You are browsing the archive for ash Archives - GeoSpace.
14 May 2014
Volcanic ash creates sticky situations for jet engines
WASHINGTON, DC — Thousands of airplane passengers were stranded in airports across Europe in 2010 when Iceland’s Eyjafjallajökull volcano spewed billions of cubic feet of volcanic ash into the sky. The large cloud of ash – enough to fill at least two football stadiums – threatened to clog jet engines and cause airline accidents.
But it is not just large volumes of volcanic ash that can cause problems for jet engines. Volcanic ash can melt when it gets inside the hot engine and even small amounts of the melted ash can do harm by coating the interior of turbines, interacting with protective coatings, or sticking to parts that cool the engine.
12 June 2012
Citizen-scientists answer call for Icelandic volcano ash samples
When Iceland’s Grímsvötn volcano erupted in May 2011, ejecting 0.7 cubic kilometers (0.2 cubic miles) of ash far up into the atmosphere, most of the material headed north to the pole. Computer models predicted the path of the plume, satellites beamed back images, but one researcher turned to a low-tech and inexpensive method of tracking the ash fall – cellophane sticky tape.
Volcanic lightning examined through ash grains
GeoSpace is in Selfoss, Iceland this week, reporting from AGU’s Chapman Conference on Volcanism and the Atmosphere. Check back for posts on the science presented at the meeting, as well as field trips to nearby volcanoes and geologic features. Selfoss, Iceland — The awesome sight of explosive volcanic eruptions occasionally includes a light show as well. Lightning can be sparked throughout the eruption – as the ash, rocks and gases …
11 June 2012
Planting trees in Iceland to shield against volcanic ash
Iceland is undertaking Europe’s largest reclamation project to replant birch and willows, especially in volcanically active areas, to help reduce erosion and improve the island’s ecological health.