Fig. 9From: 3D tomography of midlatitude sporadic-E in Japan from GNSS-TEC dataHorizontal drifts of Es patches in two cases (Case 4: May 22, 2010, and Case 5: June 9, 2013) above the Kyushu District inferred by comparing the snapshots at the first epoch (a, c) and 15 min later (b, d). At each epoch, we show the map view (left) and the longitudinal profile (right). Black dashed lines indicate the longitudes used for the profilesBack to article page