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Updated: Sep 9, 2025

Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 15, 2013
Detección sísmica de un núcleo interno sólido de 600 km en Marte
Huixing Bi1,2, Daoyuan Sun3,4, Ningyu Sun2,5
1National Key Laboratory of Deep Space Exploration/School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China.
Marte posee un núcleo interno sólido, confirmado por los datos sísmicos de InSight. Este descubrimiento impacta nuestra comprensión del planeta
Área de la Ciencia:
- Ciencias planetarias
- Sismología
- La geofísica
Sus antecedentes:
- Los núcleos rocosos de los planetas influyen en la composición, la evolución térmica y la historia magnética.
- Se sabe que el núcleo marciano es al menos parcialmente líquido, pero el estado sólido no está confirmado.
Objetivo del estudio:
- Para determinar si Marte tiene un núcleo interno sólido usando datos sísmicos.
- Para caracterizar las propiedades e implicaciones de un núcleo interno marciano.
Principales métodos:
- Análisis de los datos sísmicos de la misión InSight.
- Identificación de las fases sísmicas (PKKP, PKiKP) indicativas de un núcleo interno.
- Modelado de inversión para limitar el radio y las propiedades del núcleo interno.
Principales resultados:
- Demostró la presencia de un núcleo interno sólido en Marte.
- Limito el radio del núcleo interno de Marte a 613 ± 67 km.
- Se observó un salto de velocidad de compresión de ~ 30% en el límite interno del núcleo.
Conclusiones:
- El núcleo interno de Marte probablemente contiene elementos de luz segregados de la cristalización del núcleo.
- Proporciona un punto de datos clave para comprender el estado térmico y químico de Marte.
- Informa los modelos de la evolución del campo magnético marciano y la generación de dínamos planetarios.
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