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http://hdl.handle.net/2122/10647
DC Field | Value | Language |
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dc.date.accessioned | 2017-12-06T13:48:19Z | en |
dc.date.available | 2017-12-06T13:48:19Z | en |
dc.date.issued | 2017 | en |
dc.identifier.uri | http://hdl.handle.net/2122/10647 | en |
dc.description.abstract | Very little is known about the volatile element makeup of the gaseous emissions of Nyamulagira volcano. This paper tries to fill this gap by reporting the first gas composition measurements of Nyamulagira’s volcanic plume since the onset of its lava lake activity at the end of 2014. Two field surveys were carried out on 1 November 2014, and 13–15 October 2015. We applied a broad toolbox of volcanic gas composition measurement techniques in order to geochemically characterize Nyamulagira’s plume. Nyamulagira is a significant emitter of SO2, and our measurements confirm this, as we recorded SO2 emissions of up to ~ 14 kt/d during the studied period. In contrast to neighbouring Nyiragongo volcano, however, Nyamulagira exhibits relatively low CO2/SO2 molar ratios (< 4) and a highH2O content (> 92%of total gas emissions). Strong variations in the volatile composition, in particular for the CO2/SO2 ratio, were measured between 2014 and 2015, which appear to reflect the simultaneous variations in volcanic activity.We also determined the molar ratios for Cl/S, F/S and Br/S in the plume gas, finding values of 0.13 and 0.17, 0.06 and 0.11, and 2.3·10−4 and 1·10−4, in 2014 and 2015, respectively. A total gas emission flux of 48 kt/ d was estimated for 2014. The I/S ratio in 2015 was found to be 3.6·10−6. In addition, we were able to distinguish between hydrogen halides and non-hydrogen halides in the volcanic plume. Considerable amounts of bromine (18–35% of total bromine) and iodine (8–18%of total iodine) were found in compounds other than hydrogen halides. However, only a negligible fraction of chlorine was found as compounds other than hydrogen chloride. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Bulletin of Volcanology | en |
dc.relation.ispartofseries | /79 (2017) | en |
dc.subject | Nyamulagira | en |
dc.subject | Plume composition | en |
dc.subject | Total gas flux | en |
dc.title | Plume composition and volatile flux of Nyamulagira volcano, Democratic Republic of Congo, during birth and evolution of the lava lake, 2014–2015 | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 90 | en |
dc.subject.INGV | 04.08. Volcanology | en |
dc.identifier.doi | 10.1007/s00445-017-1174-0 | en |
dc.description.obiettivoSpecifico | 5V. Dinamica dei processi eruttivi e post-eruttivi | en |
dc.description.journalType | JCR Journal | en |
dc.contributor.author | Bobrowski, N. | en |
dc.contributor.author | Giuffrida, Giovanni Bruno | en |
dc.contributor.author | Arellano, S. | en |
dc.contributor.author | Yalire, M. | en |
dc.contributor.author | Liotta, Marcello | en |
dc.contributor.author | Brusca, Lorenzo | en |
dc.contributor.author | Calabrese, S. | en |
dc.contributor.author | Scaglione, S. | en |
dc.contributor.author | Rüdiger, J. | en |
dc.contributor.author | Castro, J. M. | en |
dc.contributor.author | Galle, B. | en |
dc.contributor.author | Tedesco, D. | 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 Roma1, Roma, 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 | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Dipartimento C.F.T.A., Palermo University, Palermo/Italy | - |
crisitem.author.dept | Chalmers University of Technology, Horsalsvagen 11, SE-412 96 Gothenburg, Sweden | - |
crisitem.author.orcid | 0000-0003-3072-4088 | - |
crisitem.author.orcid | 0000-0002-0306-3782 | - |
crisitem.author.orcid | 0000-0002-7203-1565 | - |
crisitem.author.orcid | 0000-0002-6570-9673 | - |
crisitem.author.orcid | 0000-0003-0249-6663 | - |
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 | - |
Appears in Collections: | Article published / in press |
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File | Description | Size | Format | Existing users please Login |
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Bobrowski et al 2017.pdf | RESEARCH ARTICLE | 1.83 MB | Adobe PDF |
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