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arXiv · 2205.05115

First High-speed Video Camera Observations of a Lightning Flash Associated with a Downward Terrestrial Gamma-ray Flash

R. U. Abbasi·M. M. F. Saba·J. W. Belz·P. R. Krehbiel·W. Rison·N. Kieu·D. R. da Silva·Dan Rodeheffer·M. A. Stanley·J. Remington·J. Mazich·R. LeVon·K. Smout·A. Petrizze·T. Abu-Zayyad·M. Allen·Y. Arai·R. Arimura·E. Barcikowski·D. R. Bergman·S. A. Blake·I. Buckland·B. G. Cheon·M. Chikawa·T. Fujii·K. Fujisue·K. Fujita·R. Fujiwara·M. Fukushima·G. Furlich·N. Globus·R. Gonzalez·W. Hanlon·N. Hayashida·H. He·K. Hibino·R. Higuchi·K. Honda·D. Ikeda·N. Inoue·T. Ishii·H. Ito·D. Ivanov·H. Iwakura·A. Iwasaki·H. M. Jeong·S. Jeong·C. C. H. Jui·K. Kadota·F. Kakimoto·O. Kalashev·K. Kasahara·S. Kasami·S. Kawakami·K. Kawata·I. Kharuk·E. Kido·H. B. Kim·J. H. Kim·S. W. Kim·Y. Kimura·I. Komae·Y. Kubota·V. Kuzmin·M. Kuznetsov·Y. J. Kwon·K. H. Lee·B. Lubsandorzhiev·J. P. Lundquist·H. Matsumiya·T. Matsuyama·J. N. Matthews·R. Mayta·I. Myers·S. Nagataki·K. Nakai·R. Nakamura·T. Nakamura·Y. Nakamura·A. Nakazawa·E. Nishio·T. Nonaka·H. Oda·S. Ogio·M. Ohnishi·H. Ohoka·Y. Oku·T. Okuda·Y. Omura·M. Ono·A. Oshima·S. Ozawa·I. H. Park·M. Potts·M. S. Pshirkov·D. C. Rodriguez·C. Rott·G. I. Rubtsov·D. Ryu·H. Sagawa
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Abstract

In this paper, we present the first high-speed video observation of a cloud-to-ground lightning flash and its associated downward-directed Terrestrial Gamma-ray Flash (TGF). The optical emission of the event was observed by a high-speed video camera running at 40,000 frames per second in conjunction with the Telescope Array Surface Detector, Lightning Mapping Array, interferometer, electric-field fast antenna, and the National Lightning Detection Network. The cloud-to-ground flash associated with the observed TGF was formed by a fast downward leader followed by a very intense return stroke peak current of -154 kA. The TGF occurred while the downward leader was below cloud base, and even when it was halfway in its propagation to ground. The suite of gamma-ray and lightning instruments, timing resolution, and source proximity offer us detailed information and therefore a unique look at the TGF phenomena.

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R. U. Abbasi, M. M. F. Saba, J. W. Belz, P. R. Krehbiel, W. Rison, N. Kieu, D. R. da Silva, Dan Rodeheffer, M. A. Stanley, J. Remington, J. Mazich, R. LeVon, K. Smout, A. Petrizze, T. Abu-Zayyad, M. Allen, Y. Arai, R. Arimura, E. Barcikowski, D. R. Bergman, S. A. Blake, I. Buckland, B. G. Cheon, M. Chikawa, T. Fujii, K. Fujisue, K. Fujita, R. Fujiwara, M. Fukushima, G. Furlich, N. Globus, R. Gonzalez, W. Hanlon, N. Hayashida, H. He, K. Hibino, R. Higuchi, K. Honda, D. Ikeda, N. Inoue, T. Ishii, H. Ito, D. Ivanov, H. Iwakura, A. Iwasaki, H. M. Jeong, S. Jeong, C. C. H. Jui, K. Kadota, F. Kakimoto, O. Kalashev, K. Kasahara, S. Kasami, S. Kawakami, K. Kawata, I. Kharuk, E. Kido, H. B. Kim, J. H. Kim, S. W. Kim, Y. Kimura, I. Komae, Y. Kubota, V. Kuzmin, M. Kuznetsov, Y. J. Kwon, K. H. Lee, B. Lubsandorzhiev, J. P. Lundquist, H. Matsumiya, T. Matsuyama, J. N. Matthews, R. Mayta, I. Myers, S. Nagataki, K. Nakai, R. Nakamura, T. Nakamura, Y. Nakamura, A. Nakazawa, E. Nishio, T. Nonaka, H. Oda, S. Ogio, M. Ohnishi, H. Ohoka, Y. Oku, T. Okuda, Y. Omura, M. Ono, A. Oshima, S. Ozawa, I. H. Park, M. Potts, M. S. Pshirkov, D. C. Rodriguez, C. Rott, G. I. Rubtsov, D. Ryu, H. Sagawa. 2022-05-10. First High-speed Video Camera Observations of a Lightning Flash Associated with a Downward Terrestrial Gamma-ray Flash. https://doi.org/10.1029/2023gl102958

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