Tètchodiwèï Julie-Billard Yonouwinhi

Affiliated projects : Laboratoire d'Hydrologie Appliquée (LHA), Institut National de l'Eau (INE), Centre d'Excellence Africain pour l'Eau et l'Assainissement (C2EA), Université d'Abomey-Calavi (UAC), Cotonou, Benin

Affiliated CEA: West African Center for Water, Irrigation and Sustainable Agriculture (WACWISA), University of Development Studies (UDS), Tamale, Ghana
Supervisor: Gérard. Alfred. Franck. A. d'ALMEIDA
Geology, Mining and Environment Laboratory LGME, Faculty of Science and Technology FAST, University of Abomey-Calavi UAC, Cotonou, Benin

Co-supervisor: Kofi Félix ABAGALE
West African Center for Water, Irrigation and Sustainable Agriculture WACWISA, University of Development Studies UDSTamale, Ghana.
fabagale@uds.edu.gh

Co-supervision: Kofi Félix ABAGALE
West African Center for Water, Irrigation and Sustainable Agriculture WACWISA, University of Development Studies UDS, Tamale, Ghana
fabagale@uds.edu.gh

Other contributors to doctoral supervision:
Prof. Christophe KAKI / FAST UAC

Start date: 01/02/2021
Anticipated date of thesis defense: Before the end of 2024

• LinkedIn

Project title: Diagnosis of solid transport in Lake Nokoué and its channels: implementation of a quantitative model for assessing deposits.

Summary of scientific project: The aim of this study is to diagnose solid transport in Lake Nokoué and assess the volume of sediment transferred to the lake for sustainable management of this ecosystem. The study methodology is divided into three parts. These are data collection, processing and analysis, and finally modeling using specific software (TELEMAC 2D/GAIA). The latter is dedicated to the modeling of hydro-sedimentary processes and the quantitative assessment of sediments transferred into Lake Nokoué. The results of these various studies will enable us to: (1) determine the physico-chemical parameters of the lake waters; (2) specify current variations and water flows; (3) determine the basin morphology; (4) present the granulometry of the lake sediments and its channels; (5) specify the geochemical characteristics of the sediments; (6) understand the spatio-temporal variation of sedimentation processes in the lake; (7) quantify the volume of sediments transferred into the lake during defined periods.

Summary of results:

The hydromorphological analysis of the study area has been completed, as has the sedimentological and geochemical characterization of the sediments in Lake Nokoué and its channels. Hydrosedimentary dynamics and modelling are currently beingprocessed.