Results 211 to 220 of about 116,799 (248)
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Seismological constraints on the position of the fragmentation surfaces in the volcano conduit
Earth and Planetary Science Letters, 2008Abstract The durations of the pre-explosion low-frequency impulses of the broadband seismic records of 286 Vulcanian explosions of Volcan de Colima and 15 Vulcanian explosions of Popocatepetl volcano, Mexico were analyzed. These pre-explosion impulses are thought to be produced during the upward movement of fragmented magma in the volcano conduit ...
Vyacheslav M. Zobin +3 more
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Volcano-Seismic Transfer Learning and Uncertainty Quantification With Bayesian Neural Networks
IEEE Transactions on Geoscience and Remote Sensing, 2020Over the past few years, deep learning (DL) has emerged as an important tool in the fields of volcano and earthquake seismology. However, these methods have been applied without performing thorough analyses of the associated uncertainties.
Ángel Bueno +4 more
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Mt. Etna volcano: A seismological framework
2004Mount Etna is one of the most active and powerful basaltic volcanoes in the world, with an historical record of documented eruptions going back over 2000 years. It is located in eastern Sicily in a complex geodynamic framework, where major regional structural lineaments play a key role in the dynamic processes of the volcano [e.g., Bonaccorso et al ...
Domenico Patanè +4 more
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4-D noise-based seismology at volcanoes: Ongoing efforts and perspectives
Journal of Volcanology and Geothermal Research, 2016Monitoring magma pressure buildup at depth and transport to surface is a key point for improving volcanic eruption prediction. Seismic waves, through their velocity dependence to stress perturbations, can provide crucial information on the temporal evolution of the mechanical properties of volcanic edifices.
Brenguier, F. +7 more
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On heterogeneities with reduced viscosity in the mantle under the Kamchatka volcanoes according to seismological data [PDF]
Bulletin Volcanologique, 1973 A seismological study of the upper mantle under the Kamchatka volcanoes using body waves from nearby earthquakes has shown local heterogencities consisting of materials with reduced elastic properties at depths from 30 to 90 km.
Farberov A.I. +2 more
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Recent eruptions at Bezymianny volcano—A seismological comparison
Journal of Volcanology and Geothermal Research, 2013Abstract For the past few decades, Bezymianny volcano has erupted once to twice per year. Here, I examine eight eruptive events between 2006 and 2010. This is the first time period for which proximal or broadband seismic data have been recorded at Bezymianny. Several recurring patterns are demonstrated in advance of eruptions. Eruptions are generally
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APPLICATION OF SEISMOLOGY-BASED VOLCANO MONITORING TECHNIQUES AT WHAKAARI/WHITE ISLAND VOLCANO
Volcanoes present some of the most immediate and unpredictable natural hazards, particularly when they erupt without clear precursors. Phreatic and phreatomagmatic eruptions are especially challenging to forecast because they involve rapid interactions ...
D. Y. Mengesha
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Seismological aspects of the 1989–1990 eruptions at redoubt volcano, Alaska: the SSAM perspective
Journal of Volcanology and Geothermal Research, 1994Abstract SSAM is a simple and inexpensive tool for continuous monitoring of average seismic amplitudes within selected frequency bands in near real-time on a PC-based data acquisition system. During the 1989–1990 eruption sequence at Redoubt Volcano, the potential of SSAM to aid in rapid identification of precursory Long-Period (LP) event swarms was ...
Christopher D. Stephens +4 more
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New Methods and Future Trends in Seismological Volcano Monitoring
1996Volcanic processes operate over a wide range of time scales that require a variety of instruments and techniques for their study. Short-period seismology typically covers the band 0.1–1 s, while broadband seismology can extend that band to 0.1–100 s.
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Listening to Volcanoes: Current Frontiers in Volcano Seismology and Acoustics
Volcano seismology and acoustics have advanced rapidly in recent years, significantly improving our ability to observe and interpret volcanic processes across a wide range of spatial and temporal scales. This talk will provide a broad overview of currently relevant topics in these fields, with an emphasis on how seismic and acoustic observations ...openaire +1 more source