Fig. 17From: On the use of ELF/VLF emissions triggered by HAARP to simulate PLHR and to study associated MLR eventsZoom of Fig. 15. Comparison between the spectrograms recorded by DEMETER in the Southern hemisphere (top panel), and recorded at Chistochina (bottom panel). The power spectral density is color-coded according to the scale on the right. The black arrows indicate the correspondence between bursts of triggered emissions seen at Chistochina and the same bursts of triggered emissions observed by DEMETERBack to article page