The impact of intense fluxes of energetic protons on the low-latitude ionosphere

Alla Suvorova, Alexei Dmitriev

Research output: Contribution to journalConference articlepeer-review


Experiments on board low-Earth orbit satellites show that energetic particles (tens of keV) of the Earth's radiation belt can penetrate to the equatorial ionosphere. Impact of the energetic particles on the upper atmosphere and ionosphere was studied for the case of the geomagnetic storm on 22 July 2009. We present changes of local ion concentration in the low-latitude ionosphere at night measured by the C/NOFS satellite at heights 400-800 km during the magnetic storm and quiet days. The ionospheric density during the storm was compared with a simultaneous observation of enhancements of 30-80 keV proton fluxes measured by the NOAA/POES satellites near the equator at height ∼850 km. We suggest that ionospheric irregularities at night can be caused by effect of energetic protons.

Original languageEnglish
Article number01011
JournalE3S Web of Conferences
StatePublished - 16 Oct 2020
Event11th International Conference �Solar-Terrestrial Relations and Physics of Earthquake Precursors�, STRPEP 2020 - Paratunka, Russian Federation
Duration: 22 Sep 202025 Sep 2020


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