Fig. 1From: On the use of ELF/VLF emissions triggered by HAARP to simulate PLHR and to study associated MLR eventsTrace of the DEMETER half-orbit recorded on August 23, 2007 with times. The positions of HAARP and its conjugate point are indicated by red dots and circles. The advantage of a day time half-orbit is that if the track is close to HAARP in the Northern hemisphere, it is also close to the HAARP conjugate point a few tens of minutes after in the Southern hemisphereBack to article page