Monitoring seafloor Deformation and Assessing Landslide hazards associated with fluid pressures (Nice slope)

研究区-尼斯斜坡（法国）-嵌套在人口稠密的地区，高度暴露于地质灾害，并因1979年灾难性的海底滑坡而闻名。最近的分析表明，存在着活跃的变形过程，这与陆棚断裂边缘的剪切带有关，这是一个容易发生边坡破坏的区域。该地区今天被认为是滑坡启动研究的天然实验室。该项目的主要挑战性科学任务是揭示外部因素（与降水和沉积物负荷有关的地下水活动）与其危险后果之间的联系。更具体地说，我们建议监测斜坡位移率，流体压力和地下水示踪剂沿着不同的位置，使用创新的原位海底仪器在现有的EMSO实时网络。结果将使我们能够评估数值的斜坡响应外部机制的故障的概率。

The study zone - the Nice Slope (France) - is nested in heavily populated areas, highly exposed to geohazards and is sadly famous for the 1979 catastrophic submarine landslide. Recent analyses have suggested the presence of active deformation processes linked to the presence of shear zones at the edge of the shelf break, an area susceptible to slope failure. The area is considered today as a natural laboratory for landslide initiation studies. The major challenging scientific task in this project is to unravel the coupling between external factors (groundwater activity related to precipitation and sediment loading) and their hazardous consequences. More specifically, we propose to monitor the slope displacement rates, fluid pressure and groundwater tracers along different locations using innovative in situ seafloor instruments in an existing the EMSO real-time network. Results will enable us to assess numerically the probability of failure of the slope in response to external mechanisms.