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Eruptive fracture location forecasts from high frequency events on Piton de la Fournaise volcano
Date Issued
2013-09
Date Available
2014-03-09T04:00:11Z
Abstract
Piton de la Fournaise (La Réunion island) is a very active basaltic volcano, with five eruptions between Nov 2009 and Dec 2010. Pre-eruptive seismic crises usually last
for a few hours and mainly consist of a volcano-tectonic swarm. During the quiescent period between the volcano-tectonic swarm and the eruptive tremor, we identify another
swarm of events with a very high frequency content. These events are shallow and are located close to the future eruption site. They seem associated with the opening of the path for the magma propagating laterally at shallow depth. As these events start to occur while the magma is still in a vertical propagation phase, this seismicity seems to be related
with the generic response of the volcano to the stress perturbation and not directly induced by the magma pressure. This new observation brings new insights to short-term forecasting of the eruption location.
Type of Material
Journal Article
Publisher
Wiley
Journal
Geophysical Research Letters
Volume
40
Issue
17
Start Page
4599
End Page
4603
Copyright (Published Version)
2013 American Geophysical Union
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
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