Eruptive fracture location forecasts from high frequency events on Piton de la Fournaise volcano

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Title: Eruptive fracture location forecasts from high frequency events on Piton de la Fournaise volcano
Authors: De Barros, Louis
Bean, Christopher J.
Zecevic, Megan
Brenguier, Florent
Peltier, Aline
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Date: Sep-2013
Online since: 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
Keywords: Piton de la FournaisePreeruptive seismicityHigh-frequency events
DOI: 10.1002/grl.50890
Language: en
Status of Item: Peer reviewed
Appears in Collections:Earth Sciences Research Collection

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