Comparison of recent ocean tide models using ground‐based tidal gravity measurements

Melchior, P.; Francis, Olivier

doi:10.1080/01490419609388087

Cited by 31 publications

(17 citation statements)

References 18 publications

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“…Many coastal areas are too small to be included and seas such as the Baltic, the Mediterranean or the Sea of Japan do not appear on the global maps either. More recent oceanic models based on TOPEX/POSEIDON satellite altimetry data, e.g., CSR3 (Eanes and Bettadpur, 1996), FES95 (Le Provost et al, 1988) and ORI96 (Melchior and Francis, 1986), match the gravity tide measurements better than SCHW80 (Baker and Bos, 2003). Therefore, in addition to the SCHW80 model, we have also considered the FES 95 model in our study to test the departures between them.…”

Section: Gravity Tide Residualsmentioning

confidence: 99%

On the interpretation of gravity tide residuals in the Iberian Peninsula

Fernández¹,

Fernández

Miguelsanz³

et al. 2008

Journal of Geodynamics

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Abstract.The interpretation of tidal gravity final residuals is an issue of high debate in geodesy. Whereas some authors suggest that final residuals are related to possible instrumental and measurement errors or to errors in the evaluation of the oceanic load computations, others propose certain empirical relationships between the gravity tidal residuals and the heat flow or the tectonothermal age of the lithosphere which, in turn, reveal structural variations with respect to a homogeneous elastic model.We examine such relationships in the Iberian Peninsula by studying correlations between the cosine component of the final residual vector for the M 2 and O 1 waves of the gravity tide potential and different structural parameters for a total of 21 gravity tide stations. The selected parameters, which are related to the capability of the lithosphere to deform, include surface heat flow as the main parameter and, to a lesser extend, lithospheric strength, Moho temperature and tectonothermal age of the lithosphere. Our study agrees with previous results by other authors and does not demonstrate the existence of empirical relationships between the gravity residuals and structural parameters. Actually, when we consider the most precise observations and recent ocean tide models the final residuals are mostly uncorrelated noise. Our results also agree with theoretical studies proposing that the distortions of the tidal gravity field from spherical symmetry are very small and hardly to observe.

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Section: Gravity Tide Residualsmentioning

confidence: 99%

On the interpretation of gravity tide residuals in the Iberian Peninsula

Fernández¹,

Fernández

Miguelsanz³

et al. 2008

Journal of Geodynamics

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“…Jentzsch et al, 2000). In addition, it reproduces fairly the position of the amphidromic points in the oceans and the behavior of the cotidal lines by inverse techniques (Melchior and Francis, 1996). Earlier, such studies could be done mainly regionally rather than globally.…”

Section: Recent Ocean Tide Models-accuracy Assessment By Land-based Tmentioning

confidence: 97%

Accuracy assessment of ocean tide loading computations for precise geodetic observations

Zahran

Jentzsch

Seeber

2006

Journal of Geodynamics

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“…It was demonstrated that the gravity observations on the Earth's surface are influenced by ocean loading which can contribute to 10% of the total signal (Melchior and Francis, 1996). So, the gravity tidal data can be used as an important source to study the characteristics of the Earth's deformation.…”

Section: Reduction Of the Oceanic Loading Signalsmentioning

confidence: 99%