Pyroclastic Falls (Ash Falls)
Pyroclastic Falls (Ash Falls) :
Explosive volcanic eruptions produce fine material called volcanic ash, which is carried upwards in a buoyant eruption column before it settles out downwind. Ash falls can blanket the entire landscape for kilometres around a volcano, and may even reach nearby islands. Close to the eruption vent, ash may be thick enough to collapse buildings and destroy vegetation. Ash can threaten livestock and cause aircraft, ship and car engines to malfunction. They can also be very dangerous to people's health since even the finest fractions of ash may cause serious respiratory problems if they are inhaled. This hazard may persist long after the eruption itself has ended
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