Figure 4From: Continuous in situ measurements of volcanic gases with a diode-laser-based spectrometer: CO2 and H2O concentration and soil degassing at Vulcano (Aeolian islands: Italy)Two examples of measurements at FOG crater (Aug 27th 2004): left ≈ 5 meters away from the fumarole, right at the fumarole border corresponding to data FOG2 and FOG4 of Table 1, respectively.Back to article page