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http://hdl.handle.net/2122/2981
Authors: | Aiuppa, A.* Bagnato, E.* Witt, M. L. I.* Mather, T. A.* Parello, F.* Pyle, D. M.* Martin, R. S.* |
Title: | Real-time simultaneous detection of volcanic Hg and SO2 at La Fossa Crater Vulcano (Aeolian Islands, Sicily) | Journal: | Geophysical Research Letters | Series/Report no.: | /34 (2007) | Publisher: | American Geophysical Union | Issue Date: | 2007 | DOI: | 10.1029/2007GL030762 | Keywords: | Mercury Fumarolic condensates Volcanic emissions |
Subject Classification: | 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring | Abstract: | Measuring Hg/SO2 ratios in volcanic emissions is essential for better apportioning the volcanic contribution to the global Hg atmospheric cycle. Here, we report the first real-time simultaneous measurement Hg and SO2 in a volcanic plume, based on Lumex and MultiGAS techniques, respectively. We demonstrate that the use of these novel techniques allows the measurements of Hg/SO2 ratios with a far better time resolution than possible with more conventional methods. The Hg/SO2 ratios in the plume of F0 fumarole on La Fossa Crater, Vulcano Island spanned an order of magnitude over a 30 minute monitoring period, but was on average in qualitative agreement with the Hg/SO2 ratio directly measured in the fumarole (mean plume and fumarole ratios being 1.09 x 10-6 and 2.9 x 10-6, respectively). The factor 2 difference between plume and fumarole compositions provides evidence for fast Hg chemical processing the plume. |
Appears in Collections: | Article published / in press |
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Aiuppa et al., GRL 2007.pdf | Paper | 269.87 kB | Adobe PDF | |
Aiuppa et al. GRL 2007.doc | Manuscript | 98 kB | Microsoft Word | View/Open |
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