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Descubrimiento de depósitos de vapor en el regolito lunar
Science (New York, N.Y.)
|September 3, 1993
Resumen
Los bordes amorfos en los granos del suelo lunar no son de daños por radiación. En cambio, los impactos de micrometeoritos crean depósitos de vapor que alteran las propiedades del suelo lunar y la composición atmosférica.
Área de la Ciencia:
- Geología lunar geología lunar.
- Ciencias planetarias Ciencias planetarias.
- Ciencia de los materiales ciencia de los materiales.
Sus antecedentes:
- Los suelos lunares presentan granos minerales de tamaño micrométrico con bordes amorfos.
- Investigaciones anteriores atribuían estas llantas al daño de la radiación del viento solar.
Objetivo del estudio:
- Para investigar el origen y la composición de los bordes amorfos en los granos del suelo lunar.
- Para determinar el papel de estos bordes en las propiedades del regolito lunar y las interacciones atmosféricas.
Principales métodos:
- Se empleó microscopía electrónica para analizar la composición de los bordes amorfos.
- Comparación de los resultados experimentales con las teorías existentes sobre la formación del suelo lunar.
Principales resultados:
- Los bordes amorfos tienen una composición distinta de los granos minerales de su huésped.
- Las llantas son principalmente material depositado en vapor, originado por impactos de micrometeoritos.
- Se descubrió que los depósitos de vapor reducen las tasas de erosión del viento solar.
Conclusiones:
- Los impactos de micrometeoritos, no la radiación, son la fuente principal de los bordes amorfos en los granos lunares.
- Estos bordes influyen significativamente en las propiedades ópticas del regolito lunar y en los niveles de sodio y potasio atmosféricos lunares.
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