Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/13447| DC Field | Value | Language |
|---|---|---|
| dc.date.accessioned | 2020-03-10T10:14:06Z | - |
| dc.date.available | 2020-03-10T10:14:06Z | - |
| dc.date.issued | 2019-02-20 | - |
| dc.identifier.uri | http://hdl.handle.net/2122/13447 | - |
| dc.description | An edited version of this paper was published by AGU. Copyright (2019) American Geophysical Union | en_US |
| dc.description.abstract | Tectonic and magmatic activity may couple at volcanic arcs, even though any relationship is less defined in smaller arcs, experiencing limited activity. Here we use gas geochemistry data collected during the 2011–2012 unrest at Santorini (Greece) to understand better the dynamics of the Aegean Volcanic Arc with regard to its tectonic setting. Since the most recent eruption in 1950 and before the unrest, minor seismicity and CO2 degassing (mainly from the fumaroles of Nea Kameni islet) were observed at Santorini. On January 2011, anomalous seismicity along the NE‐SW trending Kameni Line was accompanied by an inflation north of Nea Kameni. Fumarolic gas composition changed and gas release notably increased. We carried out geochemical study on both Kameni and Thera islands from January 2012 to June 2013. We repeated surveys of diffuse soil CO2 degassing and of in‐soil gas concentration, and we analyzed fumaroles and gas dissolved in thermal waters for chemical and isotopic composition. In agreement with previous studies, our geochemical data, particularly the diffuse soil CO2 flux increase, the increase of H2 content, and of CO2/CH4 and 3He/4He ratios in fumarolic gases, support geophysical data in indicating that unrest was associated with the emplacement of new mafic magma. This unrest had limited effect on the regional setting, with gas emissions focusing along the regional NE‐SW structures, without triggering by any seismic event, conversely to the 1950 eruption, which probably occurred in a frame of general tectonic reorganization of the Aegean microplate. | en_US |
| dc.language.iso | English | en_US |
| dc.publisher.name | Agu | en_US |
| dc.relation.ispartof | Tectonics | en_US |
| dc.relation.ispartofseries | 3/38 (2019) | en_US |
| dc.subject | Extensive and systematic geochemical surveys followed the anomalous degassing during Santorini unrest, both in the caldera center and on the inner caldera walls; | en_US |
| dc.subject | Gas ratios and isotopic composition indicate deep mafic magma refilling into the shallow dacitic plumbing system; | en_US |
| dc.subject | Unrest has limited apparent relations with the longer-term tectonic evolution of the Arc, conversely to the 1950 eruption | en_US |
| dc.title | Fluid Geochemistry Contribution to the Interpretation of the 2011–2012 Unrest of Santorini, Greece, in the Frame of the Dynamics of the Aegean Volcanic Arc | en_US |
| dc.type | article | en |
| dc.description.status | Published | en_US |
| dc.type.QualityControl | Peer-reviewed | en_US |
| dc.description.pagenumber | 1033-1049 | en_US |
| dc.identifier.URL | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018TC005377 | en_US |
| dc.subject.INGV | 04.08. Volcanology | en_US |
| dc.subject.INGV | 04.06. Seismology | en_US |
| dc.identifier.doi | 10.1029/2018TC005377 | en_US |
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Volcanic eruptions following M≥ 9 megathrust earthquakes: Implications for the Sumatra-Andaman volcanoes. Geology, 35(6), 539-542. Wang, C.Y., & Manga, M. (2010). Hydrologic responses to earthquakes and a general metric, Geofluids, 10, 206–216. | en_US |
| dc.description.obiettivoSpecifico | 2V. Struttura e sistema di alimentazione dei vulcani | en_US |
| dc.description.obiettivoSpecifico | 4V. Processi pre-eruttivi | en_US |
| dc.description.obiettivoSpecifico | 6V. Pericolosità vulcanica e contributi alla stima del rischio | en_US |
| dc.description.journalType | JCR Journal | en_US |
| dc.contributor.author | Tarchini, Luca | - |
| dc.contributor.author | Carapezza, Maria Luisa | - |
| dc.contributor.author | Ranaldi, Massimo | - |
| dc.contributor.author | Sortino, Francesco | - |
| dc.contributor.author | Gattuso, Alessandro | - |
| dc.contributor.author | Acocella, Valerio | - |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en_US |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en_US |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en_US |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en_US |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en_US |
| item.openairetype | article | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.grantfulltext | open | - |
| 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 Roma1, Roma, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, 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 | Università Roma Tre, Dipartimento di Scienze Geologiche, Rome, Italy | - |
| crisitem.author.orcid | 0000-0001-6045-0802 | - |
| crisitem.author.orcid | 0000-0002-0223-6012 | - |
| crisitem.author.orcid | 0000-0001-6464-6298 | - |
| crisitem.author.orcid | 0000-0002-2400-911X | - |
| crisitem.author.orcid | 0000-0003-1815-0421 | - |
| 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.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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| Santorini AcceptedMs Tarchini et al 2019 tectonics.pdf | Accepted Ms | 2.43 MB | Adobe PDF | View/Open |
| LicenseCopy_TECT21063_2019-02-21.pdf | AGu Permission to Deposit an Article in an Institutional Repository | 37.15 kB | Adobe PDF | View/Open |
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