ACCURACY ASSESSMENT OF COASTAL TOPOGRAPHY DERIVED FROM UAV IMAGES

This article reviews current scientific literature in order to define vulnerability in the context of coastal Bangladesh facing cyclonic flooding. A new metric, called the socio-spatial vulnerability index, is defined as a function of both the probability of the cyclonic flood hazard and the sensitivity of delta inhabitants. The main result shows that three very densely populated districts, located in the Ganges delta tidal floodplain, are highly vulnerable to cyclonic flooding.

Climate change is leading to an increase in extreme events and enforces the development of adaptation strategies to face coastal risk. These strategies modify the inequalities barely considered during the decision-making process and question the resilience of these territories. On the French Atlantic coast, the study reveals that the managed retreat strategy seems the most sustainable over time, while the holding the coastline strategy reinforces inequalities and costs for the whole society.