English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/130602
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


The 1970 eruption on Deception Island (Antarctica): Eruptive dynamics and implications for volcanic hazards

AuthorsPedrazzi, Dario ; Aguirre-Díaz, Gerardo ; Bartolini, Stefania ; Martí Molist, Joan ; Geyer, Adelina
eruptive dynamics
volcanic hazards
Deception Island
Issue Date2014
PublisherGeological Society of London
CitationJournal of the Geological Society 171: 765- 778 (2014)
Abstract© 2014 The Geological Society of London. In the southern winter of 1970, a phreatomagmatic eruption occurred in the northern part of Deception Island (South Shetland Archipelago, Antarctic Peninsula). The eruption, with no eye-witnesses to the event, occurred in the same general area as the 1967 eruption, but with new, more widely distributed vents. Two contrasting groups of craters were formed in the 1970 eruption, showing that different active fissures and eruptive dynamics were operating. One group consists of ‘maar-like’ craters, whereas the other comprises conical edifices. The 1970 eruption can be classified as volcanic explosivity index (VEI) 3, with mainly phreatomagmatic phases that generated a bulk volume of about 0.1 km3 of pyroclastic material and an eruptive column at least 10 km high, from which fallout deposits are recognized more than 100 km to the NE. The 1970 eruption was similar to that of 1967 and together these two eruptive events show how eruption dynamics can be controlled by the uppermost part of the volcano substrate and the width and orientation of the eruptive fissure. These influence magma–water interaction and hence may imply different eruptive phases and associated volcanic hazards.
Identifiersdoi: 10.1144/jgs2014-015
issn: 0016-7649
Appears in Collections:(Geo3Bcn) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.