Figure 3From: Global and frequent appearance of small spatial scale field-aligned currents possibly driven by the lower atmospheric phenomena as observed by the CHAMP satellite in middle and low latitudesMagnetic fluctuations along the orbits on the dayside and nightside. A typical example of the three components of the magnetic fluctuations in the LMG coordinates (upper three panels), and their dynamic spectra (middle and lower panels) versus period around a few tens of seconds along the orbits at middle and low latitudes on the dayside (left) and on the nightside (right).Back to article page