GOF-BOULDERS project

Geomorphological control on OFfshore BOULDERS transport along a wave dominated coast

Project managers : Mouncef Sedrati (LGO-UBS)

Project leaders : LGO UMR CNRS 6538 – UBS

Funding : ISblue (École interdisciplinaire de recherche pour la planète bleue) & LGO-UBS

Length of the project :

Presentation

On most of the rocky coasts of the world, coastal deposits of rock bouldersare frequently observed along the edges of rock platforms or at the top of rocky cliffs at different heights. Its deposits are organized in the form of distinct ridges, berms and mounds. These boulders are often described as boulders detached from the edges of the coastal platform, then transported and deposited along cliff tops and rocky shores. The size and shape of the boulders are determined by the litho-structural characteristics of the rock platforms and their transverse and longitudinal mobility on the rock platform is generally attributed to high-energy events (tsunamis, hurricanes or severe storms), but interpretation is difficult along coastlines where storms and tsunamis have occurred in the past, especially where marine deposits at high elevations are also present.

The main purpose of this project is toexamine the mechanisms of transverse mobility (onshore and mainly offshore) of emerged and submerged boulders from a deterministic and experimental approach on the site of Laghdira beach, Larache - Morocco.

Diver at sea and Axis Measurement, marking and photography to the scale of a submerged Boulder Boulder immergé

Project partners of GOF-BOULDERS