Fig. 33
From: Review of the accomplishments of mid-latitude Super Dual Auroral Radar Network (SuperDARN) HF radars
a The BKS LOS velocity as a function of latitude and time. The BKS data along beam 7 are averaged over three range gates and plotted as a function of UT for five sets of gates covering the latitude range of 53.9° N to 57.1° N. b The difference between the first part of each of the first two cycles and the second part. Reproduced from Fig. 3 of Frissell et al. (2011)