SERABEQ-03

Type Oceanographic cruise
Ship Thalia
Ship owner Ifremer
Dates 17/04/2015 - 28/04/2015
Chief scientist(s) EHRHOLD Axel ORCID, GREGOIRE Gwendoline

GEO-OCEAN - UMR 6538

Univ. Brest, CNRS, Ifremer, Univ. Bretagne Sud

Place Nicolas Copernic

29280 Plouzané

https://www.geo-ocean.fr/
DOI 10.17600/15009500
Objective Studying the sedimentary infilling of channels in the Bay of Brest and forming of sedimentary structures is part of a larger project to characterize sedimentary fluxes at different time scales from catchment basins to the Iroise Sea. The objective of this mission was to collect sedimentary cores aboard RV Thalia using Ifremer's Zenkovich and Küllenberg corers in the paleochannel of the inner and outer bay as well as on the main sedimentary bodies in the study sector. Cores taken in areas of significant sediment thicknesses, outside of the paleovalleys, will also make it possible to calibrate the seismic recording in the Bay of Brest and at its outflow and to conduct a paleo-environmental study. The acquisitions of this cruise should enable us to: 1) interpret the surface seismic analyses from the SERABEQ1 and 2 cruises, in terms of sedimentary facies; 2) trace the main stages of the history of the infilling and filling-up of the Bay of Brest during the last marine transgressions; 3) understand the processes by which sedimentary bodies are established and evolve; 4) obtain the sedimentary records required for the paleo-environmental study of the Bay of Brest. This involves studying foraminifera, pollens and diatoms to create a high resolution reconstruction of climate variations in the Holocene environment in the Bay of Brest. This falls under the Source to SINK project.

Published data

Valero Clara, Penaud Aurélie, Lambert Clément, Vidal Muriel, David Ophélie, Leroux Estelle, Pailler Yvan, Nicolas Clément, Poncin Olivier, Stephan Pierre, Siano Raffaele, Ehrhold Axel (2024). Holocene paleoenvironmental reconstructions in western Brittany (Bay of Brest) with a focus on the Neolithic-Bronze transition. https://doi.org/10.17882/99422


Data managed by SISMER

Sampling operations

Bibliography

Publications

Olivier Matthieu, Leroux EstelleORCID, Granjeon Didier, Le Hir Pierre, Rabineau MarinaORCID, Le Roy Pascal, Simplet LaureORCID, Ehrhold AxelORCID, Muller Héloïse (2023). Numerical modelling of tidal sediment dynamics in the Bay of Brest over the Holocene: How the use of a process-based model over paleoenvironmental reconstitutions can help understand long-term tidal deposits? Estuarine Coastal And Shelf Science, 285, 108309 (17p.). Publisher's official version : https://doi.org/10.1016/j.ecss.2023.108309 , Open Access version : https://archimer.ifremer.fr/doc/00833/94501/


Ehrhold AxelORCID, Jouet Gwenael, Le Roy Pascal, Jorry StephanORCID, Grall Jacques, Reixach Théo, Lambert Clément, Gregoire Gwendoline, Goslin JeromeORCID, Roubi AngeliqueORCID, Penaud Aurélie, Vidal Muriel, Siano Raffaele (2021). Fossil maerl beds as coastal indicators of late Holocene palaeo-environmental evolution in the Bay of Brest (Western France). Palaeogeography Palaeoclimatology Palaeoecology, 577, 110525 (25p.). Publisher's official version : https://doi.org/10.1016/j.palaeo.2021.110525 , Open Access version : https://archimer.ifremer.fr/doc/00699/81155/


Lambert Clément, Vidal Muriel, Penaud Aurélie, Le Roy Pascal, Goubert Evelyne, Pailler Yvan, Stephan Pierre, Ehrhold AxelORCID (2019). Palaeoenvironmental reconstructions during the Meso- to Neolithic transition (9.2–5.3 cal. ka BP) in Northwestern France: Palynological evidences. Holocene, 29(3), 380-402. Publisher's official version : https://doi.org/10.1177/0959683618816457 , Open Access version : https://archimer.ifremer.fr/doc/00472/58341/


Gregoire Gwendoline, Le Roy Pascal, Ehrhold AxelORCID, Jouet Gwenael, Garlan Thierry (2017). Control factors of Holocene sedimentary infilling in a semi-closed tidal estuarine-like system: the bay of Brest (France). Marine Geology, 385, 84-100. Publisher's official version : https://doi.org/10.1016/j.margeo.2016.11.005 , Open Access version : https://archimer.ifremer.fr/doc/00358/46968/


Thesis using campaign data

Olivier Matthieu (2022). Modélisation numérique de l'impact des courants tidaux sur le long-terme : application aux enregistrements sédimentaires Holocène de la rade de Brest / Numerical modelling of the impact of tidal currents over the long-term : application to Holocene sedimentary records from the bay of Brest. PhD Thesis, Université de Bretagne Occidentale.


Lambert Clément (2017). Signature paléoenvironnementale des séquences holocènes en Rade de Brest : forçages climatiques et anthropiques / Holocene palaeoenvironmental changes in the Bay of Brest (NW France) : evidences of climate and human forcings. PhD Thesis, Université de Bretagne Occidentale.


Gregoire Gwendoline (2016). Dynamique sédimentaire et évolution holocène d'un système macrotidal semi-fermé : l'exemple de la rade de Brest / Sediment dynamics and Holocene evolution of a semi-closed macrotidal system : the example of the bay of Brest. PhD Thesis, Université de Bretagne occidentale. https://archimer.ifremer.fr/doc/00498/60920/