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Espectro de energía cinética de remolinos de baja frecuencia en las profundidades del Pacífico norte occidental
Resumen
La energía cinética de remolinos de baja frecuencia en el Pacífico Norte occidental exhibe distintas escalas anuales, mesoscalas temporales y mensuales. La mesoscala temporal, caracterizada por la dominación meridional, contiene la mayor parte de esta energía.
Área de la Ciencia:
- Oceanografía La oceanografía es la oceanografía.
- Dinámica de fluidos La dinámica de fluidos.
- La geofísica es la geofísica.
Sus antecedentes:
- Los remolinos oceánicos son cruciales para el transporte de energía e impulso.
- Comprender el espectro de frecuencias de la energía cinética de los remolinos es vital para el modelado climático.
- Los datos actuales de aguas profundas proporcionan información sobre la dinámica oceánica a gran escala.
Objetivo del estudio:
- Para estimar el espectro de frecuencias de la energía cinética de los remolinos de baja frecuencia.
- Para caracterizar las escalas temporales y espaciales de los remolinos oceánicos en el Pacífico Norte occidental.
- Para determinar la distribución de la energía a través de diferentes escalas de remolinos.
Principales métodos:
- Análisis de un registro de medidor de corriente a largo plazo de una capa profunda.
- Estimación del espectro de frecuencias de la energía cinética de los remolinos.
- Caracterización de la dinámica del campo de remolinos basado en escalas de tiempo y dominación del movimiento.
Principales resultados:
- El campo de los remolinos muestra tres escalas de tiempo dominantes: anual (dominación zonal), mesoscala temporal (dominación meridional) y mensual (isotropía horizontal).
- Aproximadamente dos tercios de la energía cinética total de los remolinos está asociada con la mesoscala temporal.
- La dominación zonal y meridional varía significativamente a través de diferentes escalas temporales.
Conclusiones:
- La mesoscala temporal es el componente más energético de la energía cinética del remolino de baja frecuencia en la región de estudio.
- Los remolinos oceánicos en el oeste del Pacífico Norte exhiben dinámicas complejas a múltiples escalas.
- Estos hallazgos contribuyen a una mejor comprensión de los presupuestos de energía oceánica y los patrones de circulación.
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