|
|
|
| Registros recuperados: 16 | |
|
|
| Nolasco, Rita; Pires, Ana; Cordeiro, Nuno; Le Cann, Bernard; Dubert, Jesus. |
| The mean seasonal hydrography and circulation of the Western Iberian Margin (WIM) are studied by means of a high-resolution configuration of the Regional Oceanic Modeling System. A comparison of 5-year model averages for January and July with climatological datasets shows a general good agreement in the reproduction of the mean water mass properties and hydrographic distribution. We find that there is a prevailing tendency for slope poleward flow at about 80-100 km offshore at all latitudes from the surface to 1,500 m with strong vertical coupling. This northward flow, which is mainly along slope and amounts up to 8-10 cm s(-1), exhibits several mean flow recirculation regions on its way and evidences of an offshore pathway of poleward flow. Transports at... |
| Tipo: Text |
Palavras-chave: Western Iberian Margin; Numerical modeling; Poleward flow; Upwelling systems. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00163/27442/26232.pdf |
| |
|
|
| Reverdin, Gilles; Gascard, Jean-claude; Le Cann, Bernard; Prieur, Loic; Assenbaum, Michel; Lherminier, Pascale. |
| An anticyclonic mode water vortex and its environment were investigated from November 2000 to September 2001 in the northeast Atlantic (near 43.5 degrees N, 15 degrees-19 degrees W) with neutrally buoyant drifting floats, moored current meters, satellite altimetric sea surface height, and several hydrological surveys and sections. These observations reveal a coherent inner core (similar to 0 km in diameter) made of very oxygenated northeast Atlantic central waters (11 degrees-12.7 degrees C and 35.5-35.7 on the 1978 practical salinity scale) from 150 m down to about 750-m depth. The core presents high relative vorticity (up to approximately -0.5 times the Coriolis frequency f) within at least 10 km of its center, near 400-700 m. Peak velocity along the... |
| Tipo: Text |
|
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6357.pdf |
| |
|
|
| Le Cann, Bernard; Billant, Andre; Branellec, Pierre. |
| The Research Project ARCANE (Actions de Recherche sur la Circulation dans l'Atlantique Nord-Est) is designed to determine the transport of mass, heat and salt in the intergyre region of the North-East Atlantic. The specific objectives are the experimental study of the oceanic circulation in the neighbourhood of the lberian Peninsula Continental Slope and of the circulation and dispersion of the Mediterranean Water in the North-East Atlantic. ft is a joint project between the Centre Militaire d'Océanographie (CMO) of the Service Hydrographique et Océanographique de la Marine (SHOM) and the Laboratoire de Physique des Océans (LPO, Unité Mixte de Recherche lFREMER/CNRS/UBO), and took place between September 1996 and October 1999. Acoustic floats, of Marvor... |
| Tipo: Text |
|
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00230/34132/32609.pdf |
| |
|
|
| Le Cann, Bernard; Billant, Andre; Branellec, Pierre. |
| The Research Project ARCANE (Actions de Recherche sur la Circulation dans l'Atlantique Nord-Est) is designed to determine the transport of mass, heat and salt in the intergyre region of the North-East Atlantic. The specific objectives are the experimental study of the oceanic circulation in the neighbourhood of the Iberian Peninsula Continental Slope and of the circulation and dispersion of the Mediterranean Water in the North-East Atlantic. It is a joint project between the Centre Militaire d'Océanographie (CMO) of the Service Hydrographique et Océanographique de la Marine (SHOM) and the Laboratoire de Physique des Océans (LPO, Unité Mixte de Recherche IFREMERlCNRS/UBO), and tookplace between September 1996 and October 1999. Acoustic jloats, of Marvor and... |
