Impacts are dependent on: ash fall thickness; the duration of the ash fall; the grain size and chemistry of the ash; whether the ash is wet or dry; and any preparedness, management and prevention (mitigation) measures employed to reduce effects from the ash fall.
также ==* Влияние извержения вулкана Эйяфьядлайёкюдль на авиасообщение* A map of the 9 VAAC regions* Ash Thickness and Particle Size Downwind from Mount St. Helens, Washington, on May 18, 1980* Tephra Falls of the 1991 Eruptions of Mount Pinatubo* What to do during an ash fall event