We examined the Schumann resonance (SR) at low-latitude station KUJ by comparing with solar X-ray flux and solar proton flux at a geostationary orbit. For intense solar activity in October-November 2003, the reaction of the SR frequency to X-ray enhancement and SPEs was different. The SR frequency in H component increased at the time of the Xray enhancement. The response of SR seems to be caused by the increase of the electron density in the ionospheric D region which ionized by the enhanced solar X-ray flux. In the case of the SPEs, the SR frequency in D component decreased with enhancement of solar proton flux. We suggest that the SPEs caused the decrease of altitude on the ionopheric D region at high-latitude region, and the SR frequency decreased.
|ジャーナル||E3S Web of Conferences|
|出版ステータス||出版済み - 11月 7 2018|
|イベント||9th International Conference "Solar-Terrestrial Relations and Physics of Earthquake Precursors", STRPEP 2018 - Paratunka, Kamchatka Region, ロシア|
継続期間: 10月 17 2018 → 10月 21 2018
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