Fig 2From: Latitudinal dependence on the frequency of Pi2 pulsations near the plasmapause using THEMIS satellites and Asian-Oceanian SuperDARN radars a Auroral electrojet AL index, b Honolulu (HON) data, and c Memanbetsu (MMB) data for the H component from 09:00 to 10:00 UT on August 19, 2010. The vertical dashed lines indicate the substorm onset at 09:12 UT on August 19, 2010Back to article page