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Updated: Feb 27, 2026

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Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
Published on: February 13, 2018
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Sobre la generación de espículas solares y ondas Alfvénicas
J Martínez-Sykora1,2, B De Pontieu2,3, V H Hansteen3,2
1Bay Area Environmental Research Institute, Petaluma, CA 94952, USA. juanms@lmsal.com.
Resumen
Las espículas solares son chorros en la cromosfera del Sol. La tensión magnética, amplificada por las interacciones neutras de iones, impulsa estos chorros, calentando la corona y generando ondas.
Área de la Ciencia:
- Física solar
- Física del plasma
- Magnetohidrodinámica
Sus antecedentes:
- La cromosfera solar contiene chorros llamados espículas, que impulsan el plasma hacia la corona a altas velocidades.
- El origen y el papel de las espículas en el calentamiento coronal y la generación de viento solar siguen siendo poco conocidos.
Objetivo del estudio:
- Para investigar los mecanismos físicos que impulsan las espículas solares.
- Para conectar los modelos teóricos de formación de espículas con los datos de observación.
Principales métodos:
- Comparación de las simulaciones magnetohidrodinámicas (MHD) con los datos de observación del espectrógrafo de imágenes de la región de interfaz (IRIS) y el telescopio solar sueco de 1 m (SST).
Principales resultados:
- Las espículas se originan por la amplificación y el transporte ascendente de la tensión magnética.
- Esta amplificación ocurre a través de interacciones iónico-neutrales o difusión ambipolar.
- La liberación impulsiva de la tensión magnética impulsa los flujos de plasma, calienta el plasma y genera ondas Alfvénicas.
Conclusiones:
- La difusión ambipolar y la tensión magnética son mecanismos clave en la formación y evolución de las espículas.
- Las espículas juegan un papel importante en la transferencia de energía e impulso de la cromosfera solar a la corona.
- Los hallazgos proporcionan una comprensión más clara de la dinámica de las espículas y su contribución al calentamiento coronal y al viento solar.
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