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Ralentización de la rotación planetaria influye en el ciclo de nutrientes y la oxigenación del océano
Ashika Capirala1, Stephanie L Olson1
1Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN 47907, USA.
Science advances
|January 21, 2026
Resumen
La desaceleración de la rotación de la Tierra impulsa la circulación oceánica, aumentando los nutrientes y el oxígeno vitales para la vida marina y la habitabilidad. Este factor histórico puede haber influido en la evolución animal y los niveles de oxígeno planetarios.
Área de la Ciencia:
- Ciencias del Sistema Terrestre
- Oceanografía
- Astrobiología
Sus antecedentes:
- La habitabilidad marina depende de nutrientes y oxígeno, regulados por la circulación oceánica.
- La comprensión de la circulación oceánica pasada y de exoplanetas es limitada.
- La rotación de la Tierra se ha ralentizado, lo que afecta la dinámica oceánica a través del efecto Coriolis.
Objetivo del estudio:
- Investigar cómo la rotación planetaria influye en la circulación y biogeoquímica oceánica.
- Modelar los efectos de la desaceleración de la rotación en la habitabilidad marina.
- Explorar el papel de la historia rotacional de la Tierra en la oxigenación de la superficie y la evolución animal.
Principales métodos:
- Se utilizó un modelo del sistema terrestre tridimensional.
- Se simularon los efectos de la disminución de las tasas de rotación planetaria.
- Se analizaron los cambios en la circulación oceánica, el ciclo de nutrientes y los flujos de oxígeno.
Principales resultados:
- La rotación más lenta mejora el afloramiento impulsado por el viento y la circulación oceánica global.
- El reciclaje de nutrientes se vuelve más eficiente, impulsando la productividad fotosintética.
- La oxigenación del océano mejora en atmósferas bien oxigenadas; los flujos de oxígeno aumentan en atmósferas pobremente oxigenadas.
Conclusiones:
- La historia rotacional de la Tierra es un factor importante en la oxigenación oceánica a largo plazo.
- La desaceleración de la rotación mejora la habitabilidad marina al mejorar la disponibilidad de nutrientes y oxígeno.
- Los cambios rotacionales pueden haber desempeñado un papel de fondo en la evolución de la vida compleja, incluidos los animales.
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