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Variabilidad temporal de la corriente circumpolar antártica observada desde la altimetría satelital
Science (New York, N.Y.)
|October 19, 1984
Resumen
Los datos de altimetría por satélite revelaron un aumento de la velocidad de la corriente circumpolar antártica. Este estudio destaca la capacidad de las mediciones satelitales del nivel del mar para monitorear la variabilidad de las corrientes oceánicas.
Área de la Ciencia:
- Oceanografía La oceanografía es la oceanografía.
- La geofísica es la geofísica.
- La detección remota con sensores.
Sus antecedentes:
- La Corriente Circumpolar Antártica (ACC) es un componente crítico de la circulación oceánica global.
- Comprender su variabilidad temporal es esencial para los estudios climáticos.
- Los métodos de monitoreo anteriores tenían limitaciones en la cobertura espacial y temporal.
Objetivo del estudio:
- Para investigar la variabilidad temporal de la Corriente Circumpolar Antártica utilizando datos de altimetría por satélite.
- Para evaluar la dinámica a gran escala del ACC durante un período específico.
Principales métodos:
- Utilizó las mediciones del nivel del mar del altímetro del satélite Seasat.
- Se analizaron datos recopilados entre julio y octubre de 1978.
- Examinó las diferencias del nivel del mar entre corrientes para inferir la velocidad geostrófica.
Principales resultados:
- Se observó una coherencia zonal a gran escala en la diferencia de nivel del mar entre corrientes.
- Indicó un aumento general en la velocidad geostrófica superficial del ACC.
- Se ha demostrado una significativa variabilidad temporal en el flujo de la corriente.
Conclusiones:
- La altimetría por satélite es una poderosa herramienta para monitorear las corrientes oceánicas a gran escala.
- Los hallazgos proporcionan información sobre el comportamiento dinámico del ACC.
- Una mayor aplicación de los datos satelitales puede mejorar nuestra comprensión de la dinámica oceánica.
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