Standard radio wave phase-amplitude variation data (Zao station)

2012-12-12 12:00:00

Amplitude and phase time series of low frequency standard radio transmitter signals at 40.0(JJY), 60.0(JJY), and 67.5kHz(BPC) received at the Zao observaroty (Miyagi, Japan) of Tohoku University. Variations in the phase and amplitude reflect changes of the ionization state in the lower ionosphere which is caused by energetic electron precipitation from inner magnetosphere (radiation belt), solar x-rays, lightning dischanges, and so on.

Public data still includes some instrumental drifts and artifical noises. It is recommended for you to contact to PIs before they start detailed analyses and publications. Entry to publication list: When your paper is accepted, or when you make a presentation at a conference on your result, please let us know by sending email to "tsuchiya(at)pparc.gp.tohoku.ac.jp".

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CDF

38.104

38.104

140.530

140.530

Radio amplitude

Amplitude time series of standard radio signals at at 40.0 (JJY), 60.0(JJY), and 67.5kHz (BPC)

dB

Radio phase

Phase time series of standard radio signals at at 40.0 (JJY), 60.0(JJY), and 67.5kHz (BPC)

degree

0

360

Time

Observed Time

Julian day