Geomagnetic activity during St. Patrick's Day storm inferred from global and local indicators

Abstract

In this research, the comparison between the results of geomagnetic activity monitoring using the new local indicators of geomagnetic activity and the traditional geomagnetic indices for geomagnetic activity analysis is made for the period of the strongest geomagnetic disturbance of the current solar cycle -the St. Patrick's Day storm (17-18 March 2015).The results of the research demonstrated that the classification of magnetic activity using the mentioned indicators does not contradict the classical methods. The local indicators, applied to recognition of disturbances in the magnetic observatory data, seem an effective tool for geomagnetic activity analysis, as they reveal the characteristic features of geomagnetic disturbances typical for the observatory latitudinal location and show agreement the conventional geomagnetic disturbance distribution and its evolution during a magnetic storm. KEYWORDS: Geomagnetic storm; geomagnetic activity; local geomagnetic activity indicators; discrete mathematical analysis.

A Multiscale Approach to Geomagnetic Storm Morphology Analysis Based on DMA Activity Measures

“…The analyzed storms are listed in Table 1. These storms are not the strongest in the mentioned cycles, as we did not analyze some of the most extreme and well-studied events, such as the storm on 20-24 November 2003, or the St. Patrick's Day storm on 17-18 March 2015 [21] that appeared to be the most intense geomagnetic storm in the 24th cycle (Dst index ≤ −230 nT).…”

A combined analysis of geomagnetic data and cosmic ray secondaries for the September 2017 space weather event studies

“…Last visited: 12.03.2018); a similar accident occurred after the storm driven by the X9.0-class solar flare in 2006. Nowadays, thorough and multifactor space weather monitoring is required to prevent the damages from the destructive space weather impact on the technological systems on the Earth [Gvishiani et al, 2016a[Gvishiani et al, , 2016b. To take into consideration these geomagnetic storm aspects, the remainder of the paper is organized as follows.…”

National Report for the IAGA of the IUGG 2015–2018

“…The method makes it possible to isolate synchronous geomagnetic disturbances preceding magnetic storms (from high latitudes to the equator), which correlate with fluctuations of the interplanetary magnetic field and increases in auroral indices of geomagnetic activity. -2018-No. 36 -Pp.…”

“…In the future, the new magnetic station will be expanded to a full-fledged observatory, which will take its place in the international network of geomagnetic observations. Khomutov S., Sapunov V., Denisov A., Savelyev D., Babakhanov I. Overhauser vector magnetometer POS-4: Results of continuous measurements during 2015-2016at geophysical observatory "Paratunka" of IKIR FEB RAS, Kamchatka, Russia // E3S Web Conf. -2016.…”