Jet airplanes on Northern Pacific air routes fly over more than a hundred potentially active volcanoes. About ten days each year, volcanic eruptions create a fine ash— volcanic particles with a texture like flour and diameters smaller than 0.1 mm.
Jet airplanes on Northern Pacific air routes fly over more than a hundred potentially active volcanoes. About ten days each year, volcanic eruptions create a fine ash— volcanic particles with a texture like flour and diameters smaller than 0.1 mm.