Open AccessMagnetospheric response of two types in PSc geomagnetic pulsations to interaction with interplanetary shock waves
Author(s) -
V. A. Parkhomov,
Vladimir Parhomov,
N. L. Borodkova,
Н. Л. Бородкова,
A. G. Iakhnin,
A. G. Yahnin,
Tero Raita,
Tero Raita,
Б. Цэгмэд,
Б. Цэгмэд,
Сергей Хомутов,
Sergey Khomutov,
Александр Пашинин,
Александр Пашинин,
Виталий Чиликин,
Vitaliy Chilikin,
Алексей Мочалов,
A. A. Mochalov
Publication year - 2018
Publication title -
solnečno-zemnaâ fizika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.11
H-Index - 2
ISSN - 2412-4737
DOI - 10.12737/szf-43201808
Subject(s) - physics , interplanetary spaceflight , ionosphere , earth's magnetic field , magnetosphere , impulse (physics) , geophysics , shock wave , broadband , shock (circulatory) , magnetometer , magnetic field , computational physics , optics , solar wind , mechanics , classical mechanics , medicine , quantum mechanics
Using the June 22, 2015 event as an example, we present new data confirming the presence of a precursor of the sudden magnetic impulse caused by a powerful interplanetary shock wave (ISW). The precursor 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.