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Cambios en la superficie observados en un volcán venusiano durante la misión Magallanes
Robert R Herrick1, Scott Hensley2
1Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775, USA.
Science (New York, N.Y.)
|March 15, 2023
Resumen
La evidencia sugiere actividad volcánica en Venus. Los datos de radar de la nave espacial Magellan revelaron un respiradero volcánico que cambia de forma durante un período de 8 meses, lo que indica actividad geológica reciente en el planeta.
Área de la Ciencia:
- Ciencias planetarias
- Geología
- Volcanología
Sus antecedentes:
- Venus posee una superficie geológicamente joven, pero la presencia de volcanismo activo sigue sin confirmarse.
- Comprender la actividad geológica de Venus es crucial para los estudios de evolución planetaria.
Objetivo del estudio:
- Para investigar pruebas de actividad volcánica en curso en Venus.
- Para analizar los cambios en las características volcánicas utilizando los datos de la misión Magellan.
Principales métodos:
- Utilizó imágenes de radar de apertura sintética (SAR) de la nave espacial Magallanes.
- Comparación de imágenes de regiones volcánicas tomadas en diferentes épocas (1990-1992).
- Los cambios analizados en un respiradero volcánico específico y los flujos circundantes durante un intervalo de 8 meses.
Principales resultados:
- Identificó un respiradero volcánico de aproximadamente 2.2 kilómetros cuadrados que exhibió cambios de forma entre dos épocas de imágenes de Magallanes.
- Se observaron flujos volcánicos adicionales cuesta abajo desde el respiradero en imágenes posteriores.
- Reconocimiento de las posibles diferencias geométricas de las imágenes como factor de visibilidad de las características.
Conclusiones:
- Los cambios observados en el respiradero volcánico se interpretan como una fuerte evidencia de volcanismo activo en Venus.
- Este hallazgo sugiere que Venus puede estar geológicamente activo en la actualidad.
- Se necesita más investigación para confirmar el alcance y la naturaleza de la actividad volcánica venusiana.
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