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La actividad hidrotermal del fondo marino vincula el clima con la tectónica: el efecto invernadero de dióxido de
1Department of Atmospheric and Oceanic Science, University of Michigan, Ann Arbor 48109, USA.
Science (New York, N.Y.)
|January 11, 1985
Resumen
La actividad hidrotermal del fondo del océano fluctúa significativamente, vinculada a los cambios en las placas tectónicas, no solo a las tasas de propagación. Esta mayor actividad puede haber causado eventos pasados de calentamiento global.
Área de la Ciencia:
- Oceanografía La oceanografía es la oceanografía.
- Geología Geología Geología.
- Ciencias del clima Ciencias del clima Ciencias del clima
Sus antecedentes:
- La actividad hidrotermal del fondo del océano es un componente clave del sistema climático de la Tierra.
- Comprender las fluctuaciones pasadas es crucial para predecir el cambio climático futuro.
Objetivo del estudio:
- Para investigar la relación entre la actividad tectónica y el flujo hidrotermal.
- Explorar el vínculo entre la actividad hidrotermal del Eoceno y el clima global.
Principales métodos:
- Análisis de los datos del Proyecto de perforación de aguas profundas Leg 92 en el sureste del Pacífico.
- Correlación del flujo hidrotermal con las configuraciones del límite de las placas tectónicas y las tasas de propagación.
Principales resultados:
- La actividad hidrotermal del fondo marino puede variar en un orden de magnitud con el tiempo.
- Los episodios de flujo hidrotermal pico coinciden con cambios importantes en los límites de las placas de transformación de la cresta.
- Se supone que el flujo hidrotermal inducido por la actividad tectónica del Eoceno ha causado un efecto invernadero global.
Conclusiones:
- La actividad hidrotermal está fuertemente influenciada por la dinámica de las placas tectónicas.
- Los episodios pasados de mayor actividad hidrotermal pueden servir como análogos para el futuro calentamiento global inducido por el dióxido de carbono.
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