Tide assessment for the continental shelf situated in the southwestern Atlantic between the latitudes 19.8[degrees]S and 21.2[degrees]S

The astronomical tide was numerically simulated by the MOHID model for the South-Central Region of Espirito Santo State (Brazil), between latitudes 19.8[degrees]S and 21.2[degrees]S. The grid nesting technique was used to transpose the boundary conditions from the larger domain to a more refined loc...

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Bibliographic Details
Published in:Brazilian journal of oceanography 2016-01, Vol.64 (2)
Main Authors: Chacaltana, Julio Tomas Aquije, de Jesus, Leonardo Carvalho, Barreto, Fernando Tulio Camilo, Innocentini, Valdir
Format: Article
Language:English
Subjects:
Marine
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Summary:The astronomical tide was numerically simulated by the MOHID model for the South-Central Region of Espirito Santo State (Brazil), between latitudes 19.8[degrees]S and 21.2[degrees]S. 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.
ISSN:1982-436X
DOI:10.1590/S1679-87592016097906402