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First High-speed Video Camera Observations of a Lightning Flash Associated with a Downward Terrestrial Gamma-ray Flash
- Source :
- Geophysical Research Letters, 50, e2023GL102958 (2023)
- Publication Year :
- 2022
-
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.
Details
- Database :
- arXiv
- Journal :
- Geophysical Research Letters, 50, e2023GL102958 (2023)
- Publication Type :
- Report
- Accession number :
- edsarx.2205.05115
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1029/2023GL102958