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Documentary evidence suggests there may have been
significant human illness and morbidity in parishes in rural England in
the late eighteenth century. Demographic data for a number of rural
parishes in different environmental settings point to a singular peak in
burials taking place in 1783. The Laki Fissure eruption of 1783-84 and
the resultant atmospheric loading by gas and sub-PM10 aerosol, in
particular H2SO4 generated massive, but entirely natural air pollution.
In northwest Europe, the air pollution was manifested as a persistent,
foul-smelling dry fog and various forms of acid-damage to crops, trees
and water-bodies and a consistent range of human health problems.
These link the presence of the dry fog with headaches, eye irritation,
decreased lung function and asthma. The concept that intense
anthropogenic air pollution may cause respiratory illness and/or the
death of vulnerable sections of the population is familiar in modern
western societies. There is no reason to suggest that volcanic air
pollution may not have had a similar impact in the past. Mortality
patterns from widely separated English rural parishes suggest that a
crisis did occur during the summer of 1783 û awareness of physical
process and the circumstantial evidence suggests acid volcanic gases
may have been the key agent. Calculation of mortality indices from
available demographic data does suggest that death rates did increase
significantly at this time and mortality in the summer of 1783 is
classified as a ôcrisisö. In raw numbers over 10 000 more people died
at this time than would normally be expected û this is actually a 1000
more people than died in Iceland following the Laki fissure eruption.
USGS
For eight months during the years 1783-1784, lava erupted from dozens of vents along a 27-km-long (17-mile-long) fissure system in the highlands of southern Iceland. Basaltic lava flows—just like the flows we see here in Hawai`i—poured south out of the mountains onto the coastal plains, burying 599 square km ( 231 square miles) in the process. The total volume of lava erupted in eight months is estimated at 15.1 cubic km (3.6 cubic miles). In comparison, Kīlauea's ongoing east rift zone eruption, approaching the end of its 26th year of activity, has produced only about 3.4 cubic km (0.8 cubic miles) of lava.
In addition to these enormous lava flows, eruptive episodes from the Laki fissure started with explosive eruptions that blanketed more than 8,000 square km (3,089 square miles) with volcanic ash and cinders. And if you think the vog here can be bad, Laki pumped out 122 million tons of sulfur dioxide in eight months. Compare this to Kīlauea's 0.85 million tons from February to September, 2008—less than one percent of Laki's output over the same length of time. Half of the livestock in Iceland died after eating grass contaminated with fluorine from the gas plume, and 20 percent of Iceland's population starved during the famine that followed. The sulfur dioxide released led to crop failures throughout Europe and may have led to, or exacerbated, other famines in the northern hemisphere that occurred at about the same time.
Originally posted by alexgia
I too watch the web cam at yellowstone each day for a time. My boyfriend HATES THIS... LOL Anyway, if someone else out there has a min. it is 10:04 ET, Old faithful is on the screen but notw there is another vent behind it I do not remember seeing before. Anyone who can look and tell me if they have seen this before... Thank you... It is small and off to right of old faithful.
[edit on 17-3-2010 by alexgia]
Originally posted by ressiv
off topic..
there was a solar eclipps jan 13 same day EQ in haiti...45 days after haiti...chili...so keep april 13 in mind....
45 days /degrees is astrology...
BTW puerto rico is very buizzy again,,was also the same before haiti quake....