The Responses of Ionospheric Conductivities on the Mid-Latitudes to Changes in the B-Z Component of Interplanetary Magnetic Field

TİMOÇİN E., YEŞİL A., ÜNAL İ.

WIRELESS PERSONAL COMMUNICATIONS, vol.114, no.4, pp.2923-2932, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 114 Issue: 4
  • Publication Date: 2020
  • Doi Number: 10.1007/s11277-020-07510-z
  • Journal Name: WIRELESS PERSONAL COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Applied Science & Technology Source, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC
  • Page Numbers: pp.2923-2932
  • Keywords: Ionosphere, Ionospheric conductivities, Interplanetary magnetic field, Superposed epoch analysis, ALIGNED CURRENTS, EQUATORIAL, WAVES, PLASMA, REGION, MAGNETOSPHERE, ELECTROJET, DEPENDENCE, PATTERN, SOLAR
  • Inonu University Affiliated: Yes

Abstract

In this study, we investigate the response of the ionospheric conductivities on the middle latitudes to the southward and northward turnings of the B-Z component of the interplanetary magnetic field (IMF). For this purpose, parallel conductivity (sigma(0)), Pedersen conductivity (sigma(1)), Hall conductivity (sigma(2)) data calculated for Rome (41.8 degrees N, 12.5 degrees E); Juliusruh (54.6 degrees N, 13.4 degrees E); Uppsala (59.8 degrees N, 17.6 degrees E); Lycksele (64.7 degrees N, 18.8 degrees E) during the 22nd solar cycle are examined. The superposed epoch analysis method is used to investigate the response of the conductivities to the southward and northward turnings of the B-Z component. From the analysis results it is observed that the turnings in the B-Z component of the IMF have significant effect on all conductivities. At the event moment (zero time), the southward turnings of the B-Z component increases all conductivities while the northward turnings of the B-Z component decreases all conductivities. The effect on the conductivities of the changes in the B-Z component occurs before about 18 h from the event moment, and this effect disappears after about 24 h from the event moment. Furthermore, all of ionospheric conductivities shows or does less reaction to changes in the B-Z component as latitude increase.