FIGURE 4. The H-component of ELF waves associated with the jets shown in Figs 2 and 3.
From the following article:
Gigantic jets between a thundercloud and the ionosphere
H. T. Su, R. R. Hsu, A. B. Chen, Y. C. Wang, W. S. Hsiao, W. C. Lai, L. C. Lee, M. Sato and H. Fukunishi
Nature 423, 974-976(26 June 2003)
doi:10.1038/nature01759
The ELF transients were recorded at Onagowa (38.4° N, 141.5° E), Japan, on 22 July 2002.
