WESTMEDFLUX-2

Type Oceanographic cruise
Ship L'Atalante
Ship owner Ifremer
Dates 12/04/2018 - 26/04/2018
Chief scientist(s) POORT Jeffrey , GORINI Christian

INSTITUT DES SCIENCES DE LA TERRE DE PARIS - UMR 7193

4 place Jussieu

75005 Paris

+33 (0)1 44 27 52 73

direction-istep@upmc.fr

http://istep.sorbonne-universite.fr/fr/index.html

DOI 10.17600/18000402
Objective

The WESTMEDFLUX-2 oceanographic cruise is part of the project that studies the presence of thermal anomalies in the ocean-continent transitions of the Western Mediterranean. The proposed cruise follows WESTMEDFLUX that took place in 2016 and that resulted in mapping regional trends of thermicity in in the Gulf of Lion, offshore Baleares and Sardinia. It also pointed out to the existence of several local heat flow anomalies in particular on the South Balearic slope and deep basin. In the deep oceanic basin, strong anomalies seem to be merely associated to salt diapiric structures, but on the rifted continent and transition zone, other heat sink and sources are suggested (e.g., bottom water currents, slope instabilities and focused fluid migrations). In order to better understand the source of these anomalies and the link with the crustal nature and structuring of the margin, we propose on the South-Balearic margin additional close-spaced heat flow measurement, sediment coring and dredging sites. Sediment cores will be used for turbidite and contourite studies and for geochemical analysis of pore fluids. The dredging operations aim an estimation of age and nature of volcanic rock material from sea mounts.

Data managed by SISMER

Sampling operations

Bibliography

Publications

Bellucci Massimo, Poort Jeffrey, Lucazeau Francis, Rolandone Frédérique, Do Couto Damien, Blondel Simon, Rabineau MarinaORCID, Aslanian DanielORCID, Moulin MarylineORCID, Pellen Romain, Leroux EstelleORCID, Vázquez Juan-Tomás, Gorini Christian (2024). New heat flow data on the South Balearic margin: Evidence of regional fluid circulation system. Tectonophysics, 870, 230155 (15p.). https://doi.org/10.1016/j.tecto.2023.230155


Bellucci Massimo, Aslanian DanielORCID, Moulin MarylineORCID, Rabineau MarinaORCID, Leroux EstelleORCID, Pellen Romain, Poort Jeffrey, Del Ben Anna, Gorini Christian, Camerlenghi Angelo (2021). Salt morphologies and crustal segmentation relationship: New insights from the Western Mediterranean Sea. Earth-science Reviews, 222, 103818 (21p.). Publisher's official version : https://doi.org/10.1016/j.earscirev.2021.103818 , Open Access version : https://archimer.ifremer.fr/doc/00724/83641/


Cattaneo Antonio, Badhani Shray, Caradonna Cristina, Bellucci Massimo, Leroux Estelle, Babonneau Nathalie, Garziglia Sébastien, Poort Jeffrey, Akhmanov Grigorii G., Bayon Germain, Dennielou Bernard, Jouet Gwenäel, Migeon Sébastien, Rabineau Marina, Droz Laurence, Clare Michael (2020). The Last Glacial Maximum Balearic Abyssal Plain megabed revisited. Geological Society, London, Special Publications, 500(1), 341-357. https://doi.org/10.1144/SP500-2019-188