SAMPLE VLF SPECTRA/SOUNDS
Tweeks observed at Kagoshima on Dec.7, 1977, 23:50JST (Click the dynamic spectra to hear the sound. Time mark is inclided every 1 second at 880 Hz. ) Whistler atmospherics observed at Kagoshima on Dec.11, 1977, 1950JST (Click the dynamic spectra to hear the sound. Time mark is inclided every 1 second at 880 Hz.) * The dynamic spectra were made by H. Ohya (Chiba University)