Hydrodynamic dataset from the UPCAST and CASSISED campaigns in the Cassidaigne canyon (NW Mediterranean Sea)
In the Gulf of Lions, Northwestern Mediterranean Sea, the Cassidaigne submarine canyon is located in an active circulation area. Water movements are modulated both by westerly and easterly winds and by the Northern Current's mesoscale structures. The Cassidaigne canyon interacts with the general circulation inducing locally complex hydrodynamic processes. In 2017 and 2019, two oceanographic cruises were carried out in the Cassidaigne canyon area to gather current and temperature data. 2 ADCPs were moored on the shelf at 100 m depth around the canyon head, and 3 ADCPs were moored along the canyon axis from its head at 400 m depth to the base of the continental slope at 1900 m depth. STBD turbidimeters were moored in the canyon head and gorge to quantify sediment transport in the canyon. In addition, three Mastodon-2d thermistor lines were moored around the canyon head. Current measurements revealed a local circulation modulated by the morphology of the canyon depending on the stratification. Cross-canyon currents were recorded during Northern Current intrusion events. Temperature measurements revealed the generation of upwelling events under strong westerly winds. Near the bottom, these in-situ measurements revealed turbidity currents related to the canyon internal hydrodynamics.
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| Author(s)Auteur(s) | BRUN Lenaig
(IFREMER, University of Brest, UMR 6523 CNRS, IRD, Laboratoire d'Océanographie Physique et Spatiale, Plouzané, France)
PAIRAUD Ivane (IFREMER, University of Brest, UMR 6523 CNRS, IRD, Laboratoire d'Océanographie Physique et Spatiale, Plouzané, France) SILVA JACINTO Ricardo (IFREMER, Geo-Ocean, University of Brest, CNRS, UMR 6538, F-29280, Plouzané, France) GARREAU Pierre (IFREMER, University of Brest, UMR 6523 CNRS, IRD, Laboratoire d'Océanographie Physique et Spatiale, Plouzané, France) DENNIELOU Bernard (IFREMER, Geo-Ocean, University of Brest, CNRS, UMR 6538, F-29280, Plouzané, France) |
| Contact(s)Contact(s) | SEANOE
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| SourceSource |
The authors acknowledge the technical team of the French Oceanographic Fleet (FOF) and the crews of the R/V THETYS II and R/V L’EUROPE for their contribution to the field experiments. The authors also thank Valérie Garnier, Christophe Ravel, Deny Malengros and Christel Pinazo for their help during the UPCAST campaign and Ronan Apprioual, Mikaël Roudaut and Jérémie Gouriou for the mooring deployments during the CASSISED cruise. |
| LineageGénéalogie |
ADCP and Mastodon-2d from UPCAST : - Pressure and temperature from Mastodon-2d lines (Mastodon-2d B', C and D; 10 sensors; 0.1°C of precision; Lazure Pascal, Le Berre David, Gautier Laurent (2015). Mastodon Mooring System To Measure Seabed Temperature Data Logger With Ballast, Release Device at European Continental Shelf . Sea Technology , 56(10), 19-21) - Temperature, current velocities and echo intensity from Teledyne-RDI ADCP 300 kHz (ADCP B; at 125 m depth; 10-minute sampling period) ADCPs and STBD turbidimeters from CASSISED : - Temperature, currents velocities and echo intensity from Teledyne-RDI ADCPs (Shelf ADCP at 86 m depth, 300 kHz and 15-minute sampling period; ADCP PeerGynt1 at 322 m depth, 300 kHz and 10-minute sampling period; ADCP PeerGynt2 at 1528 m depth, 300 kHz and 10-minute sampling period; ADCP Aniitra at 1606 m depth, 75 kHz and 10-minute sampling period) - Turbidity from STBD turbidimeters on the lines PeerGynt1 and PeerGynt2 30 m above the seabed. |
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Citation proposalCiter la ressource
Brun Lenaig, Pairaud Ivane, Silva Jacinto Ricardo, Garreau Pierre, Dennielou Bernard (2023). Hydrodynamic dataset from the UPCAST and CASSISED campaigns in the Cassidaigne canyon (NW Mediterranean Sea). SEANOE. https://doi.org/10.17882/92820
