Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/11069
DC Field | Value | Language |
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dc.date.accessioned | 2018-03-07T11:10:26Z | en |
dc.date.available | 2018-03-07T11:10:26Z | en |
dc.date.issued | 2017 | en |
dc.identifier.uri | http://hdl.handle.net/2122/11069 | en |
dc.description.abstract | Volcanic gas emission measurements inform predictions of hazard and atmospheric impacts. For these measurements, Multi-Gas sensors provide low-cost in situ monitoring of gas composition but to date have lacked the ability to detect halogens. Here, two Multi-Gas instruments characterized passive outgassing emissions from Mt. Etna’s (Italy) three summit craters, Voragine (VOR), North-east Crater (NEC) and Bocca Nuova (BN) on 2 October 2013. Signal processing (Sensor Response Model, SRM) approaches are used to analyse H2S/SO2 and HCl/SO2 ratios. A new ability to monitor volcanic HCl using miniature electrochemical sensors is here demonstrated. A “direct-exposure” Multi-Gas instrument contained SO2, H2S and HCl sensors, whose sensitivities, cross-sensitivities and response times were characterized by laboratory calibration. SRM analysis of the field data yields H2S/SO2 and HCl/SO2 molar ratios, finding H2S/SO2 = 0.02 (0.01–0.03), with distinct HCl/SO2 for the VOR, NEC and BN crater emissions of 0.41 (0.38–0.43), 0.58 (0.54–0.60) and 0.20 (0.17–0.33). A second Multi-Gas instrument provided CO2/SO2 and H2O/SO2 and enabled cros comparison of SO2. The Multi-Gas-measured SO2-HCl-H2S CO2-H2O compositions provide insights into volcanic outgassing. H2S/SO2 ratios indicate gas equilibration at slightly below magmatic temperatures, assuming that the magmatic redox state is preserved. Low SO2/HCl alongside low CO2/SO2 indicates a partially outgassed magma source. We highlight the potential for low-cost HCl sensing of H2S-poor HCl rich volcanic emissions elsewhere. Further tests are needed for H2S-rich plumes and for long-term monitoring. Our study brings two new advances to volcano hazard monitoring: real-time in situ measurement of HCl and improved MultiGas SRM measurements of gas ratios. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Bulletin of Volcanology | en |
dc.relation.ispartofseries | /79 (2017) | en |
dc.title | Validation of a novel Multi-Gas sensor for volcanic HCl alongside H2S and SO2 at Mt. Etna | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 36 | en |
dc.subject.INGV | 04.08. Volcanology | en |
dc.identifier.doi | 10.1007/s00445-017-1114-z | en |
dc.description.obiettivoSpecifico | 6A. Geochimica per l'ambiente | en |
dc.description.journalType | JCR Journal | en |
dc.contributor.author | Roberts, T. J | en |
dc.contributor.author | Lurton, T. | en |
dc.contributor.author | Giudice, Gaetano | en |
dc.contributor.author | Liuzzo, Marco | en |
dc.contributor.author | Aiuppa, Alessandro | en |
dc.contributor.author | Coltelli, Mauro | en |
dc.contributor.author | Vignelles, D. | en |
dc.contributor.author | Salerno, Giuseppe Giovanni | en |
dc.contributor.author | Couté, B. | en |
dc.contributor.author | Chartier, M. | en |
dc.contributor.author | Baron, R. | en |
dc.contributor.author | Saffell, J. R. | en |
dc.contributor.author | Scaillet, B. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | 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 | Norwegian Polar Institute, Polar Environmental Centre | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.orcid | 0000-0002-9410-4139 | - |
crisitem.author.orcid | 0000-0002-3099-7505 | - |
crisitem.author.orcid | 0000-0002-0254-6539 | - |
crisitem.author.orcid | 0000-0001-7868-3946 | - |
crisitem.author.orcid | 0000-0002-9336-107X | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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 | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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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File | Description | Size | Format | Existing users please Login |
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Roberts_Validation of a novel Multi-Gas sensor for volcanic HCl alongside H2S and SO2 at Mt. Etna.pdf | 2.42 MB | Adobe PDF |
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