Geomagnetic pulsations associated with solar тerminators near Kharkiv city. 1. Spectral analysis

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Space and Atmospheric Physics
1Chernogor, LF, 2Shamota, MA
1V.N. Karazin National University of Kharkiv, Kharkiv, Ukraine
2V.N. Karazin Kharkiv National University, Kharkiv, Ukraine
Kosm. nauka tehnol. 2009, 15 ;(5):43-51
https://doi.org/10.15407/knit2009.05.043
Publication Language: Russian
Abstract: 
The database of geomagnetic pulsations associated with the dawn and dusk terminators near Kharkiv city during the years 2002–2008 in the 1–1000 s period interval was collected and analyzed. The spectral analysis revealed quasi-periodic disturbances caused by the terminators and produced disturbance parameters. The disturbance periods turn out to be in the interval from 9 to 11 min with durations of 45–55 min and amplitudes of 3–5 n T. The response to the dawn and to the dusk terminators shows a delay of 30–40, 80–90 min and of 60–80 min, respectively.
Keywords: disturbance periods, geomagnetic pulsations, solar тerminator
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