Astrometría e Historia de la Astronomía

José Gómez Castaño 

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    Mi otro blog

    Blogalia

    Mapas de evolución de la contaminación lumínica 1992 - 2010

    Cada vez nos acostumbramos mas a tener un cielo nocturno lleno de luces que impiden ver las estrellas. Y ultimamente, hasta a los artistas les ha dado por "iluminar la noche".

    Una buena manera de comprender un poco mejor como se va deteriorando la oscuridad de la noche y el despilfarro energetico que esto supone, es darle la vuelta literalmente a nuestra situacion, y observar la tierra desde el cielo. Desde hace tiempo, se dispone de imagenes de satelite nocturnas de la superificie terrestre. Y de cuando en cuando aparecen en periodicos, normalmente para rellenar los huecos provocados por la falta de otro tipo de noticias.

    Entre otras tareas, la mision DMSP de la agencia NOAA de Estados Unidos, lleva a cabo este tipo de tomas nocturnas. Aprovechando las observaciones realizadas desde 1992 hasta hoy, es posible hacer un recorrido historico para tomar conciencia de como ha ido empeorando la situacion. Para poder analizar estas observaciones, he recogido las mas importantes en un solo entorno. Desde el, se puede navegar por todo el planeta en ese periodo de tiempo y detenerse en cualquier zona de interes, haciendo zoom sobre ella.

    Las imagenes muestran la iluminacion una vez eliminada la luz lunar y crepuuscular. De esta forma, las zonas brillantes corresponden a emisiones provocadas desde tierra por la iluminacion procedente de actividades humanas.

    VISUALIZAR EL MAPA INTERACTIVO






    2010-10-25 20:47 | Categoría: | 41 Comentarios | Enlace



    Referencias (TrackBacks)

    URL de trackback de esta historia http://meridies.blogalia.com//trackbacks/68037

    Comentarios

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