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Inusuales ecos de radar desde la capa de hielo de Groenlandia
Science (New York, N.Y.)
|September 24, 1993
Resumen
El radar aéreo revela Groenlandia.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Glaciología glaciología.
- La detección remota con sensores.
Sus antecedentes:
- Las imágenes de radar son cruciales para el estudio de las superficies planetarias.
- Los entornos helados terrestres y los cuerpos exteriores del sistema solar pueden exhibir firmas de radar similares.
- Comprender estas similitudes ayuda en las interpretaciones de teledetección.
Objetivo del estudio:
- Para comparar las propiedades de radar del terreno helado de Groenlandia con los satélites galileanos de Júpiter.
- Para investigar los ecos de radar únicos de la zona de percolación de Groenlandia.
- Para analizar las relaciones de polarización anómalas en las señales de radar.
Principales métodos:
- Imágenes aéreas de radar de la capa de hielo de Groenlandia.
- Análisis de ecos de radar en longitudes de onda de 5.6 y 24 cm.
- Comparación con los datos de radar existentes de satélites helados (longitudes de onda de 3,5 y 13 cm).
Principales resultados:
- El terreno helado de Groenlandia exhibe propiedades de radar únicas en comparación con otras superficies terrestres.
- Los ecos de radar de Groenlandia son intensamente fuertes, similares a los de los satélites helados de Galileo.
- Se observaron relaciones anómalas de polarización circular y lineal tanto en los ecos de radar de satélite de Groenlandia como en los de Galileo.
Conclusiones:
- Las propiedades de radar de la zona de percolación de Groenlandia comparten similitudes con las lunas heladas de Júpiter.
- La heterogeneidad del subsuelo difiere significativamente debido a los distintos procesos de formación (fusión/recongelación frente al bombardeo de meteoroides).
- La teledetección por radar proporciona información sobre diversos entornos helados en todo el sistema solar.
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