{"refrec":{"BRefID":259123,"RR":"<b>Rizzo, A.L.; Caracausi, A.; Chavagnac, V.; Nomikou, P.; Polymenakou, P.N.; Mandalakis, M.; Kotoulas, G.; Magoulas, A.; Castillo, A.; Lampridou, D.</b> (2016). Kolumbo submarine volcano (Greece): An active window into the Aegean subduction system. <i>NPG Scientific Reports 6(28013)</i>: 9 pp. <a href=\"http://dx.doi.org/10.1038/srep28013\" target=\"_blank\">http://dx.doi.org/10.1038/srep28013</a>","BEntID":251132,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>NPG Scientific Reports 6(28013)</i>: 9 pp. <a href=\"http://dx.doi.org/10.1038/srep28013\" target=\"_blank\">http://dx.doi.org/10.1038/srep28013</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Rizzo, A.L.; Caracausi, A.; Chavagnac, V.; Nomikou, P.; Polymenakou, P.N.; Mandalakis, M.; Kotoulas, G.; Magoulas, A.; Castillo, A.; Lampridou, D.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Rizzo, A.L. <i>et al.</i>","Englishabstract":"Submarine volcanism represents similar to 80% of the volcanic activity on Earth and is an important source of mantle-derived gases. These gases are of basic importance for the comprehension of mantle characteristics in areas where subaerial volcanism is missing or strongly modified by the presence of crustal/atmospheric components. Though, the study of submarine volcanism remains a challenge due to their hazardousness and sea-depth. Here, we report He-3/He-4 measurements in CO2-dominated gases discharged at 500 m below sea level from the high-temperature (similar to 220 degrees C) hydrothermal system of the Kolumbo submarine volcano (Greece), located 7 km northeast off Santorini Island in the central part of the Hellenic Volcanic Arc (HVA). We highlight that the mantle below Kolumbo and Santorini has a He-3/He-4 signature of at least 7.0 Ra (being Ra the He-3/He-4 ratio of atmospheric He equal to 1.39x10(-6)), 3 Ra units higher than actually known for gases-rocks from Santorini. This ratio is also the highest measured across the HVA and is indicative of the direct degassing of a Mid-Ocean-Ridge-Basalts (MORB)-like mantle through lithospheric faults. We finally highlight that the degassing of high-temperature fluids with a MORB-like He-3/He-4 ratio corroborates a vigorous outgassing of mantle-derived volatiles with potential hazard at the Kolumbo submarine volcano.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Kolumbo submarine volcano (Greece): An active window into the Aegean subduction system","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-21 01:32:18.282030","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2016,"MonPub":null,"DateUpdate":"2018-02-13","DateCreate":"2016-06-21","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000392072200001","VABBcode":null,"OpenAcc":1,"DOI":"10.1038/srep28013"},"refs":null,"anarec":{"AnaID":259123,"PubliDate":2016,"Pagination":"9 pp","XtraPublOfAnaID":null,"ISBN":null,"Volume":"6","Issue":"28013","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":208093,"SerRR":"Scientific Reports (Nature Publishing Group). Nature Publishing Group: London.  ISSN 2045-2322; e-ISSN 2045-2322","StandardTitleSer":"Scientific Reports (Nature Publishing Group)","ISSN":"2045-2322","AbbrevSer":"NPG Scientific Reports","StandardTitleMon":null,"StartPage":null,"Pages":null,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Rizzo","Firstname":"Andrea Luca","Initials":"A.L.","Affiliation":"Ist Nazl Geofis & Vulcanol, Sez Palermo, Palermo, Italy.","Discriminator":null,"CorporateFlag":0,"BEntID":251132,"AutID":299023,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Caracausi","Firstname":"Antonio","Initials":"A.","Affiliation":"Ist Nazl Geofis & Vulcanol, Sez Palermo, Palermo, 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