Disturbances in Geospace Associated with the Chelyabinsk Meteorite Passage

Abstract

Observations of disturbances in the geomagnetic field in the 1÷1000 s period range and in the lower and upper ionosphere that followed the Chelyabinsk meteorite passage and explosion are presented. The effects in the vicinity of the Chelyabinsk meteorite path were studied through the variations in the total electron content recorded by the GPS satellites. Ionospheric observations at a distance of ~ 2000 ÷ 3000 km were made using ionosonde data and the parameters of 66 2/3 kHz radio signal along the Moscow–Kharkiv path. The manifestation of both acoustic and gravitation waves that followed the meteorite explosion were detected. Appreciable variations in the geomagnetic field were not revealed (1÷1000 s period).