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Open Access item Tidal corrections of the ERS-1 satellite altimeter data in the Mediterranean sea
Spatalas, S. D.
Tziavos, I. N.
Sevilla, Miguel J.
Toro y Llaca, Carmen de
|Keywords:||Geodesia por satélite, Geomed, Mareas, Altimetría, Mediterráneo|
|Publisher:||University of Thessaloniki|
|Citation:||En: Mare Nostrum: geomed report 4. Thessaloniki : University of Thessaloniki, 1994, pp. 149-170.|
|Series/Report no.:||Geomed report|
|Abstract:||Two tidal models for the Mediterranean Sea are recently available. From
these models tidal heights have been computed and used to correct the altimeter
data of the first 10 ERM's of ERS-I. Comparisons of the statistics of the
differences between ERS-I and OSU9I before and after the tida! correction do not
present a significant improvement. In terms of the standard deviation (sd) of the
aforementioned differences a small de crease is observed for most of the ERM's,
but there are also cases in which the sd increases. Significant information was
obtained by analyzing the power spectrum at main tidal frequencies during the
stacking procedure of the a!timeter data. Another test carried out in our study was
the comparison of the results of the crossover analysis of the ERS-I data in the
Mediterranean before and after the tida! correction. The very small decrease (at
the order of several mm) of the rms of the crossover differences after the tidal
correction could be inperpreted either as ineffectiveness of the model or as an
indication that the tidal signal in the Mediterranean is weak enough and for this
reason could be ignored in severa! applications.|
|Appears in Collections:||(IAG) Libros y partes de libros|
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