Sayak Ray , Batakrushna Senapati , Bhaskar Kundu , M. Santosh
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引用次数: 0
Abstract
The atmospheric waves generated from large-scale natural phenomena such as earthquakes, volcanoes, and anthropogenic explosions propagate upward to the upper atmosphere and cause perturbations in the ionosphere. In the present study, we investigate the ionospheric perturbations in terms of total electron content (TEC) signatures induced by the missile/airstrikes over the Ukraine region during the ongoing Russian-Ukrainian conflict, which has been captured through a standalone ground-based Global Navigation Satellite System (GNSS) receiver. We observed an ionospheric electron content change of ∼0.1–0.3 TECU caused by the acoustic wave generated from the missile/air strikes. We also noticed a strong directivity of the ionospheric disturbances over Ukraine, with maximum ionospheric disturbances in the south direction from the epicenter of the events. Further, the ionospheric disturbance's peak-to-peak amplitude was 1.5% of the background electrons, slightly less than the magnitude of volcanic eruptions in the Islands of Japan.
期刊介绍:
The Journal of Atmospheric and Solar-Terrestrial Physics (JASTP) is an international journal concerned with the inter-disciplinary science of the Earth''s atmospheric and space environment, especially the highly varied and highly variable physical phenomena that occur in this natural laboratory and the processes that couple them.
The journal covers the physical processes operating in the troposphere, stratosphere, mesosphere, thermosphere, ionosphere, magnetosphere, the Sun, interplanetary medium, and heliosphere. Phenomena occurring in other "spheres", solar influences on climate, and supporting laboratory measurements are also considered. The journal deals especially with the coupling between the different regions.
Solar flares, coronal mass ejections, and other energetic events on the Sun create interesting and important perturbations in the near-Earth space environment. The physics of such "space weather" is central to the Journal of Atmospheric and Solar-Terrestrial Physics and the journal welcomes papers that lead in the direction of a predictive understanding of the coupled system. Regarding the upper atmosphere, the subjects of aeronomy, geomagnetism and geoelectricity, auroral phenomena, radio wave propagation, and plasma instabilities, are examples within the broad field of solar-terrestrial physics which emphasise the energy exchange between the solar wind, the magnetospheric and ionospheric plasmas, and the neutral gas. In the lower atmosphere, topics covered range from mesoscale to global scale dynamics, to atmospheric electricity, lightning and its effects, and to anthropogenic changes.