posted on Apr, 19 2010 @ 06:43 PM
reply to post by plumranch
Volcanic eruptions: Impacts on environment, ecosystems and health
From the Icelandic Fissure:
Over 8 months in 1783-4, enormous emissions of sulphur dioxide, hydrogen chloride and hydrogen fluoride were disgorged and a volcanic
pollutant cloud formed over the island. The cloud, often referred to as a dry acid fog, also fumigated many parts of Europe, causing damage to
vegetation and public health problems
Someone mentioned that by now we should have airplanes that could handle volcanic ash. Fact is they don't. I've flown through, driven through, swept
up and scooped up lots of ash from Alaskan volcanoes over the years. The ash is very abrasive. All leading edges of the plane are affected, abraded.
The faster you hit the ash the worse and jet fan blades take it the hardest. Many horror stories of flying in ash have resulted through the years, 2
that I can think of in 747s. Engine out and difficult restart in both cases.
Our Alaskan volcanoes have not had the toxic fumes that are possible from Icelandic counterparts. I remember being out in the ash fall and smelling
some pretty heavy sulfur fumes, that's about it.
We removed the ash from our garden plots by raking and sweeping but generally the ash did not seem toxic and possible was beneficial. Much of the thin
top soil found in this area of Alaska/ Anchorage/ South Central is made up of ash from various eruptions. My back yard on a cut bank has a 1 ft. layer
of light colored ash. Any of this soil is quite fertile if large amounts of lime is added to neutralize the ph which start near 5 and otherwise won't
support vegetables, even grass.