Among the impacts of climate change in West Africa, coastal erosion is the most threatening disaster apart from floods and the increase in temperature. The southern coast of the Dakar region, as part of the most threatened coastal zones in West Africa, records the most current coastal damages in Dakar due to its coastline dynamics and low-lying area. This study was conducted in three littoral cells (Mbao, Bargny and Toubab Dialaw) and aims to investigate if there is a relationship between the coastline dynamic, topographic and slope and the contribution of the geomorphology along the southern coast of Dakar. It helps to understand better the role which plays the topography, Slope and geomorphology in coastal dynamics using remote sensing, cartographic tools and statistical methods. The Modified Normalized Different Water index (MNDWI) was employed to delineate the coastlines before computing the dynamic rate of the coastline using the Digital Shoreline Analysis System (DSAS) software. After that, Topography and Slope were determined using Digital Elevation Model (DEM). Then, the correlation between the coastline dynamic, topography and slope was analyzed through the coefficient of correlation and multiple linear regression model. High dynamic rates were noted in the littoral cells, where the topography and slope are low. In Mbao, there is a significant relationship between the coastline dynamic, topography and slope with a coefficient of correlation of about 0.63. In Bargny, the relationship is also significant, with a coefficient of 0.87. The relationship is not significant in Toubab Dialaw, where topography and Slope are high, with a coefficient of 0.15. We conclude that topography, slope and soil properties play an important role in the study area.

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Il existe plusieurs données relatives à la région du Saguenay-Lac-Saint-Jean dans le domaine de la santé et sécurité au travail (SST). Cependant, elles sont éparses et parfois incomplètes. Elles ne permettent pas de poser un regard global et exhaustif sur l'état de la situation ni de renseigner, avec précision, sur l'ampleur des principales problématiques et leurs interactions. L'objectif principal du présent article est de dresser un portrait de la région dans le domaine de la SST. La recherche réalisée est de nature exploratoire et descriptive. Elle a donné lieu à l'analyse secondaire de données publiées par des institutions nationales et des organismes régionaux.ABSTRACT. There are several data relating to the Saguenay-Lac-Saint-Jean region in the field of occupational health and safety (OHS). But they are scattered and sometimes incomplete. They do not provide a global and exhaustive view of the situation nor do they provide precise information on the extent of the main issues and their interactions. The main objective of this article is to provide a picture of the region in the field of OSH. The research carried out is exploratory and descriptive in nature. It entailed the analysis of data already published by national institutions and regional bodies, in order to understand and describe the regional situation in the field of OSH.