| Tipo: Text |
|
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00233/34378/32788.pdf |
| |
|
|
| Le Cann, Bernard; Billant, Andre; Branellec, Pierre. |
| Le projet ARCANE (Actions de Recherche sur la Circulation dans l'Atlantique Nord-Est) a pour thématique la détermination des transports de masse, de chaleur et de sel dans l'Atlantique Nord-Est. Ses objectifs spécifiques sont l'étude expérimentale de la circulation au voisinage de la pente continentale à l'Ouest et au Nord de la Péninsule Ibérique, et de la circulation et de la dispersion de l'Eau Méditerranéenne en Atlantique Nord-Est. Il s'agit d'un projet commun entre le Centre Militaire d'Océanographie (CMO) du Service Hydrographique et Océanographique de la Marine (SHOM) et le Laboratoire de Physique des Océans (LPO, Unité Mixte de Recherche IFREMER/CNRS/UBO), qui doit se dérouler entre 1996 et 1999. Il prévoit la mise à l'eau de flotteurs acoustiques... |
| Tipo: Text |
|
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00210/32133/30590.pdf |
| |
|
|
| Le Cann, Bernard; Billant, Andre; Branellec, Pierre. |
| Le projet ARCANE (Actions de Recherche sur la Circulation dans l'Atlantique Nord-Est) a pour thématique la détermination des transports de masse, de chaleur et de sel dans l'Atlantique Nord-Est. Ses objectifs spécifiques sont l'étude expérimentale de la circulation au voisinage de la pente continentale à l'Ouest et au Nord de la Péninsule Ibérique, et de la circulation et de la dispersion de l'Eau Méditerranéenne en Atlantique Nord-Est. Il s'agit d'un projet commun entre le Centre Militaire d'Océanographie (CMO) du Service Hydrographique et Océanographique de la Marine (SHOM) et le Laboratoire de Physique des Océans (LPO) Unité Mixte de Recherche (IFREMER/CNRS/UBO), qui doit se dérouler entre 1996 et 1999. Il prévoit la mise à l'eau de flotteurs... |
| Tipo: Text |
|
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00210/32138/30596.pdf |
| |
|
| |
|
|
| Von Schuckmann, Karina; Le Traon, Pierre-yves; Smith, Neville; Pascual, Ananda; Brasseur, Pierre; Fennel, Katja; Djavidnia, Samy; Aaboe, Signe; Alvarez Fanjul, Enrique; Autret, Emmanuelle; Axell, Lars; Aznar, Roland; Benincasa, Mario; Bentamy, Abderrahim; Boberg, Fredrik; Bourdalle-badie, Romain; Nardelli, Bruno Buongiorno; Brando, Vittorio E.; Bricaud, Clement; Breivik, Lars-anders; Brewin, Robert J. W.; Capet, Arthur; Ceschin, Adrien; Ciliberti, Stefania; Cossarini, Gianpiero; De Alfonso, Marta; De Pascual Collar, Alvaro; De Kloe, Jos; Deshayes, Julie; Desportes, Charles; Drevillon, Marie; Drillet, Yann; Droghei, Riccardo; Dubois, Clotilde; Embury, Owen; Etienne, Helene; Fratianni, Claudia; Garcia Lafuente, Jesus; Garcia Sotillo, Marcos; Garric, Gilles; Gasparin, Florent; Gerin, Riccardo; Good, Simon; Gourrion, Jerome; Gregoire, Marilaure; Greiner, Eric; Guinehut, Stephanie; Gutknecht, Elodie; Hernandez, Fabrice; Hernandez, Olga; Hoyer, Jacob; Jackson, Laura; Jandt, Simon; Josey, Simon; Juza, Melanie; Kennedy, John; Kokkini, Zoi; Korres, Gerasimos; Kouts, Mariliis; Lagemaa, Priidik; Lavergne, Thomas; Le Cann, Bernard; Legeais, Jean-francois; Lemieux-dudon, Benedicte; Levier, Bruno; Lien, Vidar; Maljutenko, Ilja; Manzano, Fernando; Marcos, Marta; Marinova, Veselka; Masina, Simona; Mauri, Elena; Mayer, Michael; Melet, Angelique; Melin, Frederic; Meyssignac, Benoit; Monier, Maeva; Muller, Malte; Mulet, Sandrine; Naranjo, Cristina; Notarstefano, Giulio; Paulmier, Aurelien; Perez