Latest Volcanic Ash Advisory Center Stories
A joint NOAA/NASA satellite is one of several satellites providing valuable information to aviators about volcanic hazards.
Frequent travelers can agree that flight delays are all too familiar these days. NASA is looking into a potentially dangerous, though much less frequent, problem that has recently caused major disruptions in flight schedules: volcanic eruptions.
While piloting a commercial transatlantic flight last year, Captain Klaus Sievers and his crew got a whiff of an unusual odor
About 500 flights were grounded on Tuesday after ash from an Icelandic volcano moved its way through Britain and towards northern Europe.
As Iceland's GrÃmsvÃ¶tn volcano spews ash high into the atmosphere, satellite observations are providing essential information to advisory centers assessing the possible hazards to aviation.
Since its latest series of deadly eruptions, Javaâ€™s Mt Merapi has been spewing volcanic ash clouds into the air.
Twin volcanoes on Russia's far-eastern Kamchatka Peninsula erupted on Thursday, pumping massive ash clouds miles into the air, diverting flights and covering nearby towns in thick, heavy ash.
Following the eruption of Icelandâ€™s Eyjafjallajoekull volcano that spewed huge amounts of ash and grounded numerous flights, more than 50 experts from around the world gathered at a workshop to discuss what has been learned and identify future opportunities for volcanic ash monitoring.
Some German airlines leveled their criticism against the forecasts of the Volcanic Ash Advisory Centre (VAAC) in London on the spread of the ash cloud over Europe, as these forecasts did not provide any precise information on the ash concentration in the atmosphere.
Over the last three days NASA's Aqua and Terra satellites have provided visible and infrared imagery of the ash plume from the EyjafjallajÃ¶kull volcano in Iceland.
Volcanic ash is the term for very fine rock and mineral particles less than 2 mm in diameter that are ejected from a volcanic vent. Ash is created when solid rock shatters and magma separates into minute particles during explosive volcanic activity. The usually violent nature of an eruption involving steam (phreatic eruption) results in the magma and perhaps solid rock surrounding the vent, being torn into particles of silt to sand size. The plume that is often seen above an erupting volcano...
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