Fig. 3
From: Magnetic ripples observed by Swarm satellites and their enhancement during typhoon activity
LT dependence of the average amplitudes and two-dimensional ionospheric conductivities. The two-dimensional conductivities, Σ yy and Σ xy , are height-integrated from an altitude of 90–450 km at a location in Japan (33°N, 133°E) on April 2, 2015. X and Y indicate magnetic north and east, respectively. Blue, red, and green lines show the average amplitude of the MRs of the parallel, meridional, and zonal component between 30°N–35°N and 130°E–135°E, respectively. Solid purple and dotted purple lines show Σ yy and Σ xy , respectively