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Pruebas de la cámara estéreo de alta resolución Mars Express para un mar congelado cerca del ecuador de Marte
John B Murray1, Jan-Peter Muller, Gerhard Neukum
1Department of Earth Sciences, The Open University, Milton Keynes MK7 6AA, UK. J.B.Murray@open.ac.uk
Nature
|March 18, 2005
Resumen
La evidencia sugiere que existe un gran lago congelado, posiblemente con hielo en manchas, en Elysium en Marte. Este potencial cuerpo de agua de 5 millones de años de antigüedad puede contener pistas sobre la antigua vida marciana.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Geología Geología Geología.
- Astrobiología Astrobiología.
Sus antecedentes:
- Las fisuras de Cerberus Fossae en Marte son fuentes hipotéticas de inundaciones pasadas de lava y agua.
- Existe evidencia de llanuras de lava en el este de Elysium, pero se cree que los cuerpos de agua asociados se han evaporado.
Objetivo del estudio:
- Para investigar el potencial de cuerpos de agua existentes en Marte vinculados con el Cerberus Fossae.
- Para analizar imágenes de cámara estéreo de alta resolución en busca de evidencia de actividad acuática pasada.
Principales métodos:
- Análisis de imágenes de cámara estéreo de alta resolución (HRSC) de la nave espacial Mars Express.
- Cráter contando para determinar la edad de las características geológicas.
Principales resultados:
- Identificación de un lago potencialmente congelado, de aproximadamente 800 x 900 km, en el sur de Elysium.
- La característica exhibe características consistentes con una masa de agua congelada, posiblemente con hielo de paquete de superficie.
- El recuento de cráteres sugiere una edad de 5 +/- 2 millones de años para la característica.
Conclusiones:
- Los hallazgos sugieren que grandes masas de agua aún pueden existir en un estado congelado en Marte.
- Esta ubicación representa un candidato principal para preservar la evidencia de una potencial vida marciana primitiva.
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