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The geodynamics of Mt. Etna volcano during and after the 1984 eruption
Mt. Etna earthquakes focal mechanisms stress field eruption
2015/10/8
Data concerning M > 2.5 earthquakes that occurred at Mt. Etna volcano (Sicily, Italy) during the period April 15th - October 29th, 1984 are here presented and discussed. Only those events with reliabl...
Giuseppe Imbò and his contribution to volcano seismology
Mt. Vesuvius Imbò Volcanic tremor
2015/10/8
Together with Fusakichi Omori and Kenzo Sassa, Giuseppe Imbò is one of the founders of volcano seismology. Imbò's novel idea in volcanic tremor analysis was the introduction of what he called "numeri ...
Volcanic tremor associated with eruptive activity at Bromo volcano
volcanic tremor broadband seismology
2015/10/8
Three broadband stations were deployed on Bromo volcano, Indonesia, from September to December 1995. The analysis of the seismograms shows that the signals produced by the volcanic sources cover the f...
Listening carefully: unique observations of harmonic tremor at Lascar volcano, Chile
volcano seismology harmonic tremor
2015/10/8
During the deployment of Proyecto de Investigación Sismológica de la Cordillera Occidental 94 (PISCO'94) in the Atacama Desert of Northern Chile, a broadband seismic station and a network of three sho...
Analysis and quasistatic FE modeling of long period impulsive events associated with explosions at Stromboli volcano (Italy)
volcano seismology long-period measurements Stromboli finite element calculations volcano sources
2015/10/8
Broadband seismic measurements performed in 1995 and 1996 in the summit region of Stromboli are analyzed. The experiment in 1995 used an array of four Guralp seismometers and one Wielandt-Streckeisen ...
Observations of two special kinds of tremor at Galeras volcano, Colombia(1989-1991)
Galeras volcano harmonic tremor spasmodic tremor degassing activity resonance crack
2015/10/8
Since the reactivation of Galeras volcano in 1988 its seismic activity has been dominated by a variety of LP waveforms and tremor events. Some of these signals occurred as a response to volcanic activ...
Tornillo seismic events at Galeras volcano, Colombia: a summary and new information from broadband three-component measurements
volcanoes seismic events broadband record tornillos Galeras volcano
2015/10/8
Long-duration events have been recorded at several active, andesitic volcanoes. Their main characteristics are a single, sharp frequency peak, and an exceptionally long coda. Because their seismograms...
The anatomy of a tornillo: puzzles from three-component measurements at Galeras volcano (Colombia)
Galeras tornillo polarizations analytic function parametrization
2015/10/8
Many of the recent ash eruptions of Galeras volcano (Colombia) have been preceded by tornillos. These unusual seismic events of unknown origin have screw-like profiles on seismograms and can last up t...
Finite element analysis of ground deformation due to dike intrusion with applications to Mt. Etna volcano
FEM ground deformation dike intrusion real medium
2015/9/15
A 2D finite elements study was carried out to analyse the effects caused by dike intrusion inside a heterogeneous medium and with a realistic topography of Mt. Etna volcano. Firstly, the method (dimen...
Fluid geochemistry and seismic activityin the period 1998-2002 at Turrialba Volcano (Costa Rica)
volcanic gases volcanic hazard geochemical monitoring geophysical monitoring Turrialba Volcano
2015/9/15
Turrialba Volcano, located in Central-Southern Costa Rica, has been characterized, since the last period of eruptive activity in 1884-1886, by a weak and discontinuous fumarolic activity in the wester...
A new active volcano in the Tyrrhenian Sea?
seismicity and volcanic activity in deep marine areas fibre-optic cable failure Southern Tyrrhenian Sea
2015/9/7
A strong earthquake occurred in 2002 offshore from the northern coast of Sicily in the Southern Tyrrhenian Sea (Italy), and was followed by a series of hundreds of aftershocks. Communications through ...
Seismic-induced accelerations detected by two parallel gravity meters in continuous recording with a high sampling rate at Etna volcano
gravimeters earthquakes seismic-induced effects gravity fluctuations resonance
2015/9/1
We analyse a microgravity data set acquired from two spring LaCoste & Romberg gravity meters operated in parallel at the same site on Etna volcano (Italy) for about two months (August September 2005)....
Experimental studies of anomalous radon activity in the Tlamacas Mountain, Popocatepetl Volcano area, México: new tools to study lithosphere-atmosphere coupling for forecasting volcanic and seismic events
atmosphere electricity Litosphere-Atmosphere coupling
2015/8/24
This study presents and discusses the results of soil radon monitoring at three different volcano sites and one reference site, from December 2007 to January 2009. This relates to the activity of the ...
Advances in seismic monitoring at Deception Island volcano (Antarctica) since the International Polar Year
Volcano monitoring Seismic network Seismic array Deception Island volcano International Polar Year
2015/8/17
Deception Island is an active volcano located in the south Shetland Islands, Antarctica. It constitutes a natural laboratory to test geophysical instruments in extreme conditions, since they have to e...
Two types of adakites revealed by 238U-230Th disequilibrium from Daisen Volcano, southwestern Japan
adakite U-Th radioactive disequilibrium Daisen slab melting subduction
2017/8/9
Daisen volcano is located on the Quaternary volcanic front in southwestern Japan. The volcano is composed mainly of andesite and dacite, which chemically resemble adakites, with high Al2O3 and Sr/Y, s...