Abstract
Studying the relative deviations of the hourly daily values of the critical frequency foF2 from their corresponding monthly median we are lead to define as “disturbed” those days for which the absolute value of the 3-hour average of the relative deviation at least once exceeds 0.3. The relative deviations of foF2 and of the propagation factor M(3000)F2 are evaluated for quiet days in this sense. Furthermore some examples of disturbed ionosphere are examined and their dependence on season, solar activity and location is pointed out.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
