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Una edad de hielo registrada en los depósitos polares de Marte
Isaac B Smith1, Nathaniel E Putzig2, John W Holt3
1Department of Space Studies, Southwest Research Institute, Boulder, CO 80302, USA. isaac@boulder.swri.edu.
Science (New York, N.Y.)
|May 28, 2016
Resumen
Marte también.
Área de la Ciencia:
- Ciencias planetarias
- Ciencias del clima
- Geología
Sus antecedentes:
- Los depósitos de hielo polar en Marte preservan un registro del cambio climático.
- Los datos de radar revelan estructuras de hielo en capas indicativas de procesos climáticos pasados.
Objetivo del estudio:
- Para analizar los datos de observación de la acumulación de hielo polar en Marte.
- Comprender la historia de la acumulación de hielo y su relación con los ciclos climáticos.
Principales métodos:
- Análisis detallado de los datos de observación de radar de los polos marcianos.
- Cuantificación del volumen de hielo acumulado desde la última glaciación.
Principales resultados:
- Aproximadamente 87.000 kilómetros cúbicos de hielo se han acumulado en los polos marcianos en los últimos 370.000 años.
- Este volumen de hielo es equivalente a una capa global de ~ 60 centímetros.
- La mayoría del hielo acumulado se encuentra en el Polo Norte.
Conclusiones:
- El hielo polar marciano registra la historia del clima vinculada a los ciclos orbitales.
- Los resultados proporcionan restricciones para modelar climas marcianos pasados y futuros.
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