Gomez, Begona; Perez Gonzalez, Irene; Peneva, Elisaveta; Perruche, Coralie; Peterson, K. Andrew; Pinardi, Nadia; Pisano, Andrea; Pardo, Silvia; Poulain, Pierre-marie; Raj, Roshin P.; Raudsepp, Urmas; Ravdas, Michaelis; Reid, Rebecca; Rio, Marie-hélène; Salon, Stefano; Samuelsen, Annette; Sammartino, Michela; Sammartino, Simone; Sando, Anne Britt; Santoleri, Rosalia; Sathyendranath, Shubha; She, Jun; Simoncelli, Simona; Solidoro, Cosimo; Stoffelen, Ad; Storto, Andrea; Szerkely, Tanguy; Tamm, Susanne; Tietsche, Steffen; Tinker, Jonathan; Tintore, Joaquin; Trindade, Ana; Van Zanten, Daphne; Vandenbulcke, Luc; Verhoef, Anton; Verbrugge, Nathalie; Viktorsson, Lena; Wakelin, Sarah L.; Zacharioudaki, Anna; Zuo, Hao. |
| Tipo: Text |
|
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00601/71276/71010.pdf |
| |
|
|
| L'Hegaret, Pierre; Carton, Xavier; Ambar, Isabel; Menesguen, Claire; Hua, Bach Lien; Cherubin, Laurent; Aguiar, Ana; Le Cann, Bernard; Daniault, Nathalie; Serra, Nuno. |
| A collision of Mediterranean Water dipoles in the Gulf of Cadiz is studied here, using data from the MedTop and Semane experiments. First, a Mediterranean Water eddy (meddy) was surveyed hydrologically in November 2000 southwest of Cape Saint Vincent. Then, this meddy drifted northeastward from this position, accompanied by a cyclone (detected only via altimetry), thus forming a first dipole. In February 2001, a dipole of Mediterranean Water was measured hydrologically just after its formation near Portimão Canyon. This second dipole drifted southwestward. The western and eastern meddies had hydrological radii of about 22 and 25 km, respectively, with corresponding temperature and salinity maxima of (13.45°C, 36.78) and (11.40°C, 36.40). Rafos float... |
| Tipo: Text |
|
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00204/31565/29986.pdf |
| |
|
|
| Carton, Xavier; Le Cann, Bernard; Serpette, Alain; Dubert, Jesus. |
| In 1990, satellite observations revealed that an anticyclonic surface eddy (a SWODDY, for Slope Water Oceanic eDDY) followed a cycloidal trajectory north of the Iberian coast in the Bay of Biscay. To understand the mechanisms underlying such a trajectory, we study the evolution of an idealized surface eddy in a two-layer flat-bottom quasi-geostrophic model. The effect of several processes is studied, notably the presence of deep anticyclonic vorticity. This deep vorticity may result either from the tilting of the swoddy itself, or from the presence of an anticyclonic eddy of different origins, such as a meddy (Mediterranean Water EDDY). We also study the influence of a zonal coast south of the swoddy, via the "mirror effect". Firstly, a point-vortex model... |
| Tipo: Text |
Palavras-chave: Bay of Biscay; Anticyclonic eddies; Swoddy; Meddy; Point vortex dynamics; Trajectory; Quasi-geostrophic model; In-situ observations. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00125/23589/21478.pdf |
| |
|
|
| Serpette, A; Le Cann, Bernard; Colas, Francois. |
| Between 1994 and 2001, several experiments (ARCANE, SEFOS, INTERAFOS) were conducted to directly measure the general and mesoscale Lagrangian circulations over the Bay of Biscay abyssal plain and slopes. Two levels (~100 m and ~450 m) were selected to cover the North Atlantic Central Water range. Two types of Lagrangian instruments, drogued surface drifters tracked by satellite (Surdrift) and acoustically tracked subsurface floats (Rafos and Marvor), were used. Overall, more than 36 instrument-years were collected in the Bay of Biscay region (43-49°N, 01-12°W). The weak general circulation in the Bay of Biscay is seen to be highly influenced by the occurrence of several mesoscale coherent features, notably slope currents and eddies, and these affect the... |
