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TZID:Europe/Berlin
TZUNTIL:20171029T010000Z
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DTSTART:20151025T030000
TZOFFSETFROM:+0200
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RDATE:20161030T030000
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UID:www.bayceer.uni-bayreuth.de-bayceer-t127724id
DTSTAMP:20260811T081211Z
DESCRIPTION:Volcanic emissions are considered one of the major natural sour
 ces of several trace metals (e.g. As\, Cd\, Cu\, Pb\, and Zn) to the atmos
 phere\, and the geochemical cycles of these elements have to be considered
  strongly influenced by volcanic input. Explosive eruptions and volcanic p
 assive degassing inject large quantities of gas and particles into the atm
 osphere that are ultimately deposited to the Earth’s surface through wet o
 r dry deposition processes\, affecting the hydrosphere and the biosphere. 
 Volcanic emissions (including trace metals) can be taken up by plants and 
 soils\, inducing both harmful and beneficial effects. Volcanic emissions m
 ay have important consequences also on human health. Exposure to high atmo
 spheric concentrations of potentially harmful elements in volcanic areas i
 s a problem that should not be neglected because many millions of people v
 isit volcanic areas each year and many of them get close to the volcanic v
 ents\, where the emissions can be highly concentrated. The health of many 
 more people\, living on the flanks of the volcanoes\, may also adversely b
 e affected by lower chronic exposition to the same elements. The accurate 
 estimation of the global volcanic emissions of volatile trace metals into 
 the atmosphere is still affected by a high level of uncertainty. The latte
 r depends on the large variability in the emission of the different volcan
 oes and on their changing stage of activity. Moreover\, only few of the po
 tential sources in the world have been directly measured. From a literatur
 e review\, we have recognized the scarcity of investigation on trace eleme
 nt deposition in the surroundings of active volcanoes. Although active vol
 canoes are widely distributed in the world only Hawaiian\, Japanese\, Ital
 ian and a few central American volcanoes have been studied. The talk will 
 be focused on the main sampling techniques in volcanic environment\, inclu
 ding different matrices such as gas and particulate\, atmospheric depositi
 on\, vegetation (active and passive biomonitoring). Examples of the obtain
 ed resuts and possible applications will be shown.\n****\nInvited by Britt
 a Planer-Friedrich
DTSTART;TZID=Europe/Berlin:20151029T120000
DTEND;TZID=Europe/Berlin:20151029T133000
LOCATION:H6\, GEO
SUMMARY:Dr. Sergio Calabrese\, Università degli Studi di Palermo\; Departme
 nt of Earth and Marine Science (DiSTeM)\; Italy (Homepage): Environmental 
 impact of volcanic emissions
TRANSP:TRANSPARENT
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