Fig. 7From: Different hydraulic responses to the 2008 Wenchuan and 2011 Tohoku earthquakes in two adjacent far-field wells: the effect of shales on aquifer lithologyAmplitude ratios and phase responses over time for the two wells at the frequency of the M2 wave. The amplitude response is the amplitude ratio of water level over the Earth tides. The dotted lines show the start time of the 2011 Tohoku earthquake (Beijing time)Back to article page