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Geodinámica antigua y hidrología a escala global en Marte
R J Phillips1, M T Zuber, S C Solomon
1McDonnell Center for the Space Sciences and Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA.
Science (New York, N.Y.)
|April 3, 2001
Resumen
La elevación de Tharsis en Marte dio forma a la gravedad y la topografía del planeta, influyendo en las antiguas redes de valles. Su actividad volcánica puede haber creado un clima más cálido, lo que permite los primeros ríos marcianos.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- La geofísica es la geofísica.
- Geología Geología Geología.
Sus antecedentes:
- La subida de Tharsis es una importante provincia volcánica en Marte.
- Su inmensa carga influye significativamente en la forma global marciana y en los campos de gravedad.
Objetivo del estudio:
- Para explicar la forma global y las anomalías de gravedad de Marte.
- Para comprender la influencia de la subida de Tharsis en la topografía y el clima marcianos.
- Para investigar la formación de las antiguas redes de valles marcianos.
Principales métodos:
- Análisis de la forma global de Marte y el campo gravitatorio de longitud de onda larga.
- Interpretación geológica de las características topográficas y anomalías de gravedad.
- Modelado de la carga volcánica y sus consecuencias climáticas.
Principales resultados:
- La subida de Tharsis explica las anomalías de gravedad negativa y un valle topográfico alrededor de Tharsis.
- También explica la gravedad y los máximos topográficos en Arabia Terra y Utopía.
- Estas características se establecieron al final de la época de Noé, influyendo en la formación de la red de valles.
- La desgasificación volcánica de los magmas de Tharsis puede haber apoyado un clima más cálido.
Conclusiones:
- La subida de Tharsis es el principal motor de las características geológicas y topográficas a gran escala de Marte.
- Los cambios climáticos inducidos por Tharsis probablemente facilitaron el desarrollo de los primeros sistemas fluviales en Marte.
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