EVALUATION OF AN OFFSHORE DISPOSAL SITE IN THE LOIRE ESTUARY THROUGH FIELD MONITORING AND 3D NUMERICAL MODELING

Régis Walther, Cyrielle Cayrol, Luc Hamm, A Delouis, D Lehay

Abstract


This communication presents the assessment of an offshore disposal site, named La Lambarde, located in open water offshore of the mouth of the Loire estuary in France. The site is used since 1986 by Port Authority of Nantes-Saint-Nazaire (GPMNSN) to relocate fresh sediment dredged for maintenance purposes in the access channel and port installations located along the estuary. A six-year study, commissioned by GPMNSN authorities to ARTELIA, started in 2007 to optimize the location of the disposal site and improve the knowledge of the suspended sediment regional dynamics.

Keywords


3D, hydro-sedimentary, sand mud mixture, estuary, dredging, dumping

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References


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DOI: https://doi.org/10.9753/icce.v34.management.24