Geomagnetic Anomalies in O+ Concentration Considering the Sun Seasonal Position According to the Data from the Complex “RIMS”

摘要

The article presents an analysis of mass spectrometric measurements of the ion composition of the upper atmosphere at altitudes of 810-830 km. Measurements RIMS instruments are installed on the Meteor-M spacecraft No. 1 and No. 2, which were launched in 2009 and 2014. The measurements were carried out by the contact method from January 1, 2016 to January 1, 2017. In this case, a seasonal variation in the concentration of 0+ ions was observed, which was associated with the position of the Sun. In the regions of magnetic anomalies, an increasing in the concentration of 0+ ions was observed for the South Pole and a decreasing for the North Pole. An increasing in the concentration of 0+ ions is also observed in the region of the Brazilian magnetic anomaly. A slight increasing in the concentration of 0+ ions was observed from the shadow side of the Earth at latitude of 45° North America, which can be attributed to the North American magnetic anomaly in the area of the Yellowstone Reserve.