Fig. 2
From: Near-field TEC response to the main shock of the 2008 Wenchuan earthquake
The filtered TEC series dI(t) for LUZH-14 (a), LUZH-22 (b) located in the southeast region from the epicenter; black, thin, and thick gray lines—11, 12 and 13 May, respectively. Time moment tmax of a maximum deviation of the dI(t) is marked by thick dot. Panel (e) demonstrate the reduction of amplitude of responses in the northwest (DLHA-05) and northeast (XIAA-12) direction from epicenter. On the panels (c) and (f) the black line shows the accumulated TEC series dIΣ(t), obtained on the experimental stage of processing for the plane and spherical wavefront, respectively. The thick gray line on the panels (c) and marks the modeled dIΣ(t) for which the maximum of function C was reached. The moment of the main shock of the Wenchuan earthquake is marked by shaded triangle.