Последние новости
Полезные ссылки
Сообщение о землетрясении
Если Вы ощутили землетрясение, пожалуйста, сообщите о нёмMagnetospheric response of two types in PSc geomagnetic pulsations to interaction with interplanetary shock waves
- Baikal State University, Irkutsk, Russia
- Space Research Institute RAS, Moscow, Russia
- Polar Geophysical Institute RAS, Apatity, Russia
- Sodankylä Geophysics Observatory, Sodankylä, Finland
- Institute of Astronomy and Geophysics AS Mongolia, Ulaanbaatar, Mongolia
- Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS, Paratunka, Kamchatka, Russia
- Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, Russia
Using the June 22, 2015 event as an ex-ample, we present new data confirming the presence of a precursor of the sudden magnetic impulse caused by a powerful interplanetary shock wave (ISW). The precur-sor in the form of a train of oscillations (broadband pulse) with a falling frequency in the range 0.25÷11 Hz with a duration of ~20 s, which had a spectral resonance structure, was recorded globally by a network of induc-tion magnetometers at 18:33:27 UT. No significant phase delays of the signals were detected in four fre-quency bands at widely spaced observatories. It is sug-gested that the impulse can be excited in the Earth – ionosphere waveguide by a pulsed electric field which occurs in the ionosphere due to the short-term impact of ISW on the magnetosphere.
Solar-Terrestrial Physics. - 2018. – v.4, no.3. - P. 52–66; DOI - 10.12737/stp-43201808