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

<div>(a) Spectrum analysis of a time series of 27.95 days. (b) Spectrum analysis of a time series of 15 days (both with data before occurrence of the 2008 Wenchuan earthquake).</div>

Geofluids

fig12

Figure 12

Figure 12: Possible Continuous Vertical Water Leakage of Deep Aquifer: Records from a Deep Well in Tianjin Province, North China 