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Se filtración submarina de dióxido de carbono en el Norton Sound, Alaska
Resumen
Los procesos geotérmicos están activos en Norton Sound, indicado por una filtración única de gas submarino. Esta filtración contiene principalmente dióxido de carbono, con solo una pequeña fracción de hidrocarburos, lo que sugiere una actividad geológica inusual.
Área de la Ciencia:
- La geoquímica es la geoquímica.
- Geología marina Geología marina.
- Procesos geotérmicos y procesos geotérmicos.
Sus antecedentes:
- Una filtración de gas submarino en Norton Sound exhibe una inusual composición de hidrocarburos.
- Estudios previos observaron hidrocarburos similares al petróleo, de bajo peso molecular en la filtración.
Objetivo del estudio:
- Para investigar la composición y el origen de los hidrocarburos y el dióxido de carbono en una fuga de gas submarino de Norton Sound.
- Para determinar el papel de los procesos geotérmicos en la mezcla de gases de la filtración.
Principales métodos:
- Análisis de la composición del gas, determinando el porcentaje de hidrocarburos y dióxido de carbono.
- Análisis isotópico del dióxido de carbono (delta) (C) (PDB) = -2,7 por mil) y el metano (delta) (C) (PDB) = -36 por mil).
Principales resultados:
- El gas que se filtra es predominantemente dióxido de carbono (98%), con hidrocarburos que comprenden sólo alrededor del 0,04%.
- Las firmas isotópicas tanto del dióxido de carbono como del metano sugieren un origen geotérmico.
Conclusiones:
- La filtración de gas de Norton Sound proviene principalmente de la actividad geotérmica.
- La inusual mezcla de gases, dominada por el dióxido de carbono, es un indicador clave de los procesos geotérmicos activos en la región.
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