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Regional Ocean Tide Loading Modelling Around The Iberian Peninsula

Benavent Merchán, María Teresa and Montesinos, F.G. and Arnoso, J. (2009) Regional Ocean Tide Loading Modelling Around The Iberian Peninsula. Journal of Geodynamics, 48 (3-mayo). pp. 132-137. ISSN 0264-3707

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Abstract

Wedeveloped a new 1/12◦ resolution oceanic tide model in the complex region that surrounds the Iberian
Peninsula. The model, named IBER01, allows us to obtain more accurate tidal loading computations
for precise geodetic and gravimetric observations in this area. The modelling follows the scheme of
data assimilation (coastal tide gauge, bottom pressure sensors and TOPEX/Poseidon altimetry) into a
hydrodynamical model, which is based on two-dimensional barotropic depth averaged shallow-water
equations. Detailed bathymetry data and quadratic bottom friction with a specific drag coefficient for the
region have been considered. Improved ocean load maps for the Iberian Peninsula are obtained for eight
harmonic constituents (Q1, P1, O1, K1, N2, M2, S2 and K2), after computing the load effect (Newtonian
attraction and elastic contribution) using IBER01 and six present-day global oceanic tide models for
comparison. The results achieved verify the quality of the new model. Our ocean loading computations
reduce considerably the discrepancies between the theoretical Earth tide parameters and those from
observations at the level of 0.3%.

Item Type:Article
Additional Information:16th International Symposium on Earth Tides, Sep 01-05, 2008, Jena, Germany
Uncontrolled Keywords:Oceanic model; Tidal loading; Iberian Peninsula; Earth tide; Internal Tide; Earth Tides; Gravity; Program; Vav; Geochemistry & Geophysics
Subjects:Sciences > Mathematics > Geodesy
ID Code:14798
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