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Evolution of Staircase Structures in Diffusive Convection
Published on: September 5, 2018
La marea y las olas oceánicas debajo de la plataforma de hielo de Ross, la Antártida
Resumen
El sur del Mar de Ross experimenta principalmente mareas oceánicas diurnas, con rangos significativamente influenciados por la profundidad del agua. Las amplitudes diurnas de las mareas se amplifican, lo que sugiere un efecto de resonancia dentro de la cuenca del Mar de Ross.
Área de la Ciencia:
- Oceanografía La oceanografía es la oceanografía.
- La dinámica de las mareas.
- Propagación de ondas de propagación de ondas.
Sus antecedentes:
- Las características de las mareas del sur del Mar de Ross no se comprenden completamente.
- La interacción del oleaje oceánico con las regiones cubiertas de hielo presenta desafíos únicos.
Objetivo del estudio:
- Para caracterizar las mareas diurnas y semidiurnas del océano en el sur del Mar de Ross.
- Para investigar la amplificación de los constituyentes de las mareas diurnas.
- Para analizar la propagación y las características de las olas de oleaje oceánico en la región.
Principales métodos:
- Desarrollo de cartas de cotida y coamplitud para los constituyentes diurnos K(1) y O(1).
- Creación de un mapa cotidal provisional para el componente semidiurno M(2).
- Aplicación de la teoría de ondas flexurales para predecir las velocidades de las ondas.
Principales resultados:
- La marea oceánica en el sur del Mar de Ross es predominantemente diurna, con rangos de mareas tropicales de 1 a 2 metros.
- Los rangos de mareas tropicales son más de tres veces más grandes que los rangos de mareas ecuatoriales.
- Las amplitudes constituyentes de las mareas diurnas son mayores en el Mar de Ross que en el Pacífico adyacente, lo que indica una resonancia diurna.
- Las olas de oleaje oceánico con amplitudes de 1 cm y períodos de 1-15 minutos se propagan en el área cubierta de hielo.
- La teoría de ondas flexurales predice con precisión la velocidad de estas ondas de oleaje.
Conclusiones:
- El sur del Mar de Ross exhibe mareas diurnas amplificadas debido a la resonancia vinculada a su batimetría y forma.
- El oleaje oceánico puede penetrar en la región cubierta de hielo, y su propagación se rige por la dinámica de las ondas flexurales.
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