Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/7340
DC Field | Value | Language |
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dc.contributor.authorall | Sawyer, G. M.; Department of Geography, University of Cambridge | en |
dc.contributor.authorall | Salerno, G. G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Le Blond, J. S.; Department of Geography, University of Cambridge - Department of Mineralogy, Natural History Museum | en |
dc.contributor.authorall | Martin, R. S.; School of Biological and Chemical Sciences, Queen Mary, University of London - Department of Earth Sciences, University of Cambridge | en |
dc.contributor.authorall | Spampinato, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Roberts, T. J; Norwegian Polar Institute, Polar Environmental Centre | en |
dc.contributor.authorall | Mather, T. A.; Department of Earth Sciences, University of Oxford | en |
dc.contributor.authorall | Witt, M. L. I.; Department of Earth Sciences, University of Oxford | en |
dc.contributor.authorall | Tsanev, V. I.; Department of Geography, University of Cambridge | en |
dc.contributor.authorall | Oppenheimer, C.; Department of Geography, University of Cambridge | en |
dc.date.accessioned | 2012-01-17T11:30:11Z | en |
dc.date.available | 2012-01-17T11:30:11Z | en |
dc.date.issued | 2011 | en |
dc.identifier.uri | http://hdl.handle.net/2122/7340 | en |
dc.description.abstract | Here we report results from a multidisciplinary field campaign at Villarrica volcano, Chile, in March 2009. A range of direct sampling and remote sensing techniqueswas employed to assess gas and aerosol emissions from the volcano, and extend the time series of measurements that have been made during recent years. Airborne traverses beneath the plume with an ultraviolet spectrometer yielded an average SO2 flux of 3.7 kg s−1. This value is similar to previous measurements made at Villarrica during periods of quiescent activity. The composition of the plume was measured at the crater rim using electrochemical sensors and, for the first time, open-path Fourier transforminfrared spectroscopy, yielding a composition of 90.5 mol% H2O, 5.7% CO2, 2.6%SO2, 0.9% HCl, 0.3% HF and b0.01% H2S. Comparison with previous gas measurements made between 2000 and 2004 shows a correlation between increased SO2/HCl ratios and periods of increased activity. Base-treated filter packs were also employed during our campaign, yielding molar ratios of HBr/SO2=1.1×10−4, HI/SO2=1.4×10−5 and HNO3/SO2=1.1×10−3 in the gas phase. Our data represent the most comprehensive gas inventory at Villarrica to date, and the first evaluation of HBr and HI emissions from a South American volcano. Sun photometry of the plume showed the near-source aerosol size distributions were bimodal with maxima at b0.1 and ~1 μm. These findings are consistent with results from analyses in 2003. Electron microscope analysis of particulatematter collected on filters showed an abundance of sphericalmicron-sized particles that are rich in Si, Mg and Al. Non-spherical, S-rich particles were also observed. | en |
dc.description.sponsorship | Antofagasta plc via the University of Cambridge Centre for Latin American Studies, NERC Field Spectroscopy Facility, NERC projectNE/F004222/1, “Volgaspec” projectANR-06-CATT-012-01 and from the NOVAC project. Istituto Nazionale di Geofisica e Vulcanologia and Dipartimento di Protezione Civile-Regione Sicilia. Christ's College, University of Cambridge, NERC IKIMP project, (NE/G001219/1) and NERC grantNE/G01700X/1 for financial support. NERC National Centre for EarthObservation (“Dynamic Earth and geohazards”) | en |
dc.language.iso | English | en |
dc.publisher.name | Elsevier | en |
dc.relation.ispartof | Journal of Volcanology and Geothermal Research | en |
dc.relation.ispartofseries | /203 (2011) | en |
dc.subject | Villarrica | en |
dc.subject | FTIR | en |
dc.subject | SO2 flux | en |
dc.subject | DOAS | en |
dc.title | Gas and aerosol emissions from Villarrica volcano, Chile | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 62-75 | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.01. Gases | en |
dc.identifier.doi | 10.1016/j.jvolgeores.2011.04.003 | en |
dc.description.obiettivoSpecifico | 1.2. TTC - Sorveglianza geochimica delle aree vulcaniche attive | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Sawyer, G. M. | en |
dc.contributor.author | Salerno, G. G. | en |
dc.contributor.author | Le Blond, J. S. | en |
dc.contributor.author | Martin, R. S. | en |
dc.contributor.author | Spampinato, L. | en |
dc.contributor.author | Roberts, T. J | en |
dc.contributor.author | Mather, T. A. | en |
dc.contributor.author | Witt, M. L. I. | en |
dc.contributor.author | Tsanev, V. I. | en |
dc.contributor.author | Oppenheimer, C. | en |
dc.contributor.department | Department of Geography, University of Cambridge | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Department of Geography, University of Cambridge - Department of Mineralogy, Natural History Museum | en |
dc.contributor.department | School of Biological and Chemical Sciences, Queen Mary, University of London - Department of Earth Sciences, University of Cambridge | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Norwegian Polar Institute, Polar Environmental Centre | en |
dc.contributor.department | Department of Earth Sciences, University of Oxford | en |
dc.contributor.department | Department of Earth Sciences, University of Oxford | en |
dc.contributor.department | Department of Geography, University of Cambridge | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Department of Geography, University of Cambridge | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Department of Geography, University of Cambridge - Department of Mineralogy, Natural History Museum | - |
crisitem.author.dept | Department of Earth Sciences, University of Cambridge, UK. | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Norwegian Polar Institute, Polar Environmental Centre | - |
crisitem.author.dept | Department of Earth Sciences, University of Oxford | - |
crisitem.author.dept | Department of Earth Sciences, University of Oxford | - |
crisitem.author.dept | Department of Geography, University of Cambridge | - |
crisitem.author.orcid | 0000-0002-9336-107X | - |
crisitem.author.orcid | 0000-0002-0809-9135 | - |
crisitem.author.orcid | 0000-0003-4259-7303 | - |
crisitem.author.orcid | 0000-0003-4506-7260 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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Sawyer et al., 2011.pdf | 1.65 MB | Adobe PDF |
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