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Earth, Planets and Space
Figure 1 | Earth, Planets and Space

Figure 1

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

Figure 1

Cluster 1 position in the GSE X-Y and X-Z planes and IMF and SW data. Upper panels: the Cluster 1 satellite orbit on 15 February 2009 projected in the X-Y (left) and Y-Z (right) plane in the GSE coordinate system, together with the bow shock and magnetopause profiles (dashed gray lines). Lower panels from top to bottom: the 20-min running averages of SW speed VSW, plasma number density n, and anisotropy temperature ratio T║/T┴, and the 4-s IMF components B x , B y , and B z . Vertical red dashed lines (c and d labels) mark the transition region from upstream to downstream conditions (in the upper panels, the red asterisk indicates the Cluster position), while the vertical blue dashed lines (a and b labels) delimit the time interval analyzed by the Wave Telescope technique (in the upper panels, the blue asterisk indicates the Cluster position).

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