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Understanding the occurrences of fault and landslide in the region of West-Cameroon using remote sensing and GIS techniques

Author

Listed:
  • Zakari Aretouyap

    (University of Dschang)

  • Franck Eitel G Kemgang

    (Geodesy Research Laboratory, National Institute of Cartography)

  • Janvier K Domra

    (University of Maroua)

  • Dieudonne Bisso

    (University of Yaounde I)

  • Philippe N Njandjock

    (University of Yaounde I)

Abstract

Remote sensing was used to visualize the West region with the purpose of investigating recent natural hazards observed in this area. Various approaches used based on multi-spectral information such as PCA, band compositions, NDVI, and texture analysis are used to investigate landslide and new faults in the region of West Cameroon. The combination of remote sensing techniques with fieldwork and photogrammetry has been probed again and helped to detect three (03) new faults and to characterise the recently assumed landslide as a rock fall characterised by an accumulation of fresh rock deposits downwards, from the edge to the valley. In this study, we extracted in this region all linear and curvilinear edges resulted from geomorphological features, geological structures, rock composition, vegetal tonal contrasts, soil moisture, and human activities. These features are terraces, linear valleys and cliffs, faults, joints, and other line weaknesses, tracks, buildings, roads and rivers. They are overlain on rivers, highways and digital elevation model maps for preliminary validation. Then, a post-processing fieldwork has been conducted to avoid any confusion with faults. The digital elevation model and the derived slope maps enabled fracturing to be discerned. Existing known faults have also been identified in this study.

Suggested Citation

  • Zakari Aretouyap & Franck Eitel G Kemgang & Janvier K Domra & Dieudonne Bisso & Philippe N Njandjock, 2021. "Understanding the occurrences of fault and landslide in the region of West-Cameroon using remote sensing and GIS techniques," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 109(2), pages 1589-1602, November.
    • Handle: RePEc:spr:nathaz:v:109:y:2021:i:2:d:10.1007_s11069-021-04890-8
    DOI: 10.1007/s11069-021-04890-8
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    References listed on IDEAS

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    1. Franck Mazas, 2019. "Extreme events: a framework for assessing natural hazards," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 98(3), pages 823-848, September.
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    Cited by:

    1. Fernand L. Mouassom & Alain T. Tamoffo, 2024. "Understanding the environmental conditions of the extreme precipitation event on June 20, 2015, in the city of Douala, Cameroon," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 120(13), pages 11527-11546, October.
    2. Sandra Céleste Tchato & Blaise Pascal Gounou Pokam & Marthe Mbond Ariane Gweth & Euloge Felix Kayo Pokam & André Michel Pouth Nkoma & Ibrahim Mbouombouo Ngapouth & Yvonne Poufone Koffi & Eliezer Mangu, 2023. "Possible Influence of Brittle Tectonics on the Main Road Network Built in the Central African Environment Using Remote Sensing and GIS," Sustainability, MDPI, vol. 15(21), pages 1-26, November.

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