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Simulation of the Planetary Interior Differentiation Processes in the Laboratory

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Estructura del manto superior de Marte de los datos sísmicos de InSight

Amir Khan^1,2, Savas Ceylan³, Martin van Driel^3,4

¹Institute of Geophysics, ETH Zürich, Zürich, Switzerland. akhan@ethz.ch.

Science (New York, N.Y.)

|August 26, 2021

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Marte también.

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Área de la Ciencia:

Sismología
Ciencias planetarias
La geofísica

Sus antecedentes:

El módulo de aterrizaje InSight ha recopilado datos sísmicos en Marte durante dos años.
Comprender la estructura interior de Marte y su estado termoquímico es crucial para la ciencia planetaria.

Objetivo del estudio:

Para restringir la estructura interior de Marte hasta 800 kilómetros usando datos sísmicos.
Para investigar la litosfera térmica y la producción de calor en la corteza marciana.

Principales métodos:

Análisis de las fases de ondas corporales directas (P y S) y reflejadas en la superficie (PP, PPP, SS, SSS) de ocho terremotos en Marte.
Integración de las restricciones sísmicas con los modelos geodinámicos.

Principales resultados:

Identificó una zona de baja velocidad que sugiere una litosfera térmica marciana significativamente más gruesa en comparación con la Tierra.
Observamos una débil zona de sombra de onda S a distancias telesísmicas.
El enriquecimiento previsto de la corteza marciana en elementos productores de calor (13-20 veces el manto primitivo).

Conclusiones:

La estructura interior de Marte se caracteriza por una litosfera gruesa y más fría.
La corteza marciana está muy enriquecida en elementos que producen calor, superando las estimaciones anteriores.
Este enriquecimiento contribuye a un flujo de calor superficial de moderado a elevado en Marte.