Affiliation:
1. School of Space and Environment, Beihang University
2. Institute of Astronomy and Geophysics, Mongolian Academy of Sciences
3. Institute of Astronomy and Geophysics AS Mongolia
4. Key Laboratory of Space Environment monitoring and Infor-mation Processing of MIIT
5. Pakistan Space and Upper Atmosphere Research Commission
Abstract
Utilizing 1-minute resolution data on the geomagnetic indices SYM-H, AE, solar wind parameters (velocity Vsw and density Np), and z-component Bz of the interplanetary magnetic field (IMF) during solar cycles 23 and 24, we have statistically analyzed the correlations between geomagnetic activity (storms and substorms), Vsw, Np, Bz, and energy coupling functions of solar wind and Earth’s magnetosphere. For the selected 131 CME-driven storms, SYM-H stronger depends on Vsw and B than other parameters, whereas the selected 161 CIR-driven storms have nearly the same dependence on the solar wind electric field, the rate of open magnetic flux dφ/dt, and the reconnection electric field Ekl. Thus, the solar wind electric field and the dayside magnetic reconnection are likely to have different contributions for storms of the two types. During storms of different types, the substorm intensity AE relies mainly on the IMF Bz, rate of open magnetic flux and reconnection electric field.
Publisher
Infra-M Academic Publishing House
Subject
Space and Planetary Science,Atmospheric Science,Geophysics
Reference40 articles.
1. Akasofu S.I. Energy coupling between the solar wind and the magnetosphere. Space Sci. Rev. 1981. Vol. 28. P. 121–190. DOI: 10.1007/BF00218810., Akasofu S.I. Energy coupling between the solar wind and the magnetosphere. Space Sci. Rev. 1981. Vol. 28. P. 121–190. DOI: 10.1007/BF00218810.
2. Alexakis P., Mavromichalaki H. Statistical analysis of interplanetary coronal mass ejections and their geoeffectiveness during the solar cycles 23 and 24. Astrophys Space Sci. 2019. Vol. 364, iss. 11. Article id. 187. 14 p. DOI: 10.1007/s10509-019-3677-y., Alexakis P., Mavromichalaki H. Statistical analysis of interplanetary coronal mass ejections and their geoeffectiveness during the solar cycles 23 and 24. Astrophys Space Sci. 2019. Vol. 364, iss. 11. Article id. 187. 14 p. DOI: 10.1007/s10509-019-3677-y.
3. Badruddin B., Aslam O.P.M., Derouich M. Study of the development of geomagnetic storms in the magnetosphere using solar wind data of three different time resolutions. Astrophys. Space Sci. 2022. Vol. 367, iss. 1. Article id. 10. DOI: 10.1007/ s10509-021-04030-5., Badruddin B., Aslam O.P.M., Derouich M. Study of the development of geomagnetic storms in the magnetosphere using solar wind data of three different time resolutions. Astrophys. Space Sci. 2022. Vol. 367, iss. 1. Article id. 10. DOI: 10.1007/ s10509-021-04030-5.
4. Baker D.N., Pulkkinen T.I., Angelopoulos V., et al. Neutral line model of substorms: Past results and present view. J. Geophys. Res. 1996. Vol. 101, iss. A6. P. 12975–13010. DOI: 10.1029/95JA03753., Baker D.N., Pulkkinen T.I., Angelopoulos V., et al. Neutral line model of substorms: Past results and present view. J. Geophys. Res. 1996. Vol. 101, iss. A6. P. 12975–13010. DOI: 10.1029/95JA03753.
5. Borovsky J.E., Denton M.H. Differences between CME-driven storms and CIR-driven storms. J. Geophys. Res. 2006. Vol. 111, iss. A7. CiteID A07S08. DOI: 10.1029/2005JA011447., Borovsky J.E., Denton M.H. Differences between CME-driven storms and CIR-driven storms. J. Geophys. Res. 2006. Vol. 111, iss. A7. CiteID A07S08. DOI: 10.1029/2005JA011447.