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Tendances pluviométriques et aléa inondation à l’Extrême-Nord Cameroun

Abstract : This paper aims to investigate the existence of a temporal connection between the flooding in the Far North region (21 events) and the observed trends in rainfall. The work is based on interannual and monthly rainfall recorded over a maximum period of 77 years (1935-2011) on nine stations. The selected stations and time periods obey the data quality criteria (no gaps) and the requirements of the World Meteorological Organization (30 observations). The months of July, August and September are high potential floods, and analyzes are performed especially there. So Mann-Kendall trend tests, Pettitt tests and Hubert segmentation procedure was applied in order to detect possible changes in rainfall recorded. Any more to examine the severity of meteorological drought, the standardized precipitation index method was used. The comparison of these results with flood events history collected and formatted for this study occurred in the region of the Far North Cameroon shows that there is no absolute link between trends rainfall and the flood events.
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https://hal.mines-ales.fr/hal-02894603
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Submitted on : Thursday, July 9, 2020 - 9:46:13 AM
Last modification on : Wednesday, August 5, 2020 - 3:50:04 AM

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  • HAL Id : hal-02894603, version 1

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Lucas Bouba, Sophie Sauvagnargues, Bernard Gonne, Pierre-Alain Ayral, Auguste Ombolo. Tendances pluviométriques et aléa inondation à l’Extrême-Nord Cameroun. Geo-Eco-Trop, 2017, 41 (3), pp.339-358. ⟨hal-02894603⟩

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