Patrick Huber: Exploitation du LIDAR embarqué dans l’étude des falaises littorales de Seine-Maritime; Normandie, France

Patrick Huber
Director: Dr. Marc-Henri Derron
Expert: Dr. Clément Michoud

The coastal chalk cliffs in Normandy located in the North-West of France, is an area especially affected by the erosion. lt inducts a rapid retreat of coastline. Due to its important anthropization, this coastline is an essential area in risk management and land use planning.

Coastal erosion is influenced by many interrelated factors. Due to its complexity, the coastal erosion is still a relatively unknown phenomenon.

This work aims to study the modalities of the erosion of the coastal cliffs of Normandy usíng data acquired between 2012 and 2015, thanks to a LiDAR (Light Detection and Ranging) installed on a boat. This study aims to:
1) Define the limitations of acquired data
2) Locate and characterize the main detected collapses
3) Study the role of lithology in the dynamics of erosion
4) Study the role of human activities in the dynamics of erosion
5) Perform a diachronic analysis of a major landslide near Dieppe
5) To use the LIDAR intensity for detecting the lithology and the ground movements
7) Define the role of lithology and general orientation of the cliff on fracturing.