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Pruebas de un vínculo entre las detonaciones termonucleares atmosféricas y el ácido nítrico
Nature
|March 9, 2018
Resumen
Los núcleos de hielo de los glaciares revelan que las pruebas de armas termonucleares atmosféricas impactaron significativamente los niveles de nitrato de nieve. Las detonaciones nucleares liberaron óxidos de nitrógeno, influyendo en la química atmosférica y potencialmente en el clima.
Área de la Ciencia:
- Paleoclimatología
- Química de la atmósfera
- Ciencias del medio ambiente
Sus antecedentes:
- Los núcleos de los glaciares en lugares de alta altitud y baja temperatura ofrecen información sobre la química del aire atmosférico en el pasado.
- Estos datos son valiosos para los modelos de cambio climático y el estudio de los patrones de precipitación ácida.
Objetivo del estudio:
- Investigar la influencia de las pruebas de armas termonucleares atmosféricas (ATWT) en el contenido de nitratos en la nieve de los glaciares.
- Comprender el vínculo entre la intensidad de la detonación nuclear y los compuestos de nitrógeno atmosférico.
Principales métodos:
- Análisis de un núcleo de hielo de un glaciar de alta altitud y baja temperatura.
- Cuantificación del contenido de nitratos en las capas de nieve correspondientes a la era ATWT.
Principales resultados:
- Se encontró una correlación significativa entre la intensidad de las detonaciones nucleares y el contenido de nitrato en la nieve.
- Se identificaron bolas de fuego nucleares como una fuente de óxidos de nitrógeno (NOx) en la atmósfera, lo que lleva a la precipitación de ácido nítrico.
Conclusiones:
- Las pruebas de armas termonucleares atmosféricas demuestran depósitos de nitrato modulados en la nieve de los glaciares.
- Los óxidos de nitrógeno y aerosoles resultantes pueden haber tenido un impacto climático.
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