Fig. 8: A comparison of ground based on UAS CO2/SO2 molar ratios.
From: Combined ground and aerial measurements resolve vent-specific gas fluxes from a multi-vent volcano
Ground-based multi-GAS measurements from the permanent monitoring station located on the crater rim of Stromboli. Timeseries of CO2/SO2 molar gas ratios measured 4–11 June 2018, showing automatically processed (blue crosses) and reanalysed (grey symbols) ratios. Passive degassing (dark grey symbols) represents persistent activity measured over tens of minutes, while explosive degassing (light grey symbols) represents transient peaks lasting <60 s. Red shaded bars correspond the aerial vent-specific gas compositions and 95% confidence intervals presented in Table 1 for passive (P) and explosive (E) emissions.
