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Updated: Jun 24, 2026
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Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Observaciones infrarrojas del sistema joviano desde el Voyager 2
Science (New York, N.Y.)
|November 23, 1979
Resumen
Los datos infrarrojos de la Voyager 2 revelan diferencias significativas en Júpiter.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Astronomía por infrarrojos Astronomía por infrarrojos
- Física de la atmósfera Física de la atmósfera
Sus antecedentes:
- La Voyager 2 proporcionó nuevos datos espectrales infrarrojos del sistema joviano.
- Estos datos complementan las observaciones de la Voyager 1, mejorando nuestra comprensión de Júpiter y sus lunas.
Objetivo del estudio:
- Para analizar los espectros infrarrojos de la Voyager 2 para investigar la composición atmosférica y la estructura térmica de Júpiter.
- Para determinar las variaciones de temperatura y la inercia térmica de los satélites galileanos.
- Para limitar la profundidad óptica del anillo de Júpiter.
Principales métodos:
- Análisis de los espectros infrarrojos obtenidos por la Voyager 2.
- Creación de mapas de temperatura de brillo global de Júpiter en números de onda específicos (226 y 602 cm-1).
- Medición de las temperaturas superficiales y de la inercia térmica de los satélites galileanos.
Principales resultados:
- La proporción de etano a acetileno en la atmósfera de Júpiter es mayor en las regiones polares y en el hemisferio norte.
- Esta proporción aumentó en un factor de 1,7 entre los encuentros de Voyager 1 y 2.
- Los mapas térmicos de Júpiter muestran una estructura significativa y una variabilidad temporal, lo que sugiere procesos dinámicos.
- Las temperaturas del satélite Galileo oscilan entre 80 K y 155 K.
- Se determinaron los límites superiores para la profundidad óptica del anillo de Júpiter.
Conclusiones:
- Se confirma la asimetría hemisférica y las variaciones latitudinales en la composición atmosférica de Júpiter.
- Los procesos dinámicos de calentamiento y enfriamiento son cruciales para la estructura térmica de Júpiter cerca de la tropopausa.
- Los satélites galileanos exhiben propiedades térmicas distintas, y Calisto tiene una mayor inercia térmica que la luna de la Tierra.
- El anillo joviano tiene una profundidad óptica muy baja.
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