Relationship of solar activity with magnetosphere and ionosphere disturbance during Coronal Mass Ejection (CME) Event on September 6, 2017

Abstract

This study aims to determine the magnitude of the disturbance due to CME on September 6, 2017, in the magnetosphere and ionosphere, then compare its effect at high, middle, and low latitudes. The data used are the daily variation of the H component geomagnetic and the ionogram, representing low latitude. Geomagnetic storms are indicated by the intensity of the H component of the earth’s magnetic field experiencing a very significant decrease reaching -250 nT, while ionosphere storms are indicated by an increase in the critical frequency the F2 layer by 14.1 MHz. As a comparison at each latitude, the magnitude of geomagnetic disturbance is represented by the K index. High latitudes have a K index greater than those at middle and low latitudes. Low latitude produces a smaller K index among other latitudes whose magnitude has strengthened the Dst index. The K index at high latitudes is 9, the K index at middle latitudes and low latitudes is 7. Based on the K index values at all latitudes, the northern hemisphere’s high latitudes are categorized as extreme storms, and the northern hemisphere mid-latitudes and low latitudes are categorized as strong storms.