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Falta de hielo expuesto dentro del polo sur lunar El cráter Shackleton Crater
Junichi Haruyama1, Makiko Ohtake, Tsuneo Matsunaga
1Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 229-85105, Japan.
Science (New York, N.Y.)
|October 25, 2008
Resumen
El cráter Shackleton puede contener hielo de agua, pero las imágenes no revelan depósitos de hielo puro en el suelo. Se necesitan análisis adicionales para confirmar si el hielo se mezcla con el suelo o está ausente.
Área de la Ciencia:
- La ciencia lunar es la ciencia lunar.
- Geología planetaria y geología planetaria.
- Astrobiología Astrobiología.
Sus antecedentes:
- El cráter Shackleton en el polo sur lunar está permanentemente sombreado.
- Estudios anteriores dedujeron la presencia de depósitos de hielo de agua dentro del cráter.
Objetivo del estudio:
- Para obtener imágenes del interior del cráter Shackleton.
- Para evaluar la presencia y la forma de depósitos de hielo de agua.
Principales métodos:
- Utilizó la cámara de terreno (TC) en la nave espacial Selenological and Engineering Explorer (SELENE).
- Desarrolló un modelo de forma de cráter a partir de datos estéreo de TC.
- Analizó el albedo del suelo del cráter y las temperaturas estimadas.
Principales resultados:
- Se obtuvo con éxito una imagen del interior del cráter con poca luz. interior del cráter.
- Temperaturas estimadas del suelo del cráter por debajo de 90 Kelvin, adecuadas para el hielo de agua.
- Los datos de albedo de resolución espacial de TC sugieren que no hay depósitos de hielo de agua pura expuestos.
Conclusiones:
- Si bien las condiciones son lo suficientemente frías como para que haya hielo, no se encontró evidencia directa de hielo de agua pura a la resolución actual.
- El hielo de agua puede estar diseminado dentro del regolito o ausente del suelo del cráter.
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