The circulation pattern in the Mediterranean Sea: issues for modeller consideration

El-Geziry, Tarek M.; Bryden, Ian

doi:10.1080/1755876x.2010.11020116

Cited by 70 publications

(29 citation statements)

References 37 publications

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“…Geographically, the Sicilian Channel splits the Mediterranean Sea into two different regions; the Western Basin and the Eastern Basin. The water circulation in the Mediterranean Sea is very complex due to i) several spatial and temporal processes that take place at all scales such as the excess of evaporation over precipitation, adjacent rivers runoff and intense topographic and coastal influences, and ii) the presence of three distinct water masses which flow independently throughout the whole Mediterranean Sea; the surface, the intermediate and the deep waters controlling the general circulation pattern (El-Geziry & Bryden, 2010 ;Waldman et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Evaluating the historical sedimentation patterns in two different Mediterranean deep environments (Sardinia and Sicily Channels)

et al. 2019

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The sediment accumulation rate in the Sardinia and Sicily channels in the central part of the Mediterranean Sea was studied by using short-lived radionuclides (210Pb and 137Cs) in two deep sediment cores. Different sedimentation regimes were identified indicating substantial differences in accumulation rates and historical patterns. The 210Pb-derived mean accumulation rate found in the Strait of Sardinia was 0.05 g.cm-2.y-1, lower than that in Sicily Channel (0.1 g.cm-2.y-1) suggesting an inverse correlation with water depth. Excess 210Pb inventories were 24 ± 1 and 6.0 ± 0.4 kBq.m-2, while the fluxes to the sediment were 745 ± 31 and 188 ± 11 Bq.m-2.y-1 in Sicily and Sardinia channels, respectively. 137Cs failed to use for the validation of the established chronologies, while its inventories found 450 Bq.m-2 and 355 Bq.m-2 in the Sicily and Sardinia channel, respectively.

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Section: Introductionmentioning

confidence: 99%

Evaluating the historical sedimentation patterns in two different Mediterranean deep environments (Sardinia and Sicily Channels)

et al. 2019

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“…Along the north coast of Algeria this current is of order 30–50 km wide and 200–400 m deep (near slope) with speeds of order 30–80 cm s −1 in the surface 100 m (Testor et al, ). As a result of barotropic and baroclinic instabilities meanders regularly form in this current (El‐Geziry & Bryden, ), which then typically spin off eddies of ~30 km diameter that circulate the Algerian Basin, following a cyclonic pathway (Cotroneo et al, ; Escudier et al, ; Testor et al, ). These contribute to an active mesoscale field in the central basin, which constitutes the second regime.…”

Section: Introductionmentioning

confidence: 99%

Sentinel‐3A Views Ocean Variability More Accurately at Finer Resolution

Heslop

Román

Pascual

et al. 2017

Geophysical Research Letters

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This is the first multiplatform evaluation involving data from the new Sentinel-3A altimeter. An experiment was undertaken in the Algerian Basin, employing an ocean glider and a ship mission, along the same track and synchronous with an overpass of the Sentinel-3A mission. This provided three independent views of the ocean velocity field, along a section that encompassed three different oceanographic regimes. The results demonstrate the capacity of Sentinel-3A to retrieve fine-scale oceanographic features (~20 km). The intercomparison with in situ platforms showed a significant improvement, order 30% in resolution and 42% in velocity accuracy using a synthetic aperture radar mode with respect to lower-resolution mode of conventional altimetry. In addition, the three-platform view provided valuable insight into the variability of evolving oceanographic features, in an area of the Mediterranean that remains chronically under sampled.

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“… (a) Map and bathymetry of the western Pontine Islands (PO: Ponza, GA: Gavi, PA: Palmarola, ZA: Zannone). (b) Geographic location of the western Pontine Islands with the direction of the main marine currents in the Tyrrhenian Sea according to El-Geziry and Bryden 77 . (c) Statistical parsimony networks of the mtDNA ( cytb + nd4 ) and nuDNA ( mc1r and β -fibint7 ) fragments.…”

Section: Resultsmentioning

confidence: 99%

Spotlight on islands: on the origin and diversification of a new lineage of the Italian wall lizardPodarcis siculusin the western Pontine Islands

Senczuk

Havenstein

Milana

et al. 2018

Preprint

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Groups of proximate continental islands may conceal more tangled phylogeographic patterns than oceanic archipelagos as a consequence of repeated sea level changes, which allow populations to experience gene flow during periods of low sea level stands and isolation by vicariant mechanisms during periods of high sea level stands. Here, we describe for the first time an ancient and diverging lineage of the Italian wall lizard Podarcis siculus from the western Pontine Islands. We used nuclear and mitochondrial DNA sequences of 156 individuals with the aim of unraveling their phylogenetic position, while microsatellite loci were used to compare several a priori insular biogeographic models of migration with empirical data. Our results suggest that the western Pontine populations colonized the islands early during their Pliocene volcanic formation, while populations from the eastern Pontine Islands seem to have been introduced recently. The inter-island genetic makeup indicates an important role of historical migration, probably due to glacial land bridges connecting islands followed by a recent vicariant mechanism of isolation. Moreover, the most supported migration model predicted higher gene flow among islands sharing a longitudinal arrangement. Considering the threatened status of small insular endemic populations, we suggest this new evolutionarily independent unit be given priority in conservation efforts.

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The circulation pattern in the Mediterranean Sea: issues for modeller consideration

Cited by 70 publications

References 37 publications

Evaluating the historical sedimentation patterns in two different Mediterranean deep environments (Sardinia and Sicily Channels)

Evaluating the historical sedimentation patterns in two different Mediterranean deep environments (Sardinia and Sicily Channels)

Sentinel‐3A Views Ocean Variability More Accurately at Finer Resolution

Spotlight on islands: on the origin and diversification of a new lineage of the Italian wall lizardPodarcis siculusin the western Pontine Islands

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