Figure 7

Tidal signal in the hydraulic pressure data of S13 borehole. (a) data from 5 to 15 March 2016, about 6 months before the Amatrice earthquake; (b) data from 16 to 26 August 2017, about one year after the Amatrice earthquake.

Tidal signal in the hydraulic pressure data of S13 borehole. (a) data from 5 to 15 March 2016, about 6 months before the Amatrice earthquake; (b) data from 16 to 26 August 2017, about one year after the Amatrice earthquake.