydrosystème Seine par modélisation multi-échelle. Hydrologie. PSL Research University, 2016. Français. ⟨NNT : 2016PSLEM090⟩. ⟨tel-01790909⟩

Share

Metrics

Record views

217

Files downloads

241