Possible Continuous Vertical Water Leakage of Deep Aquifer: Records from a Deep Well in Tianjin Province, North China

Figure 6

Inverted vertical hydraulic conductivity of the aquitard and the horizontal transmissivity and storativity of the aquifer from the leaky model of Wang et al. [9] for well Gaocun. The vertical dashed lines represent the start time of the 2008 Wenchuan and the 2011 Tohoku huge earthquakes, which caused no impact on those parameters. Some kick points induced by the unstable fitting perhaps incurred by the simplifications of the model assumptions (see Section 5.2) are neglected and not shown in the figure, which could disturb and obscure the dots in the figure. We calculated the errors based on the data from January 1981 to December 1990 (which is relatively stable and continuous) and obtained the error of the hydraulic conductivity with (m/s), that of the horizontal transmissivity with (m²/s) and the horizontal storativity with .