131842.fig.0011a
(a)
131842.fig.0011b
(b)
Figure 11: (a): 2D distribution of ion density obtained on board DEMETER satellite over the epicenter of the Sumatra 28 March 2005 M8.7 earthquake obtained for the night-time (22LT) on March 22 2009. (b): the latitudinal variations of the ion density for several night-time passes of DEMTER satellite over the area of preparation of the Sumatra 28 March 2005 M8.7 earthquake during one week before the seismic shock.