| Tipo: Text |
Palavras-chave: Slope ocean exchanges; Mesoscale eddies; Slope current; Lagrangian floats and surface drifters; Bay of Biscay. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-6435.pdf |
| |
|
|
| Lazure, Pascal; Le Cann, Bernard; Bezaud, Marion. |
| Here, we report large, near-daily oscillations of near-bottom temperatures, with ranges of up to 11.5 °C at depths of 30–60 m in September 2011 around the Saint Pierre and Miquelon archipelago (south-eastern Canada). These oscillations were detected on velocity and temperature profiles from moorings in Miquelon Bay and on an array of near-bottom temperature sensors around the archipelago. The oscillations coincided with the seasonal stratification period. In addition to their remarkable range, they exhibited a near-diurnal period centred on the O1 tidal component (~26 h), contrasting with the dominant semi-diurnal sea-level periodicity in the area. They appear to be the manifestation of an internal wave, triggered by the diurnal surface tide and trapped by... |
| Tipo: Text |
|
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00457/56850/58687.pdf |
| |
|
|
| Le Cann, Bernard; Assenbaum, Michel; Gascard, Jean-claude; Reverdin, Gilles. |
| Lagrangian instruments and altimetry data are used to investigate the upper ( 0 to similar to 500 m) mean and mesoscale circulations in a region of the midlatitude northeast Atlantic (36 degrees - 47 degrees N, 13 degrees - 23 degrees W), a formation and subduction area of Subpolar Mode Water. Lagrangian data were collected between September 2000 and September 2001 with isobaric subsurface floats, totaling 34.0 float years, and surface drifting buoys, totaling 27.9 buoy years. The near-surface ( 0 - 100 m) mean circulation is dominated by two weak ( similar to 5 cm/s) eastward currents which veer southward in the domain. In the 100- to 500-m-deep layer, these eastward mean currents retroflect westward and form two anticyclonic circulation cells, opened to... |
| Tipo: Text |
Palavras-chave: Altimetry; Drifting buoys; Acoustic floats; Lagrangian circulation; Mesoscale eddies; Northeastern Atlantic. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-745.pdf |
| |
|
| |
|
|
| Guieu, C; Roy-barman, M; Leblond, N; Jeandel, C; Souhaut, M; Le Cann, Bernard; Dufour, A; Bournot, C. |
| In the framework of the Programme Ocean Multidisciplinaire Meso Echelle (POMME) experiment, a 1.5 year record (February 2001-June 2002) of downward particle flux at 400 m and 1000 m was measured by sediment traps at four moorings located in the northeast Atlantic between 39 degrees-43 degrees N and 17 degrees-19 degrees W. Thorium-230 was used to estimate sediment trap efficiency, revealing values ranging from 18.5 to 55%. The lowest trapping efficiency was observed for the trap having experienced the highest currents. Significant interannual variability between 2001 and 2002 was clearly linked to the differences observed in the mixed layer depth. At some sites, particulate organic carbon (POC) export was higher (up to a factor of 1.6) during summer than... |
| Tipo: Text |
Palavras-chave: Sediment traps; Carbon export; Biogenic and lithogenic tracers; Mesoscale circulation; Thorium isotopes. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/00000/10982/7422.pdf |
| |
|
| |
| Registros recuperados: 16 | |
|
|
|
