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Ocean Science An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/osd-7-739-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/osd-7-739-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

  24 Mar 2010

24 Mar 2010

Review status
This discussion paper is a preprint. It has been under review for the journal Ocean Science (OS). The revised manuscript was not accepted.

Rapid subduction in the deep North Western Mediterranean

J. A. Aguilar1, A. Albert2, M. Anghinolfi3, G. Anton4, S. Anvar5, M. Ardid6, A. C. Assis Jesus7, T. Astraatmadja7,35, J.-J. Aubert8, R. Auer4, B. Baret9, S. Basa10, M. Bazzotti11,12, V. Bertin8, S. Biagi11,12, C. Bigongiari1, M. Bou-Cabo6, M. C. Bouwhuis7, A. Brown8, J. Brunner8,*, J. Busto8, F. Camarena6, A. Capone13,14, G. Carminati11,12, J. Carr8, D. Castel2, E. Castorina15,16, V. Cavasinni15,16, S. Cecchini12,17, Ph. Charvis18, T. Chiarusi12, M. Circella19, R. Coniglione20, H. Costantini3, N. Cottini21, P. Coyle8, C. Curtil8, G. De Bonis13,14, M. P. Decowski7, I. Dekeyser22, A. Deschamps18, C. Distefano20, C. Donzaud9,23, D. Dornic8,1, D. Drouhin2, T. Eberl4, U. Emanuele1, J.-P. Ernenwein8, S. Escoffier8, F. Fehr4, V. Flaminio15,16, K. Fratini24,3, U. Fritsch4, J.-L. Fuda22, G. Giacomelli11,12, J. P. Gómez-González1, K. Graf4, G. Guillard25, G. Halladjian8, G. Hallewell8, H. van Haren26, A. J. Heijboer7, Y. Hello18, J. J. Hernández-Rey1, J. Hößl4, M. de Jong7,35, N. Kalantar-Nayestanaki27, O. Kalekin4, A. Kappes4, U. Katz4, P. Kooijman7,28,29, C. Kopper4, A. Kouchner9, W. Kretschmer4, R. Lahmann4, P. Lamare5, G. Lambard8, G. Larosa6, H. Laschinsky4, D. Lefèvre22, G. Lelaizant8, G. Lim7,29, D. Lo Presti30, H. Loehner27, S. Loucatos21, F. Lucarelli13,14, K. Lyons25, S. Mangano1, M. Marcelin10, A. Margiotta11,12, J. A. Martinez-Mora6, G. Maurin21, A. Mazure10, M. Melissas8, T. Montaruli19,31, M. Morganti15,16, L. Moscoso9,21, H. Motz4, C. Naumann21, M. Neff4, R. Ostasch4, G. Palioselitis7, G. E. Păvălaş32, P. Payre8, J. Petrovic7, P. Piattelli20, N. Picot-Clemente8, C. Picq21, R. Pillet18, V. Popa32, T. Pradier25, E. Presani7, C. Racca2, A. Radu32, C. Reed7,8, G. Riccobene20, C. Richardt4, M. Rujoiu32, G. V. Russo30, F. Salesa1, F. Schoeck4, J.-P. Schuller21, R. Shanidze4, F. Simeone14, M. Spurio11,12, J. J. M. Steijger7, Th. Stolarczyk21, C. Tamburini22, L. Tasca10, I. Taupier-Letage34,**, S. Toscano1, B. Vallage21, V. Van Elewyck9, M. Vecchi13, P. Vernin21, G. Wijnker7, E. de Wolf7,29, H. Yepes1, D. Zaborov33, J. D. Zornoza1, and J. Zúñiga1 J. A. Aguilar et al.
  • 1IFIC – Instituto de Física Corpuscular, Edificios Investigación de Paterna, CSIC – Universitat de València, Apdo. de Correos 22085, 46071 Valencia, Spain
  • 2GRPHE – Institut universitaire de technologie de Colmar, 34 rue du Grillenbreit BP 50568 – 68008 Colmar, France
  • 3Dipartimento di Fisica dell'Università e Sezione INFN, Via Dodecaneso 33, 16146 Genova, Italy
  • 4Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
  • 5Direction des Sciences de la Matière – Institut de recherche sur les lois fondamentales de l'Univers Service d'Electronique des Détecteurs et d'Informatique, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
  • 6Institut d'Investigación per a la Gestío Integrada de les Zones Costaneres (IGIC) – Universitat Politècnica de València. C/Paranimf, 1., 46730 Gandia, Spain
  • 7FOM Instituut voor Subatomaire Fysica Nikhef, Science Park 105, 1098 XG Amsterdam, The Netherlands
  • 8CPPM – Centre de Physique des Particules de Marseille, CNRS/IN2P3 et Université de la Méditerranée, 163 Avenue de Luminy, Case 902, 13288 Marseille Cedex 9, France
  • 9APC – Laboratoire AstroParticule et Cosmologie, UMR 7164 (CNRS, Université Paris 7 Diderot, CEA, Observatoire de Paris) 10, rue Alice Domon et L'eonie Duquet 75205 Paris Cedex 13, France
