Repositorio Digital Marítimo, Fluvial y Costero

Bayot, Bonny and Cornejo Rodríguez, M. Pilar. (1996). Evidencias de ondas ecuatoriales en Salinas y Galapagos. Acta Oceanográfica del Pacífico, 8 (1). pp. 1-14.

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Abstract

Time series of daily averages of some oceanic-atmospheric variables from SAL (array formed by La Libertad and Salinas stations) and GAL (array formed by tSanta Cruz - San Cristoba - Baltra stations), had been analyzed using Empirical Orthogonal Functions ( EOF) and Spectal Analysis. EOF analysis determined that in noth stations, the first an second modes explained the great variability. In SAL they represented 39.7% and 23.8%, and in GAL 56.6% and 20.5%, respectively of the total variation of the series. The presence of the annual cycle in the fist mode, reveals the existence of this periodicity in all the series, although in some of them, it was not evident in a first visual-graphic analysis. The second mode represented the relation between the sea level and winds, reflecting that some of the oscillations were forced atmospherically and surely related to changes in local or remote trades winds. Also, the Spectral Analyses of the time series and the first ansd second modes of SAL and GAL, showed the presence of different oscillations with periods lesser than annuals. These were coincided with that of the equatorial waves (Kelvin and Rossby-gravity), some periodicities and some atmospheric oscillations. Finally the cross spectra analysis between atmospheric and oceanic variables suggested in some cases, a local atmospheric forcing.

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Item Type:	Article
Uncontrolled Keywords:	Temperatura del agua. Nivel del mar. Presión atmosférica. Viento
Geographical coverage :	Ecuador. Pacífico. Salinas. La Libertad
Depositing User:	Alianza Regional del Sistema Mundial de Observación de los Océanos (GOOS) para el Pacífico Sudeste - GRASP
ISSN:	1390-0226
Official URL:	https://www.inocar.mil.ec/web/index.php/publicacio...

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