Variabilidad del nivel del mar a partir de datos del altímetro del satélite ERS-2 al sur del Archipiélago Canario en 1998

En este trabajo se presentan algunos resultados obtenidos del análisis de la variabilidad de la altura de la superficie del mar a partir de las anomalías del nivel del mar proporcionadas por los datos del altímetro a bordo del satélite ERS-2. La finalidad del estudio has sido la determinación de la variación estacional que las estructuras oceanográficas mesoescalares presentan en las proximidades del archipiélago canario durante el año 1998. En esta zona, caracterizada por la generación de remolinos ciclónicos y anticiclónicos al sur de las islas debida a la perturbación que experimenta la corriente de Canarias a su paso por los canales entre las islas, y por los filamentos de agua fría procedente del afloramiento, el altímetro se muestra como una herramienta importante en la detección y posterior análisis de estas estructuras oceanográficas. Los resultados muestran que la variabilidad espacial y temporal del nivel del mar es máxima en el segundo semestre del año, y ésta se centra, fundamentalmente, en una estrecha banda situada al sudoeste del archipiélago. ABSTRACT: Some results obtained from the analysis of the sea surface height variability using sea level anomalies given by ERS-2 altimeter data are shown in this work. The aim of the study is to work out the seasonal variations of the mesoscale oceanographic features that appear in the vicinity of the Canary Archipelago during 1998 year. This area is characterized by cyclonic and anticyclonic eddies southward of the islands, which are generated by the interference suffered by the Canary Current through the canals between the islands, and also owing to cold water filaments coming from the Upwelling. The altimeter demonstrates to be an important tool in the detection and posterior analysis of these features. The results show that the temporal and spatial variability of the sea level is associated, fundamentally, to a narrow band located to the southwest of the archipelago, and which has been clearly seen with greater intensity during the periods of summer and autumn of 1998.

Dynamics of the Gulf of California (GC). A case study of the internal waves using synthetic aperture radar (SAR)

Calificación: Matrícula de Honor

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