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Vistas de la magnetosfera de la Tierra con las imágenes satelitales
J L Burch1, S B Mende, D G Mitchell
1Southwest Research Institute, Post Office Drawer 28510, San Antonio, TX 78228, USA. jburch@swri.edu
Resumen
La nave espacial IMAGE reveló nuevos detalles sobre la magnetosfera de la Tierra y las auroras. Mostró que las auroras de protones están hacia el ecuador de las auroras de electrones e identificó características únicas de la plasmasfera, incluida una cola de plasma.
Área de la Ciencia:
- Física del espacio Física del espacio
- La aeronomía es la aeronomía.
- Investigación de la magnetosfera Investigación de la magnetosfera.
Sus antecedentes:
- La magnetosfera de la Tierra y la atmósfera superior son regiones complejas influenciadas por la actividad solar.
- Comprender los fenómenos aurorales y la dinámica del plasma es crucial para la predicción del clima espacial.
Objetivo del estudio:
- Para presentar imágenes globales y datos de sondeo de radio de la nave espacial IMAGE.
- Investigar la distribución espacial y los orígenes de las emisiones aurorales.
- Para analizar la dinámica de las poblaciones de iones dentro de la magnetosfera interna y la plasmasfera.
Principales métodos:
- Utilizando técnicas de imágenes de fotones y átomos neutros.
- Empleando imágenes ultravioletas (UV) para la observación de las auroras y la plasmasfera.
- Aplicación de sonido de radio para mediciones atmosféricas e ionosféricas.
Principales resultados:
- Las auroras de protones se observan hacia el ecuador de las auroras de electrones; las auroras discretas son impulsadas principalmente por electrones.
- Las imágenes de átomos neutros energéticos demuestran una deriva de iones dependiente de la energía que forma la corriente de anillo.
- Las imágenes UV revelaron un valle antes de la medianoche y un hombro diurno en la plasmasfera, confirmando la teoría de la cola de plasma.
Conclusiones:
- La misión IMAGE proporciona vistas globales sin precedentes de la magnetosfera interna y la atmósfera superior.
- Se identifican distintas características espaciales y energéticas de las formas aurorales.
- Se establecen nuevos conocimientos sobre la estructura y la dinámica de la plasmasfera, incluida la cola de plasma.
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