FN Archimer Export Format
PT J
TI Heat flow in the Western Mediterranean: Thermal anomalies on the margins, the seafloor and the transfer zones
BT 
AF Poort, Jeffrey
   Lucazeau, Francis
   Le Gal, Virginie
   Dal Cin, Michaela
   LEROUX, Estelle
   Bouzid, Abderrezak
   RABINEAU, Marina
   Palomino, Désirée
   Battani, Anne
   Akhmanov G., Grigory
   Ferrante G., Matilde
   Gafurova R., Dina
   Si Bachir, Roza
   Koptev, Alexander
   Tremblin, Maxime
   Bellucci, Massimo
   PELLEN, Romain
   Camerlenghi, Angelonghi
   MIGEON, Sebastien
   Alonso, Belen
   Ercilla, Gemma
   Yelles-Chaouche A., Karim
   Khlystov M., Oleg
AS 1:1;2:2;3:1,3;4:4;5:5;6:6;7:7;8:8;9:3;10:9;11:4;12:9;13:6;14:1;15:1;16:7;17:5;18:4;19:10;20:11;21:11;22:6;23:12;
FF 1:;2:;3:;4:;5:PDG-REM-GM-LGS;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:;16:;17:;18:;19:;20:;21:;22:;23:;
C1 Sorbonne Université, CNRS, Institut des Sciences de la Terre de Paris, ISTeP, Paris, France
   Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France
   IFP Energies nouvelles, Geosciences, Rueil-Malmaison, France
   Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Trieste, Italy
   IFREMER, 1625 Route de Sainte-Anne, 29280 Plouzané, France
   Centre de Recherche en Astronomie Astrophysique et Géophysique (CRAAG), Alger, Algeria
   Institut Universitaire Européen de la Mer (IUEM), Université de Bretagne Occidentale, Laboratoire Domaines Océaniques, UMR CNRS 6538, Plouzané, France
   Spanish Institute of Oceanography (IEO), Oceanographic Center of Málaga, Málaga, Spain
   UNESCO Centre on Marine Geology and Geophysics, Moscow State University, Geology Faculty, Moscow, Russia
   Université Côte d'Azur, CNRS, Observatoire de la Côte d'Azur, IRD, Géoazur UMR 7329, Valbonne, France
   Institut de Ciències del Mar (ICM), CSIC, Continental Margins Group, Barcelona, Spain
   Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia
C2 UNIV PARIS 06, FRANCE
   IPGP, FRANCE
   IFP ENERGIES NOUVELLES, FRANCE
   OGS, ITALY
   IFREMER, FRANCE
   CRAAG, ALGERIA
   CNRS, FRANCE
   IEO, SPAIN
   UNESCO, RUSSIA
   UNIV NICE, FRANCE
   ICM CSIC, SPAIN
   RUSSIAN ACAD SCI, RUSSIA
SI BREST
SE PDG-REM-GM-LGS
UM LGO
IN WOS Ifremer UPR
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 3.548
TC 16
UR https://archimer.ifremer.fr/doc/00588/70052/67992.pdf
LA English
DT Article
CR WESTMEDFLUX
BO L'Atalante
DE ;Heat flow;Western Mediterranean Sea;Liguro-Provencal basin;Algero-Balearic basin;Continental margins;Oceanic crust
AB The Western Mediterranean basin has been formed by Miocene back-arc extension and is underlain by a thin and young lithosphere. This young lithosphere is warm, as testified by an overall elevated offshore heat flow. Heat flow within the Western Mediterranean is, however, highly variable and existing data are unevenly distributed and poorly studied in the central part of the Liguro-Provençal and Algero-Balearic basins. This central part is floored by a young oceanic crust, bordered by different continental margins, cut by transform faults, and filled by up to 8 km of sediments. We present a total of 148 new heat flow data collected during the MedSalt and WestMedFlux cruises in 2015 and 2016 and aligned along seven regional profiles that show an important heat flow variability on the basin-scale, but also locally on the margins. A new heat flow map for the Western Mediterranean outlines the following regional features: (1) a higher average heat flow in the Algero-Balearic basin compared to the Liguro-Provençal basin (94 ± 13 mW/m2 and 78 ± 16 mW/m2, respectively), and (2) a regional thermal asymmetry in both basins, but with opposed heat flow trends. Up to 20% of this heat flow difference can be explained by sediment blanketing, but age and heterogeneity of ocean crust due to an asymmetric and polyphased opening of the basins are believed to have given the major thermal imprint. Estimates of the age of the oceanic crust based on the new heat flow suggest a considerably younger West Algerian basin (16–23 Ma) compared to the East Algerian basin and the West Sardinia oceanic floor (31–37 Ma). On the margins and ocean-continent transitions of the Western Mediterranean the new heat flow data point out the existence of two types of local anomalies (length scale 5–30 km): (1) locally increased heat flow up to 153 mW/m2 on the Gulf of Lion margin results from thermal refraction of large salt diapirs, and (2) the co-existing of both low (<50 mW/m2) and high (>110 mW/m2) heat flow areas on the South Balearic margin suggests a heat redistribution system. We suspect the lateral heat advection is resulting from a regional fluid circulation in the sediments associated to the widespread Plio-Pleistocene volcanism on the South Balearic margin. 
PY 2020
PD JAN
SO Marine Geology
SN 0025-3227
PU Elsevier BV
VL 419
UT 000508490400012
DI 10.1016/j.margeo.2019.106064
ID 70052
ER

EF