Fig. 2From: Different hydraulic responses to the 2008 Wenchuan and 2011 Tohoku earthquakes in two adjacent far-field wells: the effect of shales on aquifer lithologyOriginal water-level records of the two wells for the 2008 M w 7.9 Wenchuan (a) and the 2011 M w 9.0 Tohoku (b) earthquakes, both with resolvable tidal responses. The water level is the distance between the wellhead and the water surface inside the well. The dotted lines indicate the start time of the earthquake (Beijing time)Back to article page