Fig. 6.From: The STEL induction magnetometer network for observation of high-frequency geomagnetic pulsationsDynamic spectra of the H component of the magnetic field fluctuations at 0.1–32 Hz as observed on February 27, 2009 at the five stations from higher (top) to lower (bottom) latitudes. The unit of power spectral density (PSD) in the color scale is calculated at the peak sensitivity of each station. The local midnight at each station is indicated by a white arrow.Back to article page