Results 1 to 10 of about 61,822,256 (170)

Reappraisal of gap analysis for effusive crises at Piton de la Fournaise [PDF]

Journal of Applied Volcanology, 2022
Effective and rapid effusive crisis response is necessary to mitigate the risks associated with lava flows that could threaten or inundate inhabited or visited areas.
Aline Peltier, Magdalena Oryaëlle Chevrel, Andrew J. L. Harris, Nicolas Villeneuve   +3 more
doaj   +3 more sources

22 years of satellite imagery reveal a major destabilization structure at Piton de la Fournaise [PDF]

Nature Communications, 2022
At Piton de la Fournaise volcano, satellite deformation allows to constrain the geometry of 57 magmatic intrusions. Versatile modeling reveals that a major spoon-shaped destabilization structure accommodates intrusions and seaward flank displacement.
Quentin Dumont, Valérie Cayol, Jean-Luc Froger, Aline Peltier   +3 more
doaj   +2 more sources

The role of Interferometric Synthetic Aperture Radar in Detecting, Mapping, Monitoring, and Modelling the Volcanic Activity of Piton de la Fournaise, La Réunion: A Review

Remote Sensing, 2020
Synthetic Aperture Radar (SAR) remote sensing plays a significant role in volcano monitoring despite the measurements’ non real-time nature. The technique’s capability of imaging the spatial extent of ground motion has especially helped to ...
Nicole Richter, Jean-Luc Froger
exaly   +3 more sources

A unique electrical resistivity experiment reveals the 3D interior of Piton de la Fournaise [PDF]

Scientific Reports
Understanding the internal structure of volcanoes is essential for improving predictions of eruptions and for assessing hazards. However, creating high-resolution models of their interiors remains a significant challenge.
Lydie Gailler, Romain Guillard, Solène Buvat, Philippe Labazuy, Anthony Finizola, Emilie Roulleau, Jean-François Lénat, The ERT3D Scan4Volc team   +7 more
doaj   +2 more sources

Very‐Long‐Period Seismic Signals During Lateral Dike Propagation at Piton de La Fournaise Volcano

Geophysical Research Letters
We report a previously undocumented sequence of very long period (VLP) signals preceding the September 2022 eruption at Piton de la Fournaise. These events occurred during lateral magma propagation and exhibit quasi‐periodic sawtooth‐shaped displacement ...
Z. Duputel, O. Lengliné, L. Costes, V. Ferrazzini   +3 more
doaj   +2 more sources

Machine Learning Reveals the Seismic Signature of Eruptive Behavior at Piton de la Fournaise Volcano [PDF]

Geophysical Research Letters, 2020
Volcanic tremor is key to our understanding of active magmatic systems, but due to its complexity, there is still a debate concerning its origins and how it can be used to characterize eruptive dynamics.
C. X. Ren, A. Peltier, V. Ferrazzini, B. Rouet‐Leduc, P. A. Johnson, F. Brenguier   +5 more
doaj   +2 more sources

Dike‐Induced Earthquakes as Probes of the Local Stress Field Prior to the 1998 Eruption of the Piton de la Fournaise Volcano, La Réunion

Geophysical Research Letters
Volcano‐tectonic (VT) earthquakes generated during dike propagation provide useful constraints on stress changes in volcanic systems. During the 1998 pre‐eruptive unrest at Piton de la Fournaise, ∼600 VT earthquakes were recorded.
Yiwen Huang, Yan Zhan, Diana C. Roman, Valérie Ferrazzini, Zacharie Duputel   +4 more
doaj   +2 more sources

Changes in the Long-Term Geophysical Eruptive Precursors at Piton de la Fournaise: Implications for the Response Management

Frontiers in Earth Science, 2018
Anticipating eruptions early enough to give warning to authorities is one of the main goals in volcanology. However, identifying and providing unequivocal identification on volcano reawakening remain challenging issues, mostly when unrests are sudden or ...
Valerie Ferrazzini, Aline Peltier, Nicolas Villeneuve   +2 more
exaly   +3 more sources

Long-Term Subsidence in Lava Fields at Piton de la Fournaise Volcano Measured by InSAR: New Insights for Interpretation of the Eastern Flank Motion

Remote Sensing, 2018
Long-term deformation often occurs in lava fields at volcanoes after flow emplacements. The investigation and interpretation of deformation in lava fields is one of the key factors for the assessment of volcanic hazards.
Kun Tan, Huaizhan Li, Kefei Zhang
exaly   +3 more sources

Tracking Deep Magma Migration Through Diffuse CO2 Degassing: Insights From Piton de la Fournaise Volcano (2013–2023)

Geochemistry, Geophysics, Geosystems
Volcano monitoring requires identifying and distinguishing physico‐chemical processes at various depths within magma plumbing systems and their links to volcanic activity.
B. Bénard, A. Di Muro, A. Finizola, A. Peltier, V. Ferrazzini, I. Vlastelic, P. Besson, V. Famin, R. Gusset, K. Mussard, P. Kowalski, P. Boissier, C. Brunet, F. Lauret, N. Desfete, C. Griot, M. Liuzzo, S. Gurrieri, G. Giudice, F. Grassa, M. Longo   +20 more
doaj   +2 more sources