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

Agopyan H.

ANNALS OF GEOPHYSICS, cilt.52, sa.5, ss.453-458, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 52 Sayı: 5
  • Basım Tarihi: 2009
  • Dergi Adı: ANNALS OF GEOPHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.453-458
  • İstanbul Üniversitesi Adresli: Evet

Özet

Geomagnetic Storms (GS) and Ionospheric Storms (IS) for high geomagnetic activity conditions are studied in Istanbul (IST) and in Rome (RO). Further and revised results that led to new interpretations are briefly presented here following a previous paper on the severe storm effects on the ionosphere over Istanbul. The series of storms started on 28th October 1968 and went on to 2nd November 1968 with the geomagnetic index Kp reaching Values up to 8. Deviations of the critical frequency of the F2 layer, Delta foF2(%), from monthly medians up to 100% were observed. Power spectral results Show here that not only the Diurnal Planetary Waves (PW) of 2.3 day periodicity but also tidal waves with semidiurnal (12h), teridiurnal (8h) and quaterdiurnal (6h) characteristic times are present.