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Morfología y composición de la superficie de Marte: La Odisea de Marte Los resultados de THEMIS
Philip R Christensen1, Joshua L Bandfield, James F Bell
1Department of Geological Sciences, Arizona State University, Tempe, AZ 85287-6305, USA. phil.christensen@asu.edu
Science (New York, N.Y.)
|June 7, 2003
Resumen
El orbitador Mars Odyssey se encuentra en órbita.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Geología de Marte Geología de Marte
- La detección remota con sensores.
Sus antecedentes:
- El instrumento THEMIS de Mars Odyssey captura imágenes infrarrojas y visibles de Marte.
- Las características de la superficie revelan diversos procesos geológicos y cambios ambientales a lo largo del tiempo.
Objetivo del estudio:
- Analizar la composición y estructura de la superficie marciana utilizando los datos de THEMIS.
- Identificar las características geológicas y sus implicaciones para la historia marciana.
Principales métodos:
- Utilizó imágenes de longitud de onda infrarroja y visible del Sistema de Imágenes de Emisión Térmica (THEMIS).
- Analizó la morfología de la superficie, las variaciones de las capas y las firmas térmicas.
Principales resultados:
- Identificó capas litológicamente distintas que indican cambios ambientales temporales.
- Exposiciones del lecho rocoso a escala de kilómetros observadas y manto de polvo extendido.
- Se detectaron variaciones de composición, incluidos basaltos ricos en olivino.
- Se encontraron facies de eyección térmicamente distintas alrededor de cráteres y parches temporales de heladas de agua en el casquete polar norte.
Conclusiones:
- La superficie marciana muestra una importante diversidad geológica y evidencia del pasado dinamismo ambiental.
- Los datos de THEMIS proporcionan información crucial sobre la evolución geológica y los procesos de superficie de Marte.
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