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

Figure 7

Fitting the (a) actual gain (barometric efficiency)-ω and (b) phase-ω curves calculated from the observed data of water level and barometric pressure with model C [17]. In order to be in accordance with the result of Rojstaczer [15], the same as done by Zhang et al. [13], we reduced 180 degrees in the barometric phase shift.

(a)

(b)