Árboles milenarios revelan una tormenta solar medieval del año 1200

Investigadores han descubierto pruebas de un potente evento de protones solares que alcanzó la Tierra alrededor del año 1200, tras analizar picos de carbono-14 en antiguos árboles japoneses y contrastarlos con registros medievales de auroras boreales rojas.

El estudio, dirigido por científicos del Instituto de Ciencia y Tecnología de Okinawa, identificó que este evento subextremo ocurrió entre el invierno de 1200 y la primavera de 1201. La investigación combinó mediciones ultraprecisas de carbono-14 obtenidas de árboles asunaro enterrados en la prefectura de Aomori con relatos históricos, que incluyen descripciones de luces rojas en el cielo del norte registradas en un diario japonés y reportes similares provenientes de China.

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