Study of a mesoscale anticyclonic eddy in the western part of the Gulf of Lion

Hu, Zheng; Petrenko, Anne; Doglioli, Andrea M.; Dekeyser, I.

doi:10.1016/j.jmarsys.2011.02.008

Cited by 35 publications

(42 citation statements)

References 23 publications

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“…Two or three times between spring and autumn, the potential energy stored in the eddy is released from the GoL producing a strong eddy in the Catalan Sea. However, as mentioned by Hu et al (2011), the LATEX eddy may vanish before southward transportation of heat or potential energy. In the case of a short period of pure Tramontane wind, an anticyclonic eddy is immediately created by the wind stress curl but the potential energy stored in its structure is not strong enough: easterlies or local northerlies are still able to disperse the water masses.…”

Section: Resultsmentioning

confidence: 98%

“…An interaction between the eddy and the coast is possible, (but the mirror effect would lead to northward displacement) or with the Northern Current (Hu et al 2011). However, wind forcing is more likely responsible for the southward movement of this structure.…”

Section: Resultsmentioning

confidence: 99%

“…Flexas et al (2002) also demonstrated that some coastal trapped wave mode characteristics are in agreement with the measured length scales and periods. During summer, the southwestern corner of the GoL is characterized by a large anticyclonic circulation (recently named the LATEX eddy according to the LAgrangian Transport EXperiment devoted to his monitoring) already described by Millot (1982) and recently investigated in detail by Hu et al (2011). On the Catalan Shelf, intense persistent eddies (hereafter called CATALAN eddies) have often been observed, mainly at the end of summer.…”

Section: Introductionmentioning

confidence: 97%

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Eddy resolving modelling of the Gulf of Lions and Catalan Sea

2011

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Eddy resolving modelling of the Gulf of Lions and Catalan Sea

2011

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“…The last group mainly studied the evolution processes of individual ocean eddies and the changes of their thermohaline structures (e.g. Chen et al, 2010;Fang and Morrow, 2003;Hu et al, 2011;Wang et al, 2008a;Wu and Chiang, 2007;Yuan et al, 2007).…”

mentioning

confidence: 99%

Major migration corridors of mesoscale ocean eddies in the South China Sea from 1992 to 2012

Liang

et al. 2016

Journal of Marine Systems

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It has become a routine to automatically identify mesoscale ocean eddies in the world's oceans and reconstruct their trajectories from remote sensing data. However, the major migration pathways along which eddies mainly propagate are not clear, particularly in the South China Sea (SCS). This study utilized a trajectory partition-andgroup method to quantitatively measure and group trajectories of eddies in the SCS from 1992 to 2012 to extract their major migration corridors. The trajectories were first simplified into segments using the minimum description length (MDL) principle, their origin and destination (OD) points, and their trajectory partitions (TP) between two consecutive tracking times, respectively. The MDL-, OD-, and TP-based segments were then respectively grouped into clusters using the density-based spatial clustering of applications with noise (DBSCAN) algorithm. Representative trajectories, i.e., the major migration corridors, were then extracted from different clusters. Results show that the MDL-based corridors are the most tenable in revealing the migration corridors of eddies in the SCS. The major MDL-based migration corridors of both anticyclonic and cyclonic eddy in the SCS mainly extend westward and show a meridional propagation toward the equator. The different major migration corridors in the northern, central, and southern SCS could be attributed to the various influences of seabed topography and/ or background currents in these regions.

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“…These areas are characterised by the development of a significant number of mesoscale eddies with a diameter between 15-20 km (tab. 2) (see also Casella et al, 2011;Hu et al, 2011;Kersalé et al, 2013). Since the spatial resolution of the altimetry is about 14 km, this product has some limits in catching these mesoscale structures and the dynamics induced by them.…”

Section: Roms_nwmed Data Comparisonmentioning

confidence: 99%

Ecosystem dynamics in the Liguro-Provençal Basin: the role of eddies in the biological production.

et al. 2014

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We studied, numerically, the role of mesoscale structures in the Ligurian Sea (NW Mediterranean Sea) as a possible factor affecting the spatial distribution of the chlorophyll spring bloom. We used the Regional Ocean Modelling System (ROMS) configured for the NW Mediterranean Sea (ROMS_NWMed) and satellite derived Altimetric, Sea Surface Temperature and Chlorophyll concentration data, for years 2009 and 2010. Comparison of model output with satellite and in situ data shows agreement between numerical results and observations. There is a significant interannual variability in concentration and distribution of chlorophyll in the basin during the two years of the study. The ROMS_NWMed simulation reveals the formation of a number of mesoscale eddies along the Northern rim current characterized by a long lifetime and closed streamlines. A significantly higher number of eddies was found during the chlorophyll-rich year 2010. The high number of eddies, due to the "eddy pumping mechanism", generate spatially and temporally localised fluxes of nutrients into the euphotic zone, thus contributing to the fertilization of the Ligurian Sea. Therefore, eddies in the Ligurian rim current can have important effects on the location of development of the main patch of chlorophyll spring bloom and consequently on local ecosystem dynamics.

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Study of a mesoscale anticyclonic eddy in the western part of the Gulf of Lion

Cited by 35 publications

References 23 publications

Eddy resolving modelling of the Gulf of Lions and Catalan Sea

Eddy resolving modelling of the Gulf of Lions and Catalan Sea

Major migration corridors of mesoscale ocean eddies in the South China Sea from 1992 to 2012

Ecosystem dynamics in the Liguro-Provençal Basin: the role of eddies in the biological production.

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