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Infrasound detection and altitude estimation associated with the December 22, 2020 Yushu fireball
Geoscience Letters ( IF 4 ) Pub Date : 2021-07-23 , DOI: 10.1186/s40562-021-00196-6 Wei Cheng 1, 2 , Pengxiao Teng 1 , Jun Lyu 1 , Yijing Dai 1, 2
Geoscience Letters ( IF 4 ) Pub Date : 2021-07-23 , DOI: 10.1186/s40562-021-00196-6 Wei Cheng 1, 2 , Pengxiao Teng 1 , Jun Lyu 1 , Yijing Dai 1, 2
Affiliation
A large bolide was reported at 23:23:33 UTC on December 22, 2020, at a height of ~ 35.5 km at $$31.9^\circ \mathrm{N}$$ , $$96.2^\circ \mathrm{E}$$ 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 $$43.22\pm 15.51\mathrm{ km}$$ using a ray tracing back-projection algorithm.
更新日期：2021-07-23
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