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Accueil du site → Doctorat → Tunisie → Thèse soutenue → 2007 → Modélisation pluie-débit à base géomorphologique en milieu semi-aride rural tunisien : association d’approches directe et inverse

INAT Tunis (2007)

Modélisation pluie-débit à base géomorphologique en milieu semi-aride rural tunisien : association d’approches directe et inverse

BOUDHRAA Houda

Titre : Modélisation pluie-débit à base géomorphologique en milieu semi-aride rural tunisien : association d’approches directe et inverse.

Auteur : BOUDHRAA Houda

Université de soutenance : INAT Tunis

Grade : Doctorat en Sciences Agronomiques 2007

Présentation
Runoff quantification in semi-arid context is an important stake for Tunisia. We are interested in the case of the Merguellil wadi basin, situated in central Tunisia and draining about 1200 km² of the Kairouan plane, with the important dam of El Haouareb in the basin outlet. The Merguellil basin has been followed for many years and hydro-meteorological data have been collected, in the goal to study and analyze hydrological problems of the region. Although all efforts made, measure gaps and observation errors constitute a real problem for studying this basin, especially when it is about surface runoff. Rainfall-runoff geomorphologically-based transfer function is emphasized on structural elements which are observable for any considered outlet, and on a transfer conceptualization which is declinable within available data and knowledge. We propose an approach based on : (a) a geomorphologic transfer function, with the unit hydrograph concept ; (b) the inversion of this transfer function on the basis of the inverse theory and (c) the estimation of the net rainfall, coupling variable between hillslope and network, by deconvolution of the observed discharge at the outlet.

Mots Clés  : SIMULATION PRECIPITATION GEOMORPHOLOGIE ZONE SEMI-ARIDE BASSIN VERSANT SKHIRA MERGUELLIL

Présentation (DISCCRS)

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Page publiée le 17 octobre 2012, mise à jour le 27 novembre 2019