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Flujos acantarianos y relaciones de estroncio a clorinidad en el norte del Océano Pacífico
Resumen
Las acantharias contribuyen significativamente al océano.
Área de la Ciencia:
- La geoquímica marina es la geoquímica marina.
- Ciclos biogeoquímicos y ciclos biogeoquímicos.
Sus antecedentes:
- El ciclo del estroncio en el Pacífico Norte no se entiende completamente.
- Las partículas y los flujos de estroncio disueltos juegan un papel en la biogeoquímica del océano.
Objetivo del estudio:
- Para investigar el ciclo del estroncio en el Pacífico Norte.
- Para determinar el papel de los acantharios en el ciclo del estroncio.
Principales métodos:
- Se utilizaron trampas de sedimentos a la deriva libre para medir los flujos de partículas de sulfato de estroncio.
- Análisis de la relación entre el estroncio y la clorinidad a varias profundidades (100-3500m) en el Pacífico Norte.
- Comparó los datos de flujo de partículas con los modelos de flujo de estroncio disuelto.
Principales resultados:
- Se observaron flujos sustanciales de sulfato de estroncio de esqueletos y quistes acantarianos en la columna de agua superior.
- Los flujos máximos de celestita se produjeron a 400 metros, con flujos mínimos por debajo de 900 metros.
- La disolución de Acantharian en el kilómetro superior explica el estroncio observado a mínimos y máximos de clorinidad.
Conclusiones:
- Las acantharias son una fuente importante de partículas de estroncio en el Pacífico Norte.
- La disolución de los esqueletos de acantharios contribuye significativamente al estroncio disuelto.
- Las acantharias juegan un papel crucial en el presupuesto general de estroncio oceánico.
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