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Experimentos de propiedades magnéticas en la exploración de Marte con el Rover Spirit en el cráter Gusev
P Bertelsen1, W Goetz, M B Madsen
1Center for Planetary Science, Danish Space Research Institute and Niels Bohr Institute for Astronomy, Physics and Geophysics, University of Copenhagen, DK-2100 Copenhagen, Denmark. preben@fys.ku.dk
Science (New York, N.Y.)
|August 7, 2004
Resumen
Los minerales magnéticos en el polvo y las rocas marcianas fueron identificados utilizando experimentos de propiedades magnéticas. Estos experimentos sugieren que el agua líquida jugó un papel en la formación y alteración de estos minerales en Marte.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- La mineralogía es la Mineralogía.
- La geoquímica es la geoquímica.
Sus antecedentes:
- El polvo marciano y las partículas atmosféricas contienen minerales ferrimagnéticos.
- Estos minerales, como la magemita y la magnetita, comprenden aproximadamente el 2% de polvo en peso.
- La fracción magnética del polvo marciano es visualmente más oscura que el polvo promedio.
Objetivo del estudio:
- Para identificar minerales magnéticos en el polvo y las rocas marcianas.
- Determinar el papel del agua líquida en la formación y alteración de estos minerales magnéticos.
- Para analizar las propiedades magnéticas de muestras geológicas marcianas.
Principales métodos:
- Se realizaron experimentos de propiedades magnéticas en muestras marcianas.
- Análisis de partículas de polvo suspendidas en la atmósfera marciana.
- Examen de muestras de roca, incluidas las que fueron molidas por el rover Spirit.
Principales resultados:
- Los minerales ferrimagnéticos, incluida la magnetita, son frecuentes en el polvo marciano.
- Se detectó magnetita en las dos primeras rocas analizadas por el rover Spirit.
- Las fracciones de polvo más magnéticas exhiben una apariencia más oscura.
Conclusiones:
- Los experimentos de propiedades magnéticas son cruciales para comprender la mineralogía marciana.
- La evidencia sugiere un papel potencial para el agua líquida en la formación y alteración de minerales magnéticos en Marte.
- La presencia y las características de los minerales magnéticos proporcionan información sobre la historia geológica de Marte.
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