Skip to main content

Advertisement

Table 7 Mean percentage of days (in a two year period of degassing activity) that SO2 concentrations exceed air quality guidelines and standards, given 200 tons/day and 800 tons/day emission scenarios

From: Rapid emergency assessment of ash and gas hazard for future eruptions at Santorini Volcano, Greece

  200 tons SO2/day 800 tons SO2/day
WHO limits: WHO AQG - 20μgm−3 EC AQG – 125μgm−3 WHO AQG - 20μgm−3 EC AQG – 125μgm−3
Oia 6 0.3 8 2
Thera (Fira) 16 4 17 9
Port Athinos 20 3 20 6
Airport 15 0.4 22 5
Pyrgos 17 0.8 22 10
Kamari 14 0.3 21 4
Perissa 13 0.1 21 3
Akrotiri 37 4 43 23
Therassia 4 0.3 5 1
  1. The lower threshold (20 μg/m3) represents Air Quality Guidelines (AQG) stated by the World Health Organisation, below which air quality is deemed to be good, and the upper threshold (125 μg/m3) statutory Air Quality Guidelines (AQG) set by the European Commission (EC), which are considered dangerous for periods of 24 h or more