This work investigates the relationship between cosmic ray intensity (CRI) and key interplanetary and geomagnetic parameters during both disturbed (November 1–6, 2021) and quiet (November 7–12, 2021) periods. Four neutron monitor stations, namely BKSN, DOMC, JUNG, and MXCO, are employed to analyze the behavior of CRI in response to variations in southward interplanetary magnetic field (IMF Bz), interplanetary electric field (IEF Ey), solar wind speed (Vsw), and geomagnetic indices, including Kp and Dst. During the storm period, time series plots reveal significant Forbush Decreases (FD) in CRI at all stations. These FDs exhibit distinct characteristics, with the most substantial reduction observed at high-latitude stations and the least at low-latitude stations. Notably, the Mexico station, situated in the low-latitude region, records higher neutron counts for both disturbed and quiet periods compared to the middle (BKSN and JUNG) and high-latitude (DOMC) stations. Cross-correlation analysis is employed to examine the relationships between CRI and the aforementioned parameters. Results indicate that during the geomagnetically disturbed period, CRI exhibits negative correlations with IMF Bz, Vsw, and Kp index, while demonstrating positive correlations with Dst and IEF Ey. The strongest correlation is observed between CRI and Dst, suggesting that it can affect variations in cosmic rays measured on Earth, during the geomagnetic storms. In contrast, during the quiet period, significantly weaker correlation was observed than the disturbed period. However, at the JUNG station, CRI displays good correlations with all considered parameters even during the quiet period. The station-specific correlations signifies the importance of geographic location in shaping the response of CRI to external influences.
Cross-Correlation Analysis of Cosmic Ray Intensity with Interplanetary and Geomagnetic Parameters during Disturbed and Quiet Periods
Cosmic Res
Cosmic Research ; 62 , 1 ; 34-41
2024-02-01
8 pages
Article (Journal)
Electronic Resource
English
cosmic ray intensity , solar wind parameters , interplanetary magnetic field , disturbance storm time index , disturbed and quiet period Physics , Astronomy, Astrophysics and Cosmology , Astrophysics and Astroparticles , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) , Physics and Astronomy
Spread-F during Quiet and Disturbed Periods at Midlatitudes
British Library Conference Proceedings | 1997
|Spread-F during Quiet and Disturbed Periods at Midlatitudes
Online Contents | 1997
|The Interplanetary Causes of Magnetic Storms, Substorms and Geomagnetic Quiet
British Library Conference Proceedings | 2001
|