Please use this identifier to cite or link to this item:
Authors: Andronico, D.* 
Cioni, R.* 
Title: Contrasting styles of Mt. Vesuvius activity in the period between the Avellino and Pompeii Plinian eruptions, and some implications for assessment of future hazards.
Issue Date: 21-Jun-2002
Series/Report no.: /64 (2002)
DOI: 10.1007/s00445-002-0215-4
Keywords: Avellino eruptions
Mount Vesuvius
Pompeii eruptions
Volcanic hazards
Subject Classification05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions 
Abstract: Intense explosive activity occurred repeatedly at Vesuvius during the nearly 1,600-year period between the two Plinian eruptions of Avellino (3.5 ka) and Pompeii (79 A.D.). By correlating stratigraphic sections from more than 40 sites around the volcano, we identify the deposits of six main eruptions (AP1–AP6) and of some minor intervening events. Several deposits can be traced up to 20 km from the vent. Their stratigraphic and dispersal features suggest the prevalence of two main contrasting eruptive styles, each involving a complex relationship between magmatic and phreatomagmatic phases. The two main eruption styles are (1) sub-Plinian to phreato-Plinian events (AP1 and AP2 members), where deposits consist of pumice and scoria fall layers alternating with fine-grained, vesiculated, accretionary lapillibearing ashes; and (2) mixed, violent Strombolian to Vulcanian events (AP3–AP6 members), which deposited a complex sequence of fallout, massive to thinly stratified, scoria-bearing lapilli layers and fine ash beds. Morphology and density variations of the juvenile fragments confirm the important role played by magma–water interaction in the eruptive dynamics. The mean composition of the ejected material changes with time, and shows a strong correlation with vent position and eruption style. The ranges of intensity and magnitude of these events, derived by estimations of peak column height and volume of the ejecta, are significantly smaller than the values for the better known Plinian and sub-Plinian eruptions of Vesuvius, enlarging the spectrum of the possible eruptive scenarios at Vesuvius, useful in the assessment of its potential hazard.
Appears in Collections:Manuscripts

Files in This Item:
File Description SizeFormat 
Andronico&Cioni2002.pdfResearch paper987.2 kBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Aug 16, 2018


checked on Aug 16, 2018

Google ScholarTM