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Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
Published on: July 30, 2020
La luna: fuentes de las anomalías magnéticas de la corteza terrestre
Science (New York, N.Y.)
|April 6, 1979
Resumen
Los datos del magnetómetro del subsatélite Apollo 16 revelan anomalías magnéticas sobre las cuencas de impacto lunar. El depósito gamma de Reiner muestra una fuerte anomalía magnética, lo que sugiere una magnetización significativa de los materiales de la corteza lunar durante mil millones de años.
Área de la Ciencia:
- Geología lunar geología lunar.
- El magnetismo planetario es el magnetismo planetario.
- La geofísica es la geofísica.
Sus antecedentes:
- Los datos del subsatélite Apolo 16 proporcionan información sobre el campo magnético lunar.
- Las anomalías magnéticas están asociadas con formaciones geológicas lunares específicas.
Objetivo del estudio:
- Para analizar los datos del magnetómetro del subsatélite Apolo 16 que no habían sido mapeados anteriormente.
- Para investigar las anomalías magnéticas en el lado lunar cercano.
- Para correlacionar las anomalías magnéticas con las características geológicas.
Principales métodos:
- Análisis de los datos del magnetómetro del subsatélite Apollo 16 a baja altitud.
- Correlación de las anomalías magnéticas con las características de la superficie lunar (por ejemplo, las formaciones Fra Mauro y Cayley, maria, cráteres).
- Cálculo de los niveles de magnetización basados en la fuerza de la anomalía y las características del depósito.
Principales resultados:
- Anomalías magnéticas de amplitud media detectadas sobre las formaciones Fra Mauro y Cayley.
- Ausencia de anomalías significativas sobre las marias y los cráteres mayores.
- La mayor anomalía se correlaciona con el depósito gamma de Reiner, lo que indica una alta magnetización.
- La magnetización media mínima calculada del depósito gamma de Reiner es de ~5.2 x 10^-2 E.M.U./g.
- La edad de emplazamiento inferida de Reiner gamma es <= 2,9 mil millones de años.
Conclusiones:
- La magnetización de la corteza lunar es heterogénea y está vinculada a unidades geológicas específicas.
- El depósito gamma de Reiner posee una magnetización excepcionalmente alta.
- La magnetización de la corteza lunar persistió durante más de mil millones de años, extendiéndose más allá de hace 2.900 millones de años.
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