Figure 2
From: Perception of a chronic volcanic hazard: persistent degassing at Masaya volcano, Nicaragua
Ambient concentrations in μg m−3of volcanogenic gases at Masaya as measured in February-March 2012. Surfaces interpolated from point measurements using IDW. (A) SO2 concentrations at Masaya as measured in February-March 2012. Large areas downwind exceed the WHO guideline value of 20 μg m−3 per 24 hours. (B) HCl (C) HF and (D) NO2.