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Magallanes: propiedades eléctricas y físicas de la superficie de Venus
Science (New York, N.Y.)
|April 12, 1991
Resumen
Magallanes fue uno de ellos.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Radar Astronomía y Astronomía por el Radar
- La geofísica es la geofísica.
Sus antecedentes:
- Las propiedades de la superficie de Venus siguen siendo incompletamente comprendidas.
- Los datos de radar proporcionan información sobre la geología y la composición de Venus.
Objetivo del estudio:
- Mapear y analizar la emisividad de la superficie de Venus y sus propiedades de dispersión.
- Para investigar las variaciones en la composición de la superficie y las características físicas.
Principales métodos:
- Utilizó los datos de dispersión de radar de longitud de onda de 12,6 cm de Magallanes (vertical y oblicuo).
- Medición de la emisión térmica de microondas de la superficie de Venus.
- Emisividad generada y mapas de pendiente de la raíz media cuadrada.
Principales resultados:
- Los mapas de emisividad y pendiente muestran diferencias regionales significativas.
- Las emisividades superficiales oscilan entre aproximadamente 0,35 (región Maxwell) y 0,95 (noreste de Gula Mons).
- Las emisiones más bajas se correlacionan con las áreas de gran altitud, lo que sugiere cambios de composición o de fase.
Conclusiones:
- La superficie de Venus exhibe variaciones significativas en la función de dispersión y la emisividad.
- La correlación topográfica-emisividad implica procesos geológicos que influyen en las propiedades de la superficie.
- Se justifica una mayor investigación sobre los cambios de fase o la intemperie química.
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