EGU24-20763, updated on 11 Mar 2024
https://doi.org/10.5194/egusphere-egu24-20763
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Low-frequency sferics associated with consecutive Terrestrial Gamma-ray Flashes 

Hongbo Zhang1, Xiushu Qie1, and Gaopeng Lu2
Hongbo Zhang et al.
  • 1Institute of Atmospheric Physics, Chinese Academy of Sciences, Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Beijing, China (zhanghb@mail.iap.ac.cn)
  • 2School of Earth and Space Science, University of Science and Technology of China

Terrestrial Gamma-ray Flashes (TGFs) are brief and intense emissions of hard X-rays and gamma-rays originating inside thunderstorms. It has been observed that TGF occurs much less frequently than lightning. However, the TGF generation conditions and mechanism of are not clear, such as why just the TGF-associated lightning produces TGF while others not. Consecutive TGFs detected by space-based platform are usually several seconds to 1-2 minutes apart, and they come from same meteorological environment and even from the same storm cells. This provides a possibility to understand the relationship between lightning and TGF. Based on Fermi high-energy photons observations and the ground low-frequency (LF) lightning sferics measurements, more than 10 pairs of consecutive TGFs with synchronous LF lightning waveform are analyzed. Preliminary results show that the sferics of each TGF pairs are almost same, while they vary with different pairs. More details will be shown. In addition, some TGFs detected by ASIM and the associated lightning will also be introduced.

How to cite: Zhang, H., Qie, X., and Lu, G.: Low-frequency sferics associated with consecutive Terrestrial Gamma-ray Flashes , EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-20763, https://doi.org/10.5194/egusphere-egu24-20763, 2024.