Infrasound detection and altitude estimation associated with the December 22, 2020 Yushu fireball

A large bolide was reported at 23:23:33 UTC on December 22, 2020, at a height of ~ 35.5 km at 31 . 9 ∘ N , 96 . 2 ∘ E in Yushu, Qinghai Province, China. It is the largest fireball observed in China on record with a TNT equivalent of 9.5 kilotons. Infrasound signals were detected by a four-element in...

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Bibliographic Details
Published in:Geoscience letters 2021-07, Vol.8 (1), p.1-6, Article 26
Main Authors: Cheng, Wei, Teng, Pengxiao, Lyu, Jun, Dai, Yijing
Format: Article
Language:English
Subjects:
Algorithms
Altitude
Atmospheric Sciences
Biogeosciences
Earth and Environmental Science
Earth Sciences
Fireball
Fireballs
Geophysics/Geodesy
Infrasound
Oceanography
Planetology
Ray tracing
Ray tracing back-projection algorithm
Research Letter
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Summary:A large bolide was reported at 23:23:33 UTC on December 22, 2020, at a height of ~ 35.5 km at 31 . 9 ∘ N , 96 . 2 ∘ E in Yushu, Qinghai Province, China. It is the largest fireball observed in China on record with a TNT equivalent of 9.5 kilotons. Infrasound signals were detected by a four-element infrasound array deployed in Yunnan Province, China. The parameters of this event were obtained using the progressive multi-channel correlation method. The altitude of this event was estimated to be 43.22 ± 15.51 km using a ray tracing back-projection algorithm.
ISSN:2196-4092
2196-4092
DOI:10.1186/s40562-021-00196-6