Numerical simulation in oceanography. applications to the Alboran Sea and the Strait of Gibraltar

2004 ◽  
pp. 75-98
Author(s):  
J. Macías ◽  
C. Parés ◽  
M. J. Castro
Keyword(s):  
Numerical Simulation ◽  
Alboran Sea ◽  
Strait Of Gibraltar ◽  
Alborán Sea

scholarly journals The Mediterranean outflow in the Strait of Gibraltar and its connection with upstream conditions in the Alborán Sea

Ocean Science ◽  
2017 ◽  
Vol 13 (2) ◽  
pp. 195-207 ◽  
Author(s):  
Jesús García-Lafuente ◽  
Cristina Naranjo ◽  
Simone Sammartino ◽  
José C. Sánchez-Garrido ◽  
Javier Delgado
Keyword(s):  
Potential Temperature ◽  
Western Mediterranean ◽  
Altimetry Data ◽  
Alboran Sea ◽  
Strait Of Gibraltar ◽  
Mediterranean Outflow ◽  
Alboran Basin ◽  
In Situ Observations ◽  
Alborán Sea

Abstract. The present study addresses the hypothesis that the Western Alborán Gyre in the Alborán Sea (the westernmost Mediterranean basin adjacent to the Strait of Gibraltar) influences the composition of the outflow through the Strait of Gibraltar. The process invoked is that strong and well-developed gyres help to evacuate the Western Mediterranean Deep Water from the Alborán basin, thus increasing its presence in the outflow, whereas weak gyres facilitate the outflow of Levantine and other intermediate waters. To this aim, in situ observations collected at the Camarinal (the main) and Espartel (the westernmost) sills of the strait have been analysed along with altimetry data, which were employed to obtain a proxy of the strength of the gyre. An encouraging correlation of the expected sign was observed between the time series of potential temperature at the Espartel Sill, which is shown to keep information on the outflow composition, and the proxy of the Western Alborán Gyre, suggesting the correctness of the hypothesis, although the weakness of the involved signals does not allow for drawing definitive conclusions.

scholarly journals The Mediterranean Outflow in the Strait of Gibraltar and its connection with upstream conditions in the Alborán Sea

2016 ◽  
Author(s):  
Jesús García-Lafuente ◽  
Cristina Naranjo ◽  
Simone Sammartino ◽  
José C. Sánchez-Garrido ◽  
Javier Delgado
Keyword(s):  
Potential Temperature ◽  
Western Mediterranean ◽  
Altimetry Data ◽  
Alboran Sea ◽  
Strait Of Gibraltar ◽  
Mediterranean Outflow ◽  
Alboran Basin ◽  
In Situ Observations ◽  
Alborán Sea

Abstract. The present study addresses the hypothesis that the Western Alborán Gyre in the Alborán Sea (the westernmost Mediterranean basin adjacent to the Strait of Gibraltar) influences the composition of the outflow through the Strait of Gibraltar. The process invoked is that strong and well-developed gyres help to evacuate the Western Mediterranean Deep Water from the Alborán basin, thus increasing its presence in the outflow, whereas weak gyres facilitates the outflow of Levantine and other Intermediate waters. To this aim, in situ observations collected at Camarinal (the main) and Espartel (the westernmost) sills of the Strait have been analysed along with altimetry data, which were employed to obtain a proxy of the strength of the gyre. An encouraging correlation of the expected sign was observed between the time series of potential temperature at Espartel sill, which is shown to keep information on the outflow composition, and the proxy of the Western Alborán Gyre, suggesting the correctness of the hypothesis, although the weakness of the involved signals does not allow for drawing definitive conclusions.

scholarly journals The Atlantic–Mediterranean ecological connection: a study on decapod larval communities

2018 ◽  
Author(s):  
RITA F.T. PIRES ◽  
MARIA PAN ◽  
IGNÁCIO A. CATALÁN ◽  
LAURA PRIETO ◽  
MIGUEL P. P. SANTOS ◽  
...  
Keyword(s):  
Life Cycles ◽  
Transport Processes ◽  
Ecological Modelling ◽  
Alboran Sea ◽  
Strait Of Gibraltar ◽  
Nearshore Processes ◽  
Hydrological Conditions ◽  
Large Marine Ecosystems ◽  
Modelling Studies ◽  
Alborán Sea

