Evolution Pluvio - Thermique De 1950 a 2013 Au Senegal Oriental: Cas De La Region De Tambacounda

Faye, Mbagnick; Fall, Ababacar; Tine, Dome; Faye, Cheikh; Faye, B.; Ndiaye, A.

doi:10.21474/ijar01/10152

Cited by 2 publications

(4 citation statements)

References 4 publications

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“…There is no doubt that rainfall in sub-Saharan Africa decreased drastically in the late 1960s. Recent studies (Bodian, 2014;Descroix et al, 2015;Ndong, 2015;Faye et al, 2019) and climate data analyses have revealed that despite the "recovery" of rains reported by some researchers in recent years (Nouaceur, 2020), the 1950s and 1960s are by far the most regularly watered and wet. This period of "recovery" rainfall, very contrasting, alternating years of heavy rainfall and dry years (Faye et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Homes, streets, and fields were flooded with storm water. This situation had led to massive displacement of families and huge damage estimated at billions of CFA francs (Faye et al, 2019). 1960s, 1973, 2003 and 2009 Flooding, which has been recurring in recent years, is growing in the city.…”

Section: Rainfall Analysismentioning

confidence: 99%

“…Villeneuve and Richard (2007), referring to the intensity of precipitation, argue that a severe thunderstorm dumping 300 mm of water once a month is not the equivalent of 30 mm of rain every three days, in climatic terms, even if the total rainfall is the same at the end of the month. Indeed, the improvement in rainfall in West Africa (Bodian, 2014;Ndong, 2015;Faye et al, 2019;Nouaceur, 2020), has resulted in flooding phenomena thus increasing the vulnerability of the poorest populations. Floods remain a highly topical issue and growing scale in developing countries (Bruckmann et al, 2019).They generally occur in areas already recognized as critical, namely floodplains, which are relatively flat expanses, adjacent to a lake or river and likely to be flooded.…”

Section: Introductionmentioning

confidence: 99%

“…It consists of about twenty districts and districts, and is traversed by a fossil valley, the Mamacounda. The city is part of the Sudan climate zone characterized by rains ranging from 600 to 1200 mm (Sagna, 2007), it is one of the most watered regions in Senegal (Faye et al, 2019). The rainy season, set between June and October, reaches its rainfall peak in August.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the recurrence of floods in the city of Tambacounda, Senegal, in the context of climate change

Faye¹,

Tine²,

Fall³

et al. 2020

Nipp J Environ Sci

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The climate is now subject to wide variations. Storms with torrential rains are noted in the western USA, acute droughts in the Sahel, floods in Bangladesh, China, India and Vietnam, and rising temperatures leading to thaws in the Arctic and Antarctic. Climate models and observations reveal the frequency of extreme events and the resumption of rains in recent years. This increase in rainfall, which brings hope to developing countries dependent on rain-fed agriculture, is upsetting African cities by the recurrence of the floods it generates. These cities, resembling large villages, lack everything: failure or lack of sanitation networks, lack of adequate urban policy. The city of Tambacounda is under-equipped and facing the problem of flooding. After the rain, housing, infrastructure and roads are submerged by storm water. Analysis of control strategies shows that serious measures are not being taken to eradicate this scourge in the city. The control techniques (totally incoherent and totally disorderly) developed by the population revolve around the filling of ravines and low parts (45% of respondents), the installation of sandbags (40%), serving as, the storefront of dwellings and digging trenches to facilitate storm runoff (15%).The only reliable and effective technique (ONAS remediation plan) defined by the State is still in the draft stage.

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Section: Discussionmentioning

confidence: 99%

Section: Rainfall Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of the recurrence of floods in the city of Tambacounda, Senegal, in the context of climate change

Faye¹,

Tine²,

Fall³

et al. 2020

Nipp J Environ Sci

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Sécheresse climatique et dynamique éolienne sur la côte nord du Sénégal. Sensibilité dunaire et estimation des débits massiques dans le Gandiolais

Niang¹

2019

Naaj

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Dans les écosystèmes sahéliens, la forte réduction du couvert végétal, due à l’effet mémoire des sécheresses et d’une capacité moins importante de la force de rétention des sols, a provoqué la création de larges poches de déflation. La vulnérabilité aux transferts sédimentaires dans les paysages dunaires a été une conséquence manifeste du déficit hydrique et de la prépondérance des vitesses morphologiquement efficaces. L’effacement des forces de frottement, couplé aux vents compétents, entretient une remobilisation des cordons dunaires sur le littoral nord du Sénégal. L’objectif de cet article est de quantifier les fréquences directionnelles des vents, des débits solides afin de mieux apprécier l’importance des transferts sédimentaires qui participent à la dégradation progressive des sols des Niayes du Gandiol et à l’accentuation de la vulnérabilité de son système productif. L’approche quantitative permettra de mesurer potentiellement la masse de sédiments qui se dépose dans les cuvettes agricoles du Gandiolais au gré des vents dont le seuil critique est estimé localement à 5,63 m/s. Les cuvettes agricoles enregistrent un colmatage de 2,04 cm/an, créent une parenté génétique entre les formations dunaires et les bas-fonds et diminuent, par ricochet, la fertilité des cuvettes agricoles.

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Evolution Pluvio - Thermique De 1950 a 2013 Au Senegal Oriental: Cas De La Region De Tambacounda

Cited by 2 publications

References 4 publications

Analysis of the recurrence of floods in the city of Tambacounda, Senegal, in the context of climate change

Analysis of the recurrence of floods in the city of Tambacounda, Senegal, in the context of climate change

Sécheresse climatique et dynamique éolienne sur la côte nord du Sénégal. Sensibilité dunaire et estimation des débits massiques dans le Gandiolais

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