Skip to Main content Skip to Navigation
Theses

Incertitudes des flux transportés par les rivières (Matière en suspension, nutriments, sels dissous) Vers un système expert d'optimisation des méthodes de calcul

Abstract : The originality of the thesis is to consider various materials (suspended particulate matter, total and dissolved nutrients, total dissolved solids) for basins which cover a wide range of hydrological variability (2000 stations-years of daily concentrations and discharge in France, Europe and United- States for size of 600 km² to 1 000 000 km²) and for 9 innovative or commonly used flux calculation methods. For each calculation method, the comparison of annual fluxes estimated from discrete surveys with reference fluxes enables to assess uncertainties in terms of bias and imprecision. These uncertainties have been studied in relation to hydrological, hydrochemical and sedimentological variability, The results of the thesis are twofold: (1) fundamental, linking uncertainties with two control factors - W2% et b50sup- which characterize the discharge and concentration variability, (2) applied, with the optimization of surveys function of sampling interval, duration of flux calculation and determination of uncertainties on the populations of fluxes already published.
Complete list of metadata

https://tel.archives-ouvertes.fr/tel-00714017
Contributor : Nathalie Pothier <>
Submitted on : Tuesday, July 3, 2012 - 11:29:18 AM
Last modification on : Thursday, September 26, 2019 - 1:26:00 AM
Long-term archiving on: : Thursday, October 4, 2012 - 2:51:17 AM

Identifiers

  • HAL Id : tel-00714017, version 1

Collections

Citation

Sébastien Raymond. Incertitudes des flux transportés par les rivières (Matière en suspension, nutriments, sels dissous) Vers un système expert d'optimisation des méthodes de calcul. Interfaces continentales, environnement. Université François Rabelais - Tours, 2011. Français. ⟨tel-00714017⟩

Share

Metrics

Record views

479

Files downloads

1280