Articles | Volume 37, issue 4
Regular paper
21 Aug 2019
Regular paper |  | 21 Aug 2019

Observation of seasonal asymmetry in the range spread F occurrence at different longitudes during low and moderate solar activity

Abimbola O. Afolayan, Mandeep Jit Singh, Mardina Abdullah, Suhaila M. Buhari, Tatsuhiro Yokoyama, and Pornchai Supnithi


Total article views: 1,766 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
1,065 647 54 1,766 46 49
  • HTML: 1,065
  • PDF: 647
  • XML: 54
  • Total: 1,766
  • BibTeX: 46
  • EndNote: 49
Views and downloads (calculated since 27 Feb 2019)
Cumulative views and downloads (calculated since 27 Feb 2019)

Viewed (geographical distribution)

Total article views: 1,766 (including HTML, PDF, and XML) Thereof 1,578 with geography defined and 188 with unknown origin.
Country # Views %
  • 1


Latest update: 14 Jun 2024
Short summary
The equatorial spread F (ESF) is a nighttime phenomenon that can have a deleterious effect on the radio communication system. We investigated the parameters influencing the seasonal morphology of the range type spread F (RSF) using ionosonde data from different longitude sectors. The observed RSF occurrence features showed distinct patterns across these sectors, including seasonal asymmetry. This asymmetry was attributed to the probable effect of the zonal wind reversal and gravity waves.