Larval dispersal mechanisms, although significantly studied, are far from being completely resolved. Local studies are needed to clarify key interactions between individual life cycles and transport processes. The Atlantic-Mediterranean connection through the Strait of Gibraltar is a particularly important area to explore these processes, as a hotspot for detecting species fluxes and/or invasions between several Large Marine Ecosystems. However, the area dynamics and the mechanisms used by larvae to cope with the system hydrological conditions are scantly explored.Summer data on decapod larvae and ocean water masses from an extended area of the southern Portugal, Gulf of Cadiz, Strait of Gibraltar and Alboran Sea were analyzed, and the larval assemblages and their potential retention/dispersal mechanisms were explored. Different larval assemblages were linked to the hydrological conditions of each basin. Shelf width differences and its influence in along/cross-shore transport were the main drivers of decapod distribution, acting as biological barriers. Larvae of mesopelagic species dominated the northern Alboran Sea innershelf, highly influenced by offshore currents. Here, nearshore processes were limited to surface waters, while in the Gulf they extended more deeply and to the outer shelf. Results on species ecological traits can easily be applied to oceanographically similar areas of world coastal regions and could be used for further development of ecological modelling studies.

Biological and geochemical signatures associated with the water circulation through the Strait of Gibraltar and in the western Alboran Sea

1991 ◽  
Vol 96 (C5) ◽  
pp. 8755 ◽  
Author(s):  
Hans Joachim Minas ◽  
Bernard Coste ◽  
Pierre Le Corre ◽  
Monique Minas ◽  
Patrick Raimbault
Keyword(s):  
Water Circulation ◽  
Alboran Sea ◽  
Strait Of Gibraltar ◽  
Alborán Sea

The genus Sveltia (Gastropoda, Cancellariidae) in the Atlantic Pliocene of Iberia with a new species from the Cenozoic Mondego Basin of Portugal

2021 ◽  
pp. 1-9
Author(s):  
Bernard M. Landau ◽  
Carlos Marques da Silva
Keyword(s):  
New Species ◽  
West African ◽  
Sea Surface ◽  
Alboran Sea ◽  
North African ◽  
Mediterranean Species ◽  
Strait Of Gibraltar ◽  
A New Species ◽  
Alborán Sea ◽  
Northeastern Atlantic

Abstract The cancellarid genus Sveltia Jousseaume, 1887, is widespread in western European and North African Neogene marine fossil assemblages. In Pliocene deposits it is commonly represented by Sveltia varicosa (Brocchi, 1814), which until recently was considered a widely distributed taxon in the Mediterranean Sea and adjacent Atlantic faunas. A recent review of the species from the Pliocene of Italy and Spain (Guadalquivir Basin), leading to the erection of S. confusa, prompted the reassessment of the Sveltia material from the Atlantic Pliocene of the Portuguese Mondego Basin and the subsequent description of Sveltia sofiae n. sp. Consequently, a mosaic of species has emerged from what was previously viewed as the broad Atlanto-Mediterranean range of the widespread and quite variable S. varicosa. From a biogeographic standpoint, it is now clear that S. varicosa was a Mediterranean species, occurring east of the Alboran Sea. Sveltia confusa had a mainly Atlantic distribution, from the French Pliocene Ligerian Gulf to the Gulf of Cadiz, at least, and straddling the Strait of Gibraltar into the Alboran Sea. Sveltia sofiae n. sp. was endemic to western Iberia, represented today only in the western Portuguese Mondego Basin. Sveltia is a thermophilic genus. Since early Pliocene times, because of northeastern Atlantic sea surface temperature decline, it underwent a southward range contraction, occurring today—in the eastern Atlantic—from Cape Blanc, Mauritania, south. This range reduction was coupled with the post mid-Piacenzian southward contraction of the Pliocene Mediterranean-West African tropical molluscan province and the consequent rise of the present-day Mediterranean-Moroccan subtropical province. UUID: http://zoobank.org/0cf3c73a-8d57-472e-87e4-f1ad065e5fb6.

Sign in / Sign up

Export Citation Format

Share Document