期刊
SCIENCE
卷 367, 期 6474, 页码 183-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aax3872
关键词
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资金
- ESA and national grants of Denmark, Norway, and Spain
- ESA PRODEX [C 4000115884, 4000123438]
- ASIM Science Data Centre (Bergen)
- ESA Topical Team [4200019920/06/NL/VJ]
- European Commission, Innovative Training Network SAINT [722337-SAINT]
- European Research Council [AdG-FP7/2007-2013: n 320839, 223252/F50, 208028/F50 (CoE/BCSS)]
- Ministerio Ciencia, Innovacion y Universidades grant [ESP 2017-86263-C4]
Terrestrial gamma-ray flashes (TGFs) are transient gamma-ray emissions from thunderstorms, generated by electrons accelerated to relativistic energies in electric fields. Elves are ultraviolet and optical emissions excited in the lower ionosphere by electromagnetic waves radiated from lightning current pulses. We observed a TGF and an associated elve using the Atmosphere-Space Interactions Monitor on the International Space Station. The TGF occurred at the onset of a lightning current pulse that generated an elve, in the early stage of a lightning flash. Our measurements suggest that the current onset is fast and has a high amplitude-a prerequisite for elves-and that the TGF is generated in the electric fields associated with the lightning leader.
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