  • 10LAM – Laboratoire d'Astrophysique de Marseille, CNRS/INSU et Université de Provence, Traverse du Siphon – Les Trois Lucs, BP 8, 13012 Marseille Cedex 12, France
  • 11Dipartimento di Fisica dell'Università e Sezione INFN, Viale Berti Pichat 6/2, 40127 Bologna, Italy
  • 12INFN – Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy
  • 13Dipartimento di Fisica dell'Università La Sapienza, P. le Aldo Moro 2, 00185 Roma, Italy
  • 14INFN – Sezione di Roma, P. le Aldo Moro 2, 00185 Roma, Italy
  • 15Dipartimento di Fisica dell'Università, Largo B. Pontecorvo 3, 56127 Pisa, Italy
  • 16INFN – Sezione di Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy
  • 17INAF-IASF, via P. Gobetti 101, 40129 Bologna, Italy
  • 18GéoSciences Azur, CNRS/INSU, IRD, Université de Nice Sophia-Antipolis, Université Pierre et Marie Curie – Observatoire Océanologique de Villefranche, BP48, 2 quai de la Darse, 06235 Villefranche-sur-Mer Cedex, France
  • 19INFN – Sezione di Bari, Via E. Orabona 4, 70126 Bari, Italy
  • 20INFN – Laboratori Nazionali del Sud (LNS), Via S. Sofia 44, 95123 Catania, Italy
  • 21Direction des Sciences de la Matière – Institut de recherche sur les lois fondamentales de l'Univers-Service de Physique des Particules, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
  • 22COM – Centre dOcéanologie de Marseille, CNRS/INSU et Université de la Méditerranée, 163 Avenue de Luminy, Case 901, 13288 Marseille Cedex 9, France
  • 23Université Paris-Sud 11 – Département de Physique – 91403 Orsay Cedex, France
  • 24Dipartimento di Fisica dell'Università, Via Dodecaneso, 16146 Genova, Italy
  • 25IPHC – Institut Pluridisciplinaire Hubert Curien, Université de Strasbourg et IN2P3/CNRS, 23 rue du Loess, BP 28, 67037 Strasbourg Cedex 2, France
  • 26Royal Netherlands Institute for Sea Research (NIOZ), Landsdiep 4, 1797 SZ 't Horntje (Texel), The Netherlands
  • 27Kernfysisch Versneller Instituut (KVI), University of Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands
  • 28Universiteit Utrecht, Faculteit Betawetenschappen, Princetonplein 5, 3584 CC Utrecht, The Netherlands
  • 29Universteit van Amsterdam, Institut voor Hoge-Energiefysika, Science Park 105, 1098 XG Amsterdam, The Netherlands
  • 30Dipartimento di Fisica ed Astronomia dell'Università, Viale Andrea Doria 6, 95125 Catania, Italy
  • 31University of Wisconsin – Madison, 53715, WI, USA
  • 32Institute for Space Sciences, 77125 Bucharest, Mágurele, Romania
  • 33ITEP – Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117218 Moscow, Russia
  • 34Laboratoire d'Oceanographie Physique et de Biogeochimie (LOPB), CNRS UMR 6535 Université de la Mediterranée, Centre d'Oceanologie de Marseille, Antenne de Toulon c/o IFREMER, BP 330, 83507 La Seyne, France
  • 35University of Leiden, The Netherlands
  • *on leave from: DESY, Platanenallee 6, 15738 Zeuthen, Germany
  • **not member of the ANTARES collaboration, but contributor to this paper

Abstract. An Acoustic Doppler Current Profiler (ADCP) moored at the deep-sea ANTARES neutrino telescope site near Toulon, France, measured downward vertical currents of amplitudes up to 0.03 m s−1 in spring 2006. The currents were accompanied by enhanced levels of acoustic reflection by a factor of about 10 and by horizontal currents reaching 0.35 m s−1. These observations coincided with high levels of bioluminescence detected by the telescope. Although during winter 2006 deep dense-water formation occurred in this area, episodes of high levels of suspended particles and large vertical currents continuing into the summer are not direct evidence of this process. It is hypothesized that the main process allowing for particles to be moved across the entire water column (2500 m) within a few days, is local convection, triggered by small-mesoscale phenomena, such as meanders including a bipolar vortex, linked with boundary current instabilities.

J. A. Aguilar et al.
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