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Updated: May 25, 2025

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Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 15, 2013
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El ajuste isostático glacial revela la estructura de viscosidad interior de Marte
A Broquet1, A-C Plesa2, V Klemann3
1Institute for Planetary Research, German Aerospace Center, DLR, Berlin, Germany. adrien.broquet@dlr.de.
Nature
|February 26, 2025
Resumen
Marte también.
Área de la Ciencia:
- Ciencias planetarias
- La geofísica
- Glaciología
Sus antecedentes:
- El ajuste isostático glacial (GIA) es clave para comprender la viscosidad planetaria.
- Los estudios de GIA son raros en otros planetas debido a los limitados datos de observación.
- La capa polar norte de Marte es una característica única para el análisis de GIA.
Objetivo del estudio:
- Investigar la ubicación de la capa de hielo del polo norte de Marte.
- Determina la estructura de viscosidad interna actual de Marte.
- Modelos de restricción GIA utilizando nuevos datos.
Principales métodos:
- Modelos combinados de evolución térmica.
- Cálculos de la deformación viscoelástica.
- Análisis de las observaciones de radar, datos de campo de gravedad y datos sísmicos.
Principales resultados:
- Movimiento descendente en las regiones del norte de Marte.
- Se requiere una alta viscosidad (2-6 × 10^22 Pa·s por debajo de 500 km).
- Modelos consistentes con una corteza gruesa (> 40 km) y un manto empobrecido (> 90% de elementos radiogénicos).
Conclusiones:
- La capa polar norte de Marte se formó hace 1.712.0 millones de años.
- La deformación litosférica es <0,13 mm/año.
- Las futuras misiones de gravedad limitarán aún más la GIA marciana.
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