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Rapid subduction in the deep North Western Mediterranean

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Author(s): J. A. Aguilar | A. Albert | M. Anghinolfi | G. Anton | S. Anvar | M. Ardid | A. C. Assis Jesus | T. Astraatmadja | J.-J. Aubert | R. Auer | B. Baret | S. Basa | M. Bazzotti | V. Bertin | S. Biagi | C. Bigongiari | M. Bou-Cabo | M. C. Bouwhuis | A. Brown | J. Brunner | J. Busto | F. Camarena | A. Capone | G. Carminati | J. Carr | D. Castel | E. Castorina | V. Cavasinni | S. Cecchini | Ph. Charvis | T. Chiarusi | M. Circella | R. Coniglione | H. Costantini | N. Cottini | P. Coyle | C. Curtil | G. De Bonis | M. P. Decowski | I. Dekeyser | A. Deschamps | C. Distefano | C. Donzaud | D. Dornic | D. Drouhin | T. Eberl | U. Emanuele | J.-P. Ernenwein | S. Escoffier | F. Fehr | V. Flaminio | K. Fratini | U. Fritsch | J.-L. Fuda | G. Giacomelli | J. P. Gómez-González | K. Graf | G. Guillard | G. Halladjian | G. Hallewell | H. van Haren | A. J. Heijboer | Y. Hello | J. J. Hernández-Rey | J. Hößl | M. de Jong | N. Kalantar-Nayestanaki | O. Kalekin | A. Kappes | U. Katz | P. Kooijman | C. Kopper | A. Kouchner | W. Kretschmer | R. Lahmann | P. Lamare | G. Lambard | G. Larosa | H. Laschinsky | D. Lefèvre | G. Lelaizant | G. Lim | D. Lo Presti | H. Loehner | S. Loucatos | F. Lucarelli | K. Lyons | S. Mangano | M. Marcelin | A. Margiotta | J. A. Martinez-Mora | G. Maurin | A. Mazure | M. Melissas | T. Montaruli | M. Morganti | L. Moscoso | H. Motz | C. Naumann | M. Neff | R. Ostasch | G. Palioselitis | G. E. Păvălaş | P. Payre | J. Petrovic | P. Piattelli | N. Picot-Clemente | C. Picq | R. Pillet | V. Popa | T. Pradier | E. Presani | C. Racca | A. Radu | C. Reed | G. Riccobene | C. Richardt | M. Rujoiu | G. V. Russo | F. Salesa | F. Schoeck | J.-P. Schuller | R. Shanidze | F. Simeone | M. Spurio | J. J. M. Steijger | Th. Stolarczyk | C. Tamburini | L. Tasca | I. Taupier-Letage | S. Toscano | B. Vallage | V. Van Elewyck | M. Vecchi | P. Vernin | G. Wijnker | E. de Wolf | H. Yepes | D. Zaborov | J. D. Zornoza | J. Zúñiga

Journal: Ocean Science Discussions (OSD)
ISSN 1812-0806

Volume: 7;
Issue: 2;
Start page: 739;
Date: 2010;
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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.
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