Traveling ionospheric disturbances observed by Kharkiv and Millstone Hill incoherent scatter radars near vernal equinox and summer solstice

Electrified Postsunrise Ionospheric Perturbations at Millstone Hill

“…TID amplitude was 15%, larger in the early morning, and visible as low as 125 km altitude. This amplitude is typical at MH (e.g., Galushko et al., 1998; Panasenko et al., 2018) but seems larger than several other observations (e.g., Kirchengast et al., 1996) and smaller than those during geomagnetic storms (e.g., S.‐R. Zhang, Erickson, Zhang, et al., 2017).…”

Large‐Scale Traveling Atmospheric and Ionospheric Disturbances Observed in GUVI With Multi‐Instrument Validations

“…ISR has been used extensively to study both MSTIDs and LSTIDs (Frissell et al., 2022; Kirchengast et al., 1996; Negale et al., 2018; Nicolls et al., 2014; Panasenko et al., 2018). During the time period discussed in this paper, the PFISR was operating in long pulse mode, allowing for retrieval of electron densities, Ne, during the 18–19 January 2013 period.…”

Ionosphere Influenced From Lower-Lying Atmospheric Regions

“…Among them, meteorological systems, solar terminators, and eclipses are of particular interest. Except for the natural oscillations, the anthropogenic wave-like oscillations attributed to explosions can be detected (Panasenko et al, 2018;Huang et al, 2019 and references therein). According to their period and wave velocity, TIDs can be divided into three groups, such as large-scale TIDs (LSTIDs), medium-scale TIDs (MSTIDs), and rarely studied small-scale TIDs (SSTIDs).…”

“…Typical periods of the observed LSTIDs in the ionospheric heights are about 50 min to 3 h with horizontal velocities of 400-1,000 m.s −1 . Details about the TIDs can be found in the work of Hocke and Schlegel (1996) or Panasenko et al (2018).…”