English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/82026
Share/Impact:
Statistics
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
Exportar a otros formatos:

Title

Temperature proxy data and their significance for the understanding of pyroclastic density currents

AuthorsScott, Andrew C.; Sparks, R. S. J.; Bull, Ian D.; Knicker, Heike ; Evershed, Richard P.
KeywordsPyroclastic density current
Temperature
Soufrière Hills
Volcano
Montserrat
Charcoal
Issue DateFeb-2008
PublisherGeological Society of America
CitationGeology 36 (2): 143-146 (2008)
AbstractA major dome collapse of the Soufrière Hills volcano, Montserrat, on 26 December 1997 generated a devastating pyroclastic density current that destroyed vegetation and left a distinctive tar-like deposit on the surface. The deposit included a range of charred, mainly herbaceous angiosperm, axes and roots. Studies of reflectance of these charcoalified plants indicated mean reflectances of 0.72–1.16 for the three samples with a maximum reflectance of 1.77 recorded for all readings. These data provide minimum temperatures of the flow of 300–425 °C, consistent with organic geochemical data obtained by 13C solid-state nuclear magnetic resonance and gas chromatography–mass spectrometry. These temperatures have been used to calculate characteristics of the pyroclastic density current. We estimate flow front current densities near the ground of 1.8–3 kg/m3, using constraints from a mean flow speed of 90 m/s estimated from seismic data. The mean temperature of the ash component is estimated as 400–610 °C.
Publisher version (URL)http://dx.doi.org/10.1130/G24439A.1
URIhttp://hdl.handle.net/10261/82026
DOI10.1130/G24439A.1
ISSN0091-7613
E-ISSN1943-2682
Appears in Collections:(IRNAS) Artículos
Files in This Item:
File Description SizeFormat 
Acceso restringido Digital CSIC.pdf20,83 kBAdobe PDFThumbnail
View/Open
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.