Heat flow in the Alboran Sea, western Mediterranean

Polyak, B. G.; Fernández, Manel; Khutorskoy, M. D.; Soto, Juan I.; Basov, Ivan A; Comas, M. C.; Khain, V. E.; Alonso, Belén; Agapova, G. V.; Mazurova, I.S.; Negredo, Ana M.; Tochitsky, V.O.; Linde, Javier; Богданов, Н. А.; Banda, E.

doi:10.1016/0040-1951(95)00178-6

Cited by 82 publications

(55 citation statements)

References 26 publications

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“…The basic circulation in the Strait of Gibraltar consists of an upper layer of cold, fresh surface Atlantic water and an opposite deep current of warmer, salty Mediterranean outflowing water, compare Almazán et al (1988); González & Sánchez-Arcilla (1995). The sea-surface temperatures in the Strait of Gibraltar are maxima in summer (August-September) with average values of 23-24 • C and minima in winter (January-February) with averages of 11-12 • C. The north Atlantic water is about 5-6 • C colder than the Mediterranean water, elaborate details are available in Millán et al (1995); Polyak et al (1996).…”

Section: Free-surface Temperature In the Strait Of Gibraltarmentioning

confidence: 99%

“…For a discussion on the thermal effects on hydraulic flows reference is made to Chelton et al (2001);Millán et al (1995); Polyak et al (1996); Samelson et al (2006); Vargas et al (1999) and further references can be found therein. The basic circulation in the Strait of Gibraltar consists of an upper layer of cold, fresh surface Atlantic water and an opposite deep current of warmer, salty Mediterranean outflowing water, compare Almazán et al (1988); González & Sánchez-Arcilla (1995).…”

Section: Free-surface Temperature In the Strait Of Gibraltarmentioning

confidence: 99%

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Lattice Boltzmann Simulation for Shallow Water Flow Applications

Banda¹,

Seaı̈d²

2012

Hydrodynamics - Theory and Model

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Section: Free-surface Temperature In the Strait Of Gibraltarmentioning

confidence: 99%

Section: Free-surface Temperature In the Strait Of Gibraltarmentioning

confidence: 99%

Lattice Boltzmann Simulation for Shallow Water Flow Applications

Banda¹,

Seaı̈d²

2012

Hydrodynamics - Theory and Model

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“…However, observations reported in [18] indicate that water level in the sea surface is driven by temperature changes, while the deeper layer's salinity also become important. Furthermore, authors in [22] claimed that the sea-surface temperature is considered to play an important role in the Mediterranean circulation through the Strait of Gibraltar. The sea-surface temperatures are maxima in summer (August-September) with average values of 23-24 • C and minima in winter (January-February) with averages of 11-12 • C. The North Atlantic water is about 5-6 • C colder than the Mediterranean water; elaborate details are available in [22,18], among others.…”

Section: Fig 43 Schematic Description Of the Strait Of Gibraltar Amentioning

confidence: 99%

“…Furthermore, authors in [22] claimed that the sea-surface temperature is considered to play an important role in the Mediterranean circulation through the Strait of Gibraltar. The sea-surface temperatures are maxima in summer (August-September) with average values of 23-24 • C and minima in winter (January-February) with averages of 11-12 • C. The North Atlantic water is about 5-6 • C colder than the Mediterranean water; elaborate details are available in [22,18], among others. The purpose of this example is twofold, on one hand to test the capability of the GCA method to handle complex geometry and moving fronts, and, on the other hand, to develop mathematical tools to study convective heat transport in the Strait of Gibraltar.…”

Section: Fig 43 Schematic Description Of the Strait Of Gibraltar Amentioning

confidence: 99%

“…The model is started from warm rest, i.e., T = T C and u = 0. Here, the temperature fields of the Atlantic and Mediterranean waters have been obtained from an average of the spring data [22]. At the left and right boundary regions we use cold temperature T C and hot temperature T H , respectively.…”

Section: Fig 43 Schematic Description Of the Strait Of Gibraltar Amentioning

confidence: 99%

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A Galerkin-Characteristic Method for Large-Eddy Simulation of Turbulent Flow and Heat Transfer

El‐Amrani¹,

Seaı̈d²

2008

SIAM J. Sci. Comput.

