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La reflectancia espectral y las correlaciones morfológicas en el este de Terra Meridiani, Marte
R E Arvidson1, F Poulet, J-P Bibring
1Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA. arvidson@wunder.wustl.edu
Science (New York, N.Y.)
|February 19, 2005
Resumen
El expreso de Marte es el Mars Express.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Astrogeología y Astrogeología.
- La mineralogía es la Mineralogía.
Sus antecedentes:
- La Terra Meridiani del Este en Marte exhibe diversos terrenos geológicos.
- Exploraciones anteriores del rover Opportunity habían identificado llanuras con hematita.
Objetivo del estudio:
- Para investigar la mineralogía y la distribución de materiales portadores de agua en el este de Terra Meridiani utilizando datos de Mars Express.
- Comprender el contexto geológico y la escala de los antiguos ambientes acuosos.
Principales métodos:
- Análisis de los datos de las imágenes hiperespectrales del instrumento OMEGA (Observatoire pour la Minéralogie, l'Eau, les Glaces, et l'Activité).
- Comparación de los datos de OMEGA con los hallazgos geológicos y mineralógicos del rover Opportunity.
Principales resultados:
- Agua molecular ubicua detectada en materiales grabados del terreno.
- Agua cristalina identificada en kieserita (MgSO4.H2O) en regiones específicas del norte.
- Las similitudes mineralógicas sugieren antiguos ambientes acuosos a escala regional.
Conclusiones:
- Los depósitos de terreno grabados y las rocas en capas comparten similitudes minerológicas, lo que indica una antigua actividad acuática generalizada.
- Los antiguos entornos acuosos en Terra Meridiani se extienden a escalas regionales, de acuerdo con los hallazgos del rover.
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