Spectra of the geomagnetic field diurnal variations

• Published in: Geofizičeskij žurnal Vol. 41; no. 5
• Main Authors: I. I. Rokityansky, A. V. Tereshyn
• Format: Journal Article
• Language: English
• Published: Subbotin Institute of Geophysics of the National Academy of Sciences of Ukraine 15.11.2019
• Subjects: absolute motion; diurnal geomagnetic variations; harmonics of diurnal variations

Spectral analysis of the geomagnetic field time series with the discreteness of 60 s (Intermagnet data) and a duration of, for example, 1 year (31×106 s) yields an average-annual amplitude spectrum over periods from approximately 500 s to 5×106 s. The spectrum consists of the continuous part (contin...