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Abstract. This work aims at the development of a nonoscillatory Galerkin-characteristic method for large-eddy simulation of turbulent flow and heat transfer. The method is based on combining the modified method of characteristics with a Galerkin finite element discretization of the incompressible Navier-Stokes/Boussinesq equations in primitive variables. It can be interpreted as a fractional step technique where the convective part and the Stokes/Boussinesq part are treated separately. A limiting procedure is implemented for the reconstruction of numerical solutions at the departure points. The main feature of the proposed Galerkin-characteristic method is that, due to the Lagrangian treatment of convection, the standard Courant-Friedrichs-Levy condition is relaxed, and the time truncation errors are reduced in the Stokes/Boussinesq part. To solve the generalized Stokes/Boussinesq problem we implement a conjugate gradient algorithm. This method avoids projection techniques and does not require any special correction for the pressure. We verify the method for an advection-diffusion equation with a known analytical solution and for the benchmark problem of mixed convection flow in a squared cavity. We also present numerical results for a problem of heat transport in the Strait of Gibraltar. The Galerkin-characteristic method has been found to be feasible and satisfactory.Key words. Galerkin-characteristic method, large-eddy simulation, heat transfer, finite element method, mixed convection, sea-surface temperature AMS subject classifications. 76F35, 74S05, 65M25DOI. 10.1137/080720711 1. Introduction. The large-eddy simulation (LES) equations for incompressible thermal flows are obtained by applying a spatial filtering to the Navier-Stokes equations subject to the Boussinesq approximation; see [5,4,17,23,16,12] and the references therein. However, this procedure introduces a term called a subgrid stress tensor which needs to be modelled. This term has to be seen as the interaction between the large and small scales in the system. In the current study, we will concentrate on a subgrid problem based on the Smagorinsky model [27]. The LES is normally performed on grids that are just fine enough to resolve the large flow scales, and numerical errors on such grids can have large effects on the simulation results. Although in the literature (see [12] and references therein) many numerical schemes have been presented, it is still not clear what the effect of the numerical and modelling errors in...

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Finite‐frequency Rayleigh wave tomography of the western Mediterranean: Mapping its lithospheric structure

Palomeras

Thurner

Levander

et al. 2014

Geochem Geophys Geosyst

105

148

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[1] We present a 3-D shear wave velocity model for the crust and upper mantle of the western Mediterranean from Rayleigh wave tomography. We analyzed the fundamental mode in the 20-167 s period band (6.0-50.0 mHz) from earthquakes recorded by a number of temporary and permanent seismograph arrays. Using the two-plane wave method, we obtained phase velocity dispersion curves that were inverted for an isotropic Vs model that extends from the southern Iberian Massif, across the Gibraltar Arc and the Atlas mountains to the Saharan Craton. The area of the western Mediterranean that we have studied has been the site of complex subduction, slab rollback, and simultaneous compression and extension during African-European convergence since the Oligocene. The shear velocity model shows high velocities beneath the Rif from 65 km depth and beneath the Granada Basin from 70 km depth that extend beneath the Alboran Domain to more than 250 km depth, which we interpret as a near-vertical slab dangling from beneath the western Alboran Sea. The slab appears to be attached to the crust beneath the Rif and possibly beneath the Granada Basin and Sierra Nevada where low shear velocities (3.8 km/s) are mapped to >55 km depth. The attached slab is pulling down the Gibraltar Arc crust, thickening it, and removing the continental margin lithospheric mantle beneath both Iberia and Morocco as it descends into the deeper mantle. Thin lithosphere is indicated by very low upper mantle velocities beneath the Alboran Sea, above and east of the dangling slab and beneath the Cenozoic volcanics.

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Heat flow in the Alboran Sea, western Mediterranean

Cited by 82 publications

References 26 publications

Lattice Boltzmann Simulation for Shallow Water Flow Applications

Lattice Boltzmann Simulation for Shallow Water Flow Applications

A Galerkin-Characteristic Method for Large-Eddy Simulation of Turbulent Flow and Heat Transfer

Finite‐frequency Rayleigh wave tomography of the western Mediterranean: Mapping its lithospheric structure

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