Master Thesis Defense: “Flood susceptibility mapping using remote sensing and geospatial data in West Africa “

Master Thesis Defense: “Flood susceptibility mapping using remote sensing and geospatial data in West Africa “

April 10, 2024

On Tuesday, April 30, at 12:00 Wilmer Fabián Montién Tique will present his master thesis on ” Flood susceptibility mapping using remote sensing and geospatial data in West Africa ” in seminar room 3, John-Skilton-Str. 4a.
Abstract: Floods in West Africa represent a challenging risk scenario that requires comprehensive action from stakeholders and the local community. To this end, precise and up-to-date data, alongside periodic hazard, susceptibility, and risk mapping, are crucial to understand flood disasters for decision-making. Hence, this master thesis aims to obtain flood susceptibility maps in West Africa, specifically Nigeria, through open data, remote sensing, GIS, machine learning, and statistical approaches. First, four Digital Elevation Models from different sources and four hydrological methods (D8, D-inf, Fd8, and Rho8) were combined and compared, and used to get the most applied topographic and hydrographic flood-influencing factors. At the same time, other factors derived from land cover, groundwater, soil, lakes, and coastline datasets were included. Secondly, preprocessing and feature selection were applied to the flood-influencing factors. Then, three different models were implemented to compare their performance. The selected models were Random Forest, Binary Logistic Regression, and Linear Discriminant Analysis; in this way, R and WhiteboxTools were used for the data preparation and modeling. Therefore, the produced flood susceptibility maps with the highest accuracy were evaluated with reference data (flood events between September and October 2022) provided by the DLR and Global Flood Monitoring. Lastly, the exposed population in 2020 was quantified along with the projected population in 2025 and 2030 displaying the most affected states in Nigeria.
1st Supervisor: Dr. Marta Sapena-Moll (DLR) 2nd Supervisor: Prof. Dr. Hannes Taubenböck, Universität Würzburg

you may also like:

New staff member Luisa Pflumm

New staff member Luisa Pflumm

Luisa Pflumm joined the Earth Observation Research Cluster in May 2024 as part of the EcoGlob project and is working with the UAS team in the context of remote sensing for biodiversity and nature conservation. She received her Bachelor's degree in Geography from the...

New team member: Ása Dögg Adalsteinsdottir

New team member: Ása Dögg Adalsteinsdottir

Ása Dögg Adalsteinsdottir joined the Earth Observation Research Cluster in May 2024 as a member of the EO4CAM project team. After earning a bachelor's degree in geography from the University of Iceland, she moved to Germany to study in our EAGLE master's program. She...

NEW TEAM MEMBER: CHRISTIAN SCHÄFER

NEW TEAM MEMBER: CHRISTIAN SCHÄFER

Christian Schäfer joined the EO4CAM project in May 2024. He received his Master's degree in 2017 from Julius-Maximilians-Universität Würzburg (JMU), focusing on GIS-based synthesis of transboundary soil maps. During his work in the JMU BigData@Geo project, he enhanced...

GGW talk on geodata, mobility and social media

GGW talk on geodata, mobility and social media

On Monday the 13th of May our PhD students Ariane Droin and Johannes Mast were holding a talk at the Geographische Gesellschaft Würzburg organised by the Fachschaft Geographie about 'Geodaten, Mobilität und soziale Medien. Big data und die lokale Perspektive der...