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Interacción del agua de mar y la lava durante las erupciones submarinas en las cordilleras oceánicas
Michael R Perfit1, Johnson R Cann, Daniel J Fornari
1Department of Geological Sciences, University of Florida, Gainesville, Florida 32611, USA. perfit@geology.ufl.edu
Nature
|November 7, 2003
Resumen
Los flujos de lava de aguas profundas producen burbujas de vapor que se elevan e interactúan con el magma, lo que desafía las suposiciones anteriores sobre el volcanismo de la cresta oceánica media y la formación de la corteza oceánica.
Área de la Ciencia:
- Geología Geología Geología.
- Oceanografía La oceanografía es la oceanografía.
- Volcanología Volcanología.
Sus antecedentes:
- Las cordilleras del océano medio generan flujos de lava que forman la corteza oceánica.
- Las interacciones entre el agua de mar y la lava influyen en la dinámica y la química del flujo.
- El pensamiento prevaleciente sugería una limitada producción de vapor e interacción debido a la alta presión y la corteza fría.
Objetivo del estudio:
- Para investigar la interacción entre el agua de mar y la lava basáltica en las cordilleras oceánicas.
- Desafiar la noción de que la producción de vapor es insignificante bajo alta presión.
- Para entender el papel del vapor en la formación de la corteza oceánica.
Principales métodos:
- Evidencia observacional de flujos de lava de aguas profundas.
- Análisis de las interacciones lava-agua de mar a altas presiones y temperaturas.
Principales resultados:
- Las burbujas de vapor de agua de mar se forman y se elevan a través de las bases del flujo de lava.
- Estas burbujas se acumulan debajo de la corteza superior solidificada.
- El vapor interactúa química y físicamente con la lava fundida.
Conclusiones:
- La formación de vapor es importante en los flujos de lava de aguas profundas.
- Este proceso influye en la dinámica y la química del flujo de lava.
- La formación de vapor contribuye a las características de colapso y bajas velocidades sísmicas en la corteza oceánica.
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