1Key Laboratory of Earth and Planetary Physics, Institute of Geology and
Geophysics, Chinese Academy of Sciences, Beijing, China
2Beijing National Observatory of Space Environment, Institute of Geology
and Geophysics, Chinese Academy of Sciences, Beijing, China
3National Satellite Meteorological Center, China Meteorological
Administration, Beijing, China
Received: 25 Jun 2016 – Revised: 26 Oct 2016 – Accepted: 31 Oct 2016 – Published: 17 Nov 2016
Abstract. We use the Global Positioning System (GPS) network in northwest China and central Asia to monitor traveling ionospheric disturbances (TIDs), which were possibly excited by the large meteorite blast over Chelyabinsk, Russia, on 15 February 2013. Two TIDs were observed. The first TID was observed 13 min after the blast within a range of 270–600 km from the blast site. It propagated radially from the blast site with a mean velocity and period of 369 m s−1 and 12 min, respectively. The second TID was found in northwest China, 1.5 h after the time of the blast, at ∼ 2500–3100 km from the blast site. This latter TID propagated southeastward with a velocity and period of 410 m s−1 and 23 min, respectively. Severe dissipation of the perturbation total electronic content (TEC) amplitude was observed. Any TIDs propagating in a global range was not found after the meteorite blast. Features of TIDs were compared with those excited by early nuclear explosion tests. It is inferred from our analysis that the energy release of the Chelyabinsk meteorite blast may not be large enough to excite such ionospheric disturbances in a global range as some nuclear explosions did.
Ding, F., Mao, T., Hu, L., Ning, B., Wan, W., and Wang, Y.: GPS network observation of traveling ionospheric disturbances following the Chelyabinsk meteorite blast, Ann. Geophys., 34, 1045-1051, doi:10.5194/angeo-34-1045-2016, 2016.