HAARP Zeit Frequenz Spektrogram ULF 1 - 22 January.wmv

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Uploaded by on Jan 23, 2010

The image below is a time-frequency spectrogram, which shows the frequency content of signals recorded by the HAARP Induction Magnetometer. This instrument, provided by the University of Tokyo, measures temporal variations in the geomagnetic field in the ULF (ultra-low frequency) range of 0-5 Hz. The spectrogram images are produced by computing the PSD (power spectral density) of successive 102.4-second segments of timeseries data, and plotting these spectra as color/intensity slices along a 24-hour scale.

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http://137.229.36.30/cgi-bin/scmag/disp-scmag.cgi?

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