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Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
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Published on: June 13, 2020

La teledetección de las corrientes oceánicas.

R M Goldstein, H A Zebker, T P Barnett

    Science (New York, N.Y.)
    |December 8, 1989
    PubMed
    Resumen

    Un nuevo método de radar de apertura sintética (SAR) mide con precisión las corrientes superficiales del océano. Esta técnica de teledetección muestra el potencial para el monitoreo de corrientes oceánicas globales.

    Área de la Ciencia:

    • Oceanografía La oceanografía es la oceanografía.
    • La detección remota con sensores.
    • La geofísica es la geofísica.

    Sus antecedentes:

    • La medición precisa de las corrientes oceánicas es crucial para comprender la dinámica del océano y el clima.
    • Los métodos convencionales para medir las corrientes superficiales pueden requerir mucha mano de obra y proporcionar una cobertura espacial limitada.

    Objetivo del estudio:

    • Introducir y validar una nueva técnica de teledetección para medir las corrientes oceánicas cercanas a la superficie utilizando un radar de apertura sintética (SAR).

    Principales métodos:

    • Utilizó un solo transmisor SAR y dos antenas receptoras para capturar escenas de imágenes SAR interferométricas.
    • Analizó la diferencia de fase entre las escenas SAR para generar un interferograma directamente proporcional a la velocidad de la corriente superficial.

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    Principales resultados:

    • Las pruebas de campo demostraron la precisión de la técnica SAR, con errores de raíz media cuadrada de 5-10 cm / s para flujos medios de 27-56 cm / s (aproximadamente un 20% de precisión).

    Conclusiones:

    • El método de interferometría SAR desarrollado ofrece un enfoque prometedor, preciso y remoto para medir las corrientes superficiales oceánicas.
    • Con el potencial para la implementación basada en el espacio, esta técnica podría permitir el monitoreo global de rutina de las corrientes superficiales oceánicas.