Revised comparison and analysis of severe magnetic storm effects measured over Istanbul and Rome

• 發表在: Annals of Geophysics
• 主要作者: Harutyun Agopyan
• 格式: Article
• 語言: 英语
• 出版: Istituto Nazionale di Geofisica e Vulcanologia (INGV) 2009-06-01
• 主題: radio propagation – geomagnetic and ionospheric storm
• 在線閱讀: http://www.annalsofgeophysics.eu/index.php/annals/article/view/4602
• ISSN: 1593-5213; 2037-416X

<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times;">Geomagnetic Storms (GS) and Ionospheric Storms (IS) for high geomagnetic activity conditions are studied in</p> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times;">Istanbul (IST) and in Rome (RO). Further and revised results that led to new interpretations are briefly presented</p> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times;">here following a previous paper on the severe storm effects on the ionosphere over Istanbul. The series of</p> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times;">storms started on 28th October 1968 and went on to 2nd November 1968 with the geomagnetic index Kp reaching</p> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times;">values up to 8. Deviations of the critical frequency of the <em>F</em>2 layer, Δ<em>foF</em>2(%), from monthly medians up to</p> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times;">100% were observed. Power spectral results show here that not only the Diurnal Planetary Waves (PW) of 2.3</p> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times;">day periodicity but also tidal waves with semidiurnal (12h), teridiurnal (8h) and quaterdiurnal (6h) characteristic times are present.</p> <br /> <br />