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Mapas del hidrógeno subterráneo del detector de neutrones de alta energía, Mars Odyssey
I Mitrofanov1, D Anfimov, A Kozyrev
1Institute for Space Research, Moscow 117997, Russia.
Resumen
La Odisea de Marte fue la Odisea de Marte.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Astrogeología y Astrogeología.
- La geofísica es la geofísica.
Sus antecedentes:
- La presencia y distribución de hidrógeno subterráneo en Marte son indicadores clave de agua pasada y presente.
- Las misiones anteriores han proporcionado evidencia de hielo de agua, pero el mapeo detallado de las concentraciones de hidrógeno subterráneo está en curso.
Objetivo del estudio:
- Mapear la distribución del hidrógeno subterráneo en Marte utilizando datos de detección de neutrones.
- Para inferir la presencia y la forma potencial de materiales ricos en hidrógeno.
Principales métodos:
- Utilizó datos del detector de neutrones de alta energía (HEND) a bordo de la nave espacial Mars Odyssey.
- Analizó los déficits del recuento de neutrones durante 55 días de mapeo.
- Modelado empleado para interpretar la relación entre los déficits de neutrones y la composición del subsuelo.
Principales resultados:
- Se identificaron déficits significativos de neutrones de alta energía en las tierras altas del sur y las tierras bajas del norte de Marte.
- Interpretó estos déficits de neutrones como evidencia de hidrógeno concentrado en el subsuelo.
- Los resultados modelados sugieren la presencia de capas ricas en hielo de agua, de decenas de centímetros de espesor, como una posible explicación.
Conclusiones:
- El hidrógeno subterráneo se distribuye de manera desigual en Marte, con concentraciones notables en regiones específicas.
- Los datos apoyan fuertemente la presencia de una cantidad sustancial de agua subterránea helada.
- Se justifica una mayor investigación sobre el grosor y la distribución de estas capas ricas en hielo.
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