Articles | Volume 23, issue 2
https://doi.org/10.5194/nhess-23-643-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-23-643-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Feb 2023
Research article |
| 10 Feb 2023
| 10 Feb 2023
Characteristics and causes of natural and human-induced landslides in a tropical mountainous region: the rift flank west of Lake Kivu (Democratic Republic of the Congo)
Jean-Claude Maki Mateso
CORRESPONDING AUTHOR
Department of Geophysics, Centre de Recherche en Sciences Naturelles, Lwiro, Democratic Republic of the Congo
Environmental Sciences, Earth and Life Institute, Université catholique de Louvain, Louvain-La-Neuve, Belgium
Charles L. Bielders
Environmental Sciences, Earth and Life Institute, Université catholique de Louvain, Louvain-La-Neuve, Belgium
Elise Monsieurs
Department of Earth Sciences, Royal Museum for Central Africa, Tervuren, Belgium
Department of Geography, University of Liège, Liège, Belgium
F.R.S.-FNRS, Brussels, Belgium
Arthur Depicker
Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
Benoît Smets
Department of Earth Sciences, Royal Museum for Central Africa, Tervuren, Belgium
Department of Geography, Vrije Universiteit Brussel, Brussels, Belgium
Théophile Tambala
Department of Geophysics, Centre de Recherche en Sciences Naturelles, Lwiro, Democratic Republic of the Congo
Luc Bagalwa Mateso
Department of Geophysics, Centre de Recherche en Sciences Naturelles, Lwiro, Democratic Republic of the Congo
Olivier Dewitte
Department of Earth Sciences, Royal Museum for Central Africa, Tervuren, Belgium
Related authors
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Antoine Dille, Olivier Dewitte, Jente Broeckx, Koen Verbist, Andile Sindiso Dube, Jean Poesen, and Matthias Vanmaercke
EGUsphere, https://doi.org/10.5194/egusphere-2025-5056, https://doi.org/10.5194/egusphere-2025-5056, 2025
This preprint is open for discussion and under review for Natural Hazards and Earth System Sciences (NHESS).
Short summary
Short summary
In mountain regions, intense rainfall can trigger thousands of landslides within hours. Yet, while most efforts focus on where landslides start, the worst impacts often occur far downstream because slope material can mix with large runoffs. Studying Cyclone Idai’s impacts in eastern Zimbabwe, we found that landslide sources explain only one-fifth of total population exposure, highlighting the need to consider the full landslide–flood continuum to better protect people and plan safer landscapes.
Axel A. J. Deijns, Olivier Dewitte, Wim Thiery, Nicolas d'Oreye, Jean-Philippe Malet, and François Kervyn
Nat. Hazards Earth Syst. Sci., 22, 3679–3700, https://doi.org/10.5194/nhess-22-3679-2022, https://doi.org/10.5194/nhess-22-3679-2022, 2022
Short summary
Short summary
Landslides and flash floods are rainfall-induced processes that often co-occur and interact, generally very quickly. In mountainous cloud-covered environments, determining when these processes occur remains challenging. We propose a regional methodology using open-access satellite radar images that allow for the timing of landslide and flash floods events, in the contrasting landscapes of tropical Africa, with an accuracy of up to a few days. The methodology shows potential for transferability.
Arthur Depicker, Gerard Govers, Liesbet Jacobs, Benjamin Campforts, Judith Uwihirwe, and Olivier Dewitte
Earth Surf. Dynam., 9, 445–462, https://doi.org/10.5194/esurf-9-445-2021, https://doi.org/10.5194/esurf-9-445-2021, 2021
Short summary
Short summary
We investigated how shallow landslide occurrence is impacted by deforestation and rifting in the North Tanganyika–Kivu rift region (Africa). We developed a new approach to calculate landslide erosion rates based on an inventory compiled in biased © Google Earth imagery. We find that deforestation increases landslide erosion by a factor of 2–8 and for a period of roughly 15 years. However, the exact impact of deforestation depends on the geomorphic context of the landscape (rejuvenated/relict).
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Short summary
This research highlights the importance of human activities on the occurrence of landslides and the need to consider this context when studying hillslope instability patterns in regions under anthropogenic pressure. Also, this study highlights the importance of considering the timing of landslides and hence the added value of using historical information for compiling an inventory.
This research highlights the importance of human activities on the occurrence of landslides and...
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