Mode of action: By burial, filling, corrosion, accumulation, abrasion, conduction, absorption, dissolution and chemical reaction, magnetism.

Distance: (average) 20-30 km - (max) > 800 km.

 

Speed: (average) < 15m/s 

 

Dispersion often depends on the orientation of the wind, and the effects are variable, in particular according to the thickness of accumulated ashes.

 

Environmental damage, disturbances of communication networks, water pollution, roof collapses...

 

Effect on humans: Irritations of the mucous membranes...

 

Mode of action: By impact, combustion, burial

Distance: (average): 5 km

Temperature: < 1000°C

Speed: (average) 50-100m/s

 

Fires (incandescent materials), collapse and perforation of the roofs, burial or obstruction of the infrastructures, broken windows.

 

On humans: death or serious injuries