Results 201 to 210 of about 7,688 (251)
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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 ...
Salvatore Spampinato +4 more
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Polarization Analysis in the Discrete Wavelet Domain: An Application to Volcano Seismology
Bulletin of the Seismological Society of America, 2010Abstract We propose a method for analyzing the polarization of three-component digital recordings using the discrete wavelet transform (DWT). This method allows for the automatic detection and separation of seismic phases that have a coherent linear or elliptical polarization.
Flora Giudicepietro +5 more
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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 ...
Bernard Chouet +4 more
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25 Volcano seismology and monitoring for eruptions
2002Seismology is considered one of the most useful tools for eruption forecasting and monitoring. Volcanoes are the sources of a great variety of seismic signals that behave differently than those from events on earthquake faults. Every recorded volcanic eruption is preceded by an increase in earthquake activity beneath or near the volcano and accompanied
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Bulletin of Volcanology, 2004
This study summarizes the results of structural, geochemical and seismological surveys carried out at Nisyros volcano (Aegean Sea, Greece) during 1999–2001. Field mapping and mesostructural measurements at the summit caldera (Lakki plain) indicate that faults follow two main strikes: NE-SW and N-S.
CALIRO S +6 more
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This study summarizes the results of structural, geochemical and seismological surveys carried out at Nisyros volcano (Aegean Sea, Greece) during 1999–2001. Field mapping and mesostructural measurements at the summit caldera (Lakki plain) indicate that faults follow two main strikes: NE-SW and N-S.
CALIRO S +6 more
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Terra Nova, 2020
Abstract3D earthquake locations, focal mechanisms and stress tensor distribution in a 16‐month interval covering the 2018 Mt. Etna flank eruption, enabled us to investigate the relationship between magma intrusion and structural response of the volcano and shed light on the dynamic processes affecting the instability of Mt. Etna.
Salvatore Alparone +9 more
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Abstract3D earthquake locations, focal mechanisms and stress tensor distribution in a 16‐month interval covering the 2018 Mt. Etna flank eruption, enabled us to investigate the relationship between magma intrusion and structural response of the volcano and shed light on the dynamic processes affecting the instability of Mt. Etna.
Salvatore Alparone +9 more
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Bulletin of Volcanology, 1991
We present results of study of the best-documented eruptions of Pavlof volcano in historic time. The 1986 eruptions were mostly Strombolian in character; a strong initial phase may have been Vulcanian. The 1986 activity erupted at least 8×106 m3 of feldspar-phyric basaltic andesite lava (SiO2=53–54%), and a comparable volume of wind-borne tephra ...
McNutt, Stephen R. +2 more
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We present results of study of the best-documented eruptions of Pavlof volcano in historic time. The 1986 eruptions were mostly Strombolian in character; a strong initial phase may have been Vulcanian. The 1986 activity erupted at least 8×106 m3 of feldspar-phyric basaltic andesite lava (SiO2=53–54%), and a comparable volume of wind-borne tephra ...
McNutt, Stephen R. +2 more
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Journal of Seismology, 1998
We analysed earthquakes at Mt. Etna for the period 1983–1991 using a method that weights uncertainties in hypocentral location. Three-dimensional distributions of ‘hypocentral probability’ and ‘energy density’ were studied, and two first-order volcano-tectonic structures identified.
GRESTA, Stefano +3 more
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We analysed earthquakes at Mt. Etna for the period 1983–1991 using a method that weights uncertainties in hypocentral location. Three-dimensional distributions of ‘hypocentral probability’ and ‘energy density’ were studied, and two first-order volcano-tectonic structures identified.
GRESTA, Stefano +3 more
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Introduction to quantitative volcano seismology
2013Overview Recent technological developments and increases in the seismological instrumentation of volcanoes now allow the surface effects of subterranean volcanic processes to be imaged in unprecedented detail. The wealth and accuracy of resulting seismic data have allowed the identification of oscillatory behaviors that are intimately related to ...
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Journal of Volcanology and Geothermal Research, 2012
Abstract The reconstruction of the extensional active tectonic structures on the eastern flank of Mt. Etna and of the related earthquakes, allowed the analysis of fault parameters for more than 50 episodes of coseismic ground rupture for the last 250 years.
DE GUIDI, GIORGIO +2 more
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Abstract The reconstruction of the extensional active tectonic structures on the eastern flank of Mt. Etna and of the related earthquakes, allowed the analysis of fault parameters for more than 50 episodes of coseismic ground rupture for the last 250 years.
DE GUIDI, GIORGIO +2 more
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