Figure 13
From: Geophysical assessments of renewable gas energy compressed in geologic pore storage reservoirs
3D forward gravity modelling of gas storages in the anticline limb of Rhaet sandstone formation below the study site. (a) Vertical gravity anomalies ∆g z (relative to background) for the gas reservoir with saturations Sg 1, (b) ∆g z for Sg 2, (c) their anomaly difference, and (d) least anomaly difference measurable by micro-gravimeters of ≥5 μGal resulting from a saturation change ∆S g of ±3%. Only the measurable anomaly part is visualized in c-d by blanking colour bar below 5 μGal (immeasurable limit).