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Marte: capa de hielo de verano del norte - observaciones de vapor de agua de Viking 2
Science (New York, N.Y.)
|December 11, 1976
Resumen
El vapor de agua en Marte alcanza sus máximos en el verano del norte. Las capas de hielo polares son principalmente hielo de agua, no dióxido de carbono, que requieren temperaturas superiores a 200 K.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Ciencias de la atmósfera Ciencias atmosféricas.
- Geología Geología Geología.
Sus antecedentes:
- La distribución del vapor de agua es crucial para comprender la dinámica del clima marciano.
- Los modelos anteriores de los casquetes polares no tenían en cuenta completamente las abundancias de vapor de agua observadas.
Objetivo del estudio:
- Para investigar la dependencia de latitud del vapor de agua en Marte.
- Determinar la composición y las implicaciones de las capas polares de hielo marciano.
Principales métodos:
- Análisis de los datos de vapor de agua del orbitador Viking 2.
- Modelado termodinámico de las condiciones atmosféricas polares.
Principales resultados:
- La abundancia máxima de vapor de agua se observa entre los 70-80 grados de latitud norte durante el verano del norte.
- Las regiones polares requieren temperaturas cercanas a la superficie superiores a 200 K.
- Las condiciones observadas son inconsistentes con una capa de hielo de dióxido de carbono estable.
Conclusiones:
- La capa polar norte residual y las manchas de hielo de latitudes más bajas son predominantemente hielo de agua.
- El espesor estimado de la capa de hielo de agua oscila entre 1 metro y 1 kilómetro.
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