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Earth, Planets and Space
Figure 5 | Earth, Planets and Space

Figure 5

From: The propagation of ULF waves from the Earth's foreshock region to ground: the case study of 15 February 2009

Figure 5

The dynamic R at ground stations. The dynamic signal-to-noise ratio R (color scale) at ground stations on 15 February 2009, in the H and D horizontal components of the geomagnetic field. In each row, the green lines indicate the highest (fh) and lowest frequency (fl) in correspondence to the boundaries of the favorable generation region, while the blue line shows the predicted frequency at the Cluster 1 satellite position.

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