Geochemical precursors of the activity of an open‐conduit volcano: The Stromboli 2002–2003 eruptive events

DOI Web Site Web Site 被引用文献8件
  • Maria Luisa Carapezza
    Istituto Nazionale di Geofisica e Vulcanologia Sezione di Roma1 Rome Italy
  • Salvatore Inguaggiato
    Istituto Nazionale di Geofisica e Vulcanologia Sezione di Palermo Palermo Italy
  • Lorenzo Brusca
    Istituto Nazionale di Geofisica e Vulcanologia Sezione di Palermo Palermo Italy
  • Manfredi Longo
    Istituto Nazionale di Geofisica e Vulcanologia Sezione di Palermo Palermo Italy

書誌事項

公開日
2004-04-14
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2004gl019614
公開者
American Geophysical Union (AGU)

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説明

<jats:p>Marked increases of CO<jats:sub>2</jats:sub>, H<jats:sub>2</jats:sub> and He dissolved in thermal waters and changes in the dissolved carbon isotopic composition, were observed at Stromboli before the 28 December 2002 eruption and before a violent explosive paroxysm occurred on 5 April 2003. High anomalous CO<jats:sub>2</jats:sub> flux values were recorded at the crater rim since a week before the eruption onset. The first anomalies in the thermal waters (dissolved CO<jats:sub>2</jats:sub> amount) appeared some months before the eruption, when magma column rose at a very high level in the conduit. High peaks of dissolved H<jats:sub>2</jats:sub> and He were recorded a few days before the paroxysm. Carbon isotopic composition indicates a magmatic origin of the dissolved CO<jats:sub>2</jats:sub> whose increase, together with those of H<jats:sub>2</jats:sub> and He, is attributed to an increasing output of deep gases likely produced by depressurization of a rising batch of a deep gas‐rich magma, whose fragments have been emitted during the explosion.</jats:p>

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