Table 6 Spectral coherence function (Coh), arithmetic mean of the specific storativity coefficient (\(\tilde{S}_{s}\)), amplitude of the pore pressure signal 1 (Az1), and of the pore pressure signal 2 (Az2), vertical effective amplitude hydraulic conductivity (\(\tilde{K}_{\upsilon }^{\text{Amp}}\)) and vertical effective phase hydraulic conductivity (\({\tilde{\text{K}}}_{\upsilon }^{\Delta \varphi }\)), effective dynamic porosity (ω) obtained for the M2 earth tide for different couples of sensors in BDB-1 borehole
Chamber | Coh | \(\tilde{S}_{s}\) | Az1 | Az2 | \(\Delta \varphi\) | \(\tilde{K}_{\upsilon }^{\text{Amp}}\) | \(\tilde{K}_{\text{v}}^{\Delta \varphi }\) | B | ω | ωwater loss |
|---|---|---|---|---|---|---|---|---|---|---|
[−] | [m−1] | [bar] | [bar] | [rad] | [m s−1] | [m s−1] | [−] | [−] | [−] | |
I1 vs. I2 | 0.9985 | 1.8 × 10−6 | 8.35 × 10−4 | 1.70 × 10−3 | −0.18220 | 4.7 × 10−8 | 7.2 × 10−7 | 0.2520 | 0.09 | 0.18 |
I2 vs. I2–3 | 0.9992 | 1.1 × 10−6 | 1.70 × 10−3 | 1.82 × 10−3 | 0.03573 | 2.5 × 10−6 | 1.0 × 10−5 | 1.0350 | 0.24 | 0.15 |
I2–3 vs. I3 | 0.9986 | 1.3 × 10−6 | 1.82 × 10−3 | 1.26 × 10−3 | 0.07658 | 1.4 × 10−7 | 3.3 × 10−6 | 0.3949 | 0.11 | 0.13 |
I3 vs. I4 | 0.9977 | 1.4 × 10−6 | 1.26 × 10−3 | 1.70 × 10−3 | −0.06768 | 2.9 × 10−7 | 5.8 × 10−6 | 4.6810 | 1.33 | 0.12 |
I4 vs. I5 | 0.9930 | 1.2 × 10−6 | 1.70 × 10−3 | 1.67 × 10−3 | 0.02158 | 5.7 × 10−5 | 4.1 × 10−6 | 0.4758 | 0.12 | 0.14 |
I5 vs. I6 | 0.9965 | 1.4 × 10−6 | 1.67 × 10−3 | 1.28 × 10−3 | −0.05037 | 6.4 × 10−7 | 1.8 × 10−5 | 0.2889 | 0.08 | 0.13 |
I6 vs. I7 | 0.9965 | 2.3 × 10−6 | 1.28 × 10−3 | 6.36 × 10−3 | 0.50810 | 3.9 × 10−8 | 7.3 × 10−8 | 1.6290 | 0.79 | 0.13 |