Modelling the barotropic tide along the West-Iberian margin

Quaresma, L.; Pichon, Annick

doi:10.1016/j.jmarsys.2011.09.016

Cited by 41 publications

(23 citation statements)

References 28 publications

(40 reference statements)

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“…QUARESMA and PICHON (2013) have shown that this similar behavior for harmonics in the same tide spectrum band is associated with the inertial period (~34.3h for the study area).…”

Section: Semi-diurnal Tidal Componentssupporting

confidence: 60%

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Tide assessment for the continental shelf situated in the southwestern Atlantic between the latitudes 19.8ºS and 21.2ºS

et al. 2016

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The astronomical tide was numerically simulated by the MOHID model for the South-Central Region of Espírito Santo State (Brazil), between latitudes 19.8ºS and 21.2ºS. The grid nesting technique was used to transpose the boundary conditions from the larger domain to a more refined local domain (spatial resolution around 450 m), with tidal harmonics provided by the TPXO tide inverse model as boundary conditions for the larger domain. Results from the numerical model were compared with both the pre-existing tide harmonics and the harmonics calculated from measured data. From the maps of phase, amplitude, tidal ellipses and residual currents the main tidal kinematic characteristics in the study area were described. On the continental shelf, the results showed that the physiography and bathymetry of the region play an important role in the distribution of tidal co-phases, co-amplitudes, ellipses and residual currents. The MOHID model was able to reproduce satisfactorily the astronomical tide and thus can be used to study the behaviour of the tidal propagation in continental shelf areas.

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“…QUARESMA and PICHON (2013) have shown that this similar behavior for harmonics in the same tide spectrum band is associated with the inertial period (~34.3h for the study area).…”

Section: Semi-diurnal Tidal Componentssupporting

confidence: 60%

“…This phenomenon is most likely related to the amplification caused by the continental shelf's length -of approximately 65 km -to the south of this region; indeed, as shown by BATTISTI and CLARKE (1982), QUARESMA and PICHON (2013), the length of the continental shelf determines the tide amplification.…”

Section: Semi-diurnal Tidal Componentsmentioning

confidence: 88%

Tide assessment for the continental shelf situated in the southwestern Atlantic between the latitudes 19.8ºS and 21.2ºS

et al. 2016

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“…Estremadura Spur shelf-break is also a region where these velocities are higher. Quaresma and Pichon (2013) obtained values for barotropic forcing term of approximately three to four times higher than the ones observed on the rest of the continental shelf.…”

Section: Tidesmentioning

confidence: 56%

“…According to Quaresma and Pichon (2013), current velocities associated to barotropic tides in Estremadura Spur are completely different from any other Portuguese shelf region. We can estimate a value of M2 + K1 tide that will give a limit of tidal stream based on a model validated with in situ data.…”

Section: Tidesmentioning

confidence: 94%

Sediment transport patterns on the Estremadura Spur continental shelf: Insights from grain-size trend analysis

Balsinha¹,

Fernandes²,

Oliveira³

et al. 2014

Journal of Sea Research

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“…This is caused by the tendency of the Canyon to increase the ageostrophy of along‐Strait tidal currents, evidenced by the appearance of an across‐isobath velocity component. This effect of ageostrophy on tidal current ellipses has been reported by Quaresma and Pichon [] for different locations in the Iberian shelf. Second, within Algeciras Bay the tidal currents tend to follow the isobath contours, shown by the orientation of the semimajor axes parallel to the coastline.…”

Section: Vertical Structure Of M2 Currents In Algeciras Baymentioning

confidence: 99%

Baroclinic M₂ tidal circulation in Algeciras Bay and its implications for the water exchange with the Strait of Gibraltar: Observational and 3-D model results

González

Álvarez

Mañanes

et al. 2013

J. Geophys. Res. Oceans

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[1] The M 2 tidal circulation in Algeciras Bay (Strait of Gibraltar) is analyzed using a 3-D, nonlinear, baroclinic, hydrodynamic model, in conjunction with observed data series. Results show the influence of the density stratification on the vertical structure of the M 2 currents in Algeciras Bay, although its tidal dynamics shows major differences with respect to the Strait of Gibraltar. Whereas the M 2 currents in the Strait present mainly barotropic behavior, the baroclinic effects prevail in Algeciras Bay. A notable finding is the presence of a tidal M 2 counter-current system between the upper Atlantic and the lower Mediterranean water layers within the Bay, with amplitudes of up to 25 cm s À1 . The interface between the two layers oscillates in antiphase relation with respect to the freesurface elevation, with amplitudes of almost 20 m. The presence of the submarine Algeciras Canyon was found to be determinant in the three-dimensional structure of tidal currents within the Bay, strengthening the baroclinic tidal regime of currents. This situation has quantitative consequences for the flow-exchange processes between Algeciras Bay and the outer Strait, with rates 20 times higher than those obtained when considering only the barotropic behavior, as well as inflow/outflow lateral recirculation volumes during half a tidal cycle that account for more than 20% of the net accumulated volume. This flowexchange system was found to be affected by the nonlinear interaction processes between the first baroclinic period of resonance of Algeciras Bay and the M 2 tide.

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Modelling the barotropic tide along the West-Iberian margin

Cited by 41 publications

References 28 publications

Tide assessment for the continental shelf situated in the southwestern Atlantic between the latitudes 19.8ºS and 21.2ºS

Tide assessment for the continental shelf situated in the southwestern Atlantic between the latitudes 19.8ºS and 21.2ºS

Sediment transport patterns on the Estremadura Spur continental shelf: Insights from grain-size trend analysis

Baroclinic M₂ tidal circulation in Algeciras Bay and its implications for the water exchange with the Strait of Gibraltar: Observational and 3-D model results

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Modelling the barotropic tide along the West-Iberian margin

Cited by 41 publications

References 28 publications

Tide assessment for the continental shelf situated in the southwestern Atlantic between the latitudes 19.8ºS and 21.2ºS

Tide assessment for the continental shelf situated in the southwestern Atlantic between the latitudes 19.8ºS and 21.2ºS

Sediment transport patterns on the Estremadura Spur continental shelf: Insights from grain-size trend analysis

Baroclinic M2 tidal circulation in Algeciras Bay and its implications for the water exchange with the Strait of Gibraltar: Observational and 3-D model results

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Product

Resources

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Baroclinic M₂ tidal circulation in Algeciras Bay and its implications for the water exchange with the Strait of Gibraltar: Observational and 3-D model results