Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7009
Authors: Bonaccorso, A.* 
Bonforte, A.* 
Calvari, S.* 
Del Negro, C.* 
Di Grazia, G.* 
Ganci, G.* 
Neri, M.* 
Vicari, A.* 
Boschi, E.* 
Title: The initial phases of the 2008–2009 Mount Etna eruption: A multidisciplinary approach for hazard assessment
Journal: JOURNAL OF GEOPHYSICAL RESEARCH 
Series/Report no.: /116 (2011)
Publisher: American Geophysical Union
Issue Date: 2011
DOI: 10.1029/2010JB007906
Keywords: Etna
effusive eruption
hazard evaluation
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 
Abstract: Between 2007 and early 2008, the Istituto Nazionale di Geofisica e Vulcanologia (INGV) monitoring networks on Etna volcano recorded a recharging phase that climaxed with a new effusive eruption on 13 May 2008 and lasted about 14 months. A dike‐forming intrusion was accompanied by a violent seismic swarm, with more than 230 events recorded in the first 6 h, the largest being ML = 3.9. In the meanwhile, marked ground deformation was recorded by the permanent tilt and GPS networks, and sudden changes in the summit area were detected by five continuously recording magnetic stations. Poor weather conditions did not allow direct observation of the eruptive events, but important information was provided by infrared satellite images that detected the start of lava fountains from the eruptive fissure, feeding a lava flow. This flow spread within the Valle del Bove depression, covering 6.4 km on the southeastern flank of the volcano in a few hours. The seismicity and deformation pattern indicated that the dike‐forming intrusion was propagating northward. It produced a dry fracture field, which generated concern for the possibility that the eruptive fissures could expand downslope toward populated areas. Monitoring and modeling of the multidisciplinary data, together with the simulations of ash dispersal and lava flows, allowed us both to infer the eruptive mechanisms and to provide correct interpretation of the ongoing phenomena, furnishing useful information for civil defense purposes. We describe how this approach of feedback between monitoring and research provides critical support to risk evaluation.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat Existing users please Login
Bonaccorso et al 2011.pdfmain article7.62 MBAdobe PDF
Show full item record

WEB OF SCIENCETM
Citations

75
checked on Feb 10, 2021

Page view(s) 50

320
checked on Mar 27, 2024

Download(s)

38
checked on Mar 27, 2024

Google ScholarTM

Check

Altmetric