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241.
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244.More information
From August, 24th to 26th 2011, sea rose to heights superior to 2 m causing damage to property and migration of populations of the coastal district of Gonzagueville in Abidjan. Press in Côte d'Ivoire raised the exclusive character of these events. But, they are connected to the global environmental changes which exercise an additional pressure on the coastal zone of port cities such Abidjan. The socio-spatial organization of the city of Abidjan highlights the vulnerability of the poor populations of Gonzagueville which occupy the coastal parts and are in the front line at the time of sea level rise. However, their capacity of reaction allows finding local solutions in the undergone phenomenon. To understand this process, informal inquiries were led with the victims of sea level rise of Gonzagueville coupled with direct observation and a local press review. As such, the resilience process of the victims of Gonzagueville declines in several phases follow-up of the expression of the generosity of the authorities towards them. Spontaneity of that form of resilience leads to a recurring exposure at the risk and is little effective in front of uncertainties in the assessment of risks connected to the nowadays global environmental changes. For that purpose, the article proposes rather the preventive resilience consisting of measures to prevent risks incurred by the Abidjan's populations.
Keywords: montée des eaux de la mer, littoral, résilience locale, Gonzagueville, Côte d'Ivoire, sea level rise, coast, local resilience, Gonzagueville, Côte d'Ivoire
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246.
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248.More information
The littoral morphology of the Bermudas is an erosional morphology in limestones, the main processes being mechanical action and solution. The temperatures, in January and February, of the waters washing the Bermudas, are low enough to prevent the growing of true coral reefs. Therefore, it is not the morphology of a coral reef.The predominance of wave-cut cliffs is the most striking feature, despite the low and gently rolling topography. There are, however, other types of coasts on the islands, the mangrove being found on many sheltered shores. The writer thus opposes the sheltered shores of the sounds to the ones exposed on the southcoast, while the shores of the north and north-east coasts belong to an intermediate type.The steplike arrangement of the coastal forms of solution of the Bermudas limestones is primarily linked to the amount of the tidal range. These features are similar to those described on the shores of the warm seas, where the tide is negligible or weak.The Bermudas occupy an intermediate position between the regions where reefs are built by corals, and those, to the north, where solution, helped by other processes, occurs without compensation.
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