2002/12/05 by É. L. Afraimovich, E. L. Afraimovich, Afraimovich, E. L. +3
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #FOS: Physical sciences #Geomagnetism and Paleomagnetism Studies #Geophysics (physics.geo-ph) #Ionosphere and magnetosphere dynamics #Solar and Space Plasma Dynamics #physics.geo-ph
paper · pdf · doi:10.48550/arxiv.physics/0212021
LaTeX2.09, 23 pages, 10 figures
arxiv created 2002/12/05 · openalex publication_date 2002/12/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate an unusual class of medium-scale traveling ionospheric disturbances (MS TIDs) of the nonwave type, isolated ionospheric disturbances (IIDs) that manifest themselves in total electron content (TEC) variations in the form of single aperiodic negative TEC disturbances of a duration of about 10 min (the total electron content spikes, TECS). It was found that TECS are observed in no more than 1-2 % of the total number of radio paths. We present the results derived from analyzing the dependence of TECS parameters on local time, and on the level of geomagnetic activity. The TECS amplitude exceeds at least one order of magnitude the TEC fluctuation intensity under "background" conditions. To analyze TECS dynamic characteristics the event of 5 October, 2001 was used.