Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/338

Authors: Aiuppa, A.*
Federico, C.*
Title: Anomalous magmatic degassing prior to the 5th April 2003 paroxysm on Stromboli
Title of journal: Geophysical Research Letters
Series/Report no.: 31 (2004)
Publisher: American Geophysical Union
Issue Date: 2004
DOI: 10.1029/2004GL020458
URL: http://www.agu.org/
Keywords: magmatic degassing
paroxysm
Stromboli
Abstract: A major explosion occurred at Stromboli on April 5 2003, being the most powerful event over a period of exceptional eruptive activity lasting from December to July. Here, we describe results from a network of diffusive tubes set up on the Stromboli’s summit area, aimed at a characterisation of plume composition (SO2, HCl, HF) prior to and after April 5. Data analysis revealed anomalous sulphur degassing 2–3 days before the event, when SO2/HCl ratios (9) significantly higher than those typical of quiescent degassing (1) were recorded. We interpret this exceptional plume signature as an evidence of S-rich magmas ascending in the shallow plumbing system, and propose high SO2/HCl as a potential precursor of major explosions on the volcano. The post-April 5 phase was characterised by time-decreasing SO2/HCl and SO2/HF plume ratios, ascribed to declining magma feeding as a prelude to restoration of ‘‘normal’’ Strombolian activity.
Appears in Collections:05.02.03. Volcanic eruptions
04.08.01. Gases
04.08.06. Volcano monitoring
04.03.06. Measurements and monitoring
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
Aiuppa et al., GRL 2004.pdfMain article252.45 kBAdobe PDFView/Open
Redirect AGU.htmlRedirect-AGU503 BHTMLView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Share this record
Del.icio.us

Citeulike

Connotea

Facebook

Stumble it!

reddit


 

Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA