HAARP array for auoral research,artwork

Numéro d’image : 11633193
HAARP array for auoral research,artwork
HAARP array for auoral research. Artwork of activity in the ionosphere (coloured lights) being triggered and detected by the array of antennas of the HAARP (High Frequency Active Auroral Research Program). Planned by US agencies,construction took place between 1993 and 2007. The main array,the Ionospheric Research Instrument (IRI),consists of 180 antennas located in Gakona,Alaska,USA. It transmits a high-frequency radio signal upwards into the ionosphere,with the resulting excitation detected by receivers. The effect is similar to that of aurorae,but of much lesser intensity
Licence : Droits gérés
Crédit: Science Photo Library / Victor Habbick Visions
Taille de l’image : 5000 px × 3600 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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