Figure 2From: Airglow-imaging observation of plasma bubble disappearance at geomagnetically conjugate pointsEast-west cross sections (keograms) of 630-nm airglow images obtained at (a) Sata and (b) Darwin on 8 August 2002. The cross sections are taken at latitudes of 31.0°N in the northern hemisphere. The images for Darwin are mapped to the northern hemisphere along the geomagnetic field line.Back to article page