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La erosión por impacto de la atmósfera primordial de Marte
1Lunar and Planetary Laboratory, University of Arizona, Tucson 85721, USA.
Nature
|April 6, 1989
Resumen
Los impactos pueden haber causado la pérdida temprana de la atmósfera en Marte, permitiendo que el agua líquida fluya. Esto sugiere que Marte es Marte.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Geología Geología Geología.
- Ciencias de la atmósfera Ciencias atmosféricas.
Sus antecedentes:
- La evidencia geomórfica indica procesos fluviales pasados en Marte.
- Las teorías anteriores sobre la pérdida atmosférica de Marte carecen de aceptación general.
Objetivo del estudio:
- Para investigar la erosión atmosférica por impactos como un mecanismo para la pérdida temprana de la atmósfera de Marte.
- Para estimar la presión atmosférica primordial de Marte.
Principales métodos:
- Análisis de los procesos de erosión por impacto.
- Modelado de la dinámica temprana de la atmósfera de Marte.
Principales resultados:
- Los impactos podrían explicar un episodio temprano de pérdida de atmósfera en Marte.
- La presión atmosférica primordial en Marte fue probablemente alrededor de 1 bar.
- Las tasas de impacto actuales son insuficientes para erosionar significativamente la atmósfera marciana actual.
Conclusiones:
- La erosión atmosférica impulsada por el impacto es un mecanismo plausible para la pérdida temprana de la atmósfera de Marte.
- Este modelo apoya la presencia de agua líquida en la superficie en el pasado de Marte.
Palabras clave:
La disciplina de la NASA es la exobiología.La Disciplina de la NASA número 52-90 fue aprobada por la NASA.Programa de exobiología de la NASA Programa de exobiología de la NASA.No perteneciente al Centro de la NASA.Más Videos Relacionados
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