Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1546
AuthorsSchnegg, P. A. 
TitleElectrical structure of Plaine des Sables caldera, Piton de la Fournaise volcano (Reunion Island)
Issue DateMar-1997
Series/Report no.40/2
URIhttp://hdl.handle.net/2122/1546
KeywordsMagnetotellurics
Piton de la Fournaise
volcanoes
Subject Classification04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methods 
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 
AbstractAn Audio Magnetotelluric (AMT) profile has been carried out across the Plaine des Sables, a former caldera of the active Piton de la Fournaise volcano, Reunion Island. Located in the Western Indian Ocean, between the Mascarene and Madagascar basins, this basaltic shield volcano originates from the activity of a hot spot. Our aim was to determine the internal structure of the volcano, in particular the shallow electrical properties of an area extending between the old and the new caldera rims. Although several teams had already conducted AMT work in this region a few years ago, there was a need for more a detailed, in depth survey. Our final model displays a noticeable slope of the Plaine des Sables basement oriented toward the present Fournaise summit. This slope is interpreted as resulting from successive landslides toward the ocean. We conclude that this dipping, electrically good conducting layer, probably belongs to the flat layering of an older caldera.
Appears in Collections:Annals of Geophysics

Files in This Item:
File Description SizeFormat 
10 schnegg.pdf3.36 MBAdobe PDFView/Open
Show full item record

Page view(s)

65
checked on Apr 25, 2017

Download(s)

66
checked on Apr 25, 2017

Google ScholarTM

Check