Results 1 to 10 of about 530 (160)
Coupling Between Magmatic Degassing and Volcanic Tremor in Basaltic Volcanism [PDF]
Frontiers in Earth Science, 2018 Magmatic degassing, typically measured as SO2 flux, plays a fundamental role in controlling volcanic eruption style and is one of the key parameters used by volcano observatories to assess volcanic unrest and detect eruption precursors.
Tommaso Caltabiano +2 more
exaly +6 more sources
A strength inversion origin for non-volcanic tremor [PDF]
Nature Communications, 2022 Subduction plate boundaries have enigmatic seismic tremor that is often associated with surges in creep across these boundaries. Here, the authors use multiple approaches to show how blocks of weak rocks in a stronger matrix can explain both the ...
Paola Vannucchi +5 more
doaj +7 more sources
Backprojection of volcanic tremor [PDF]
Geophysical Research Letters, 2014 Backprojection has become a powerful tool for imaging the rupture process of global earthquakes. We demonstrate the ability of backprojection to illuminate and track volcanic sources as well. We apply the method to the seismic network from Okmok Volcano, Alaska, at the time of an escalation in tremor during the 2008 eruption.
Matthew Haney
exaly +2 more sources
Energy threshold changes in volcanic activity at Mt. Etna (Italy) inferred from volcanic tremor [PDF]
Scientific Reports, 2022 From the 2010s on, pattern classification has proven an effective method for flagging alerts of volcano unrest before eruptive activity at Mt. Etna, Italy.
Horst Langer +3 more
doaj +2 more sources
Duration-amplitude distribution of volcanic tremor [PDF]
Journal of Geophysical Research, 2003 The duration‐amplitude distribution of volcanic tremor was examined in eight volcanoes and one geothermal area. An exponential model, implying a scale‐bound source process, is found to be a better fit to the data than a power law (scale invariant) model.
Benoit, John P. +2 more
exaly +3 more sources
Geophysical Research Letters, 2019 We present a method for automatic location of dominant sources of seismovolcanic tremor in 3‐D, based on the spatial coherence of the continuously recorded wavefield at a seismic network.
Julien de Rosny +2 more
exaly +2 more sources
Observations of volcanic earthquakes and tremor at Deception Island - Antarctica
Annals of Geophysics, 1999 Deception Island - South Shetlands, Antarctica is site of active volcanism. Since 1988 field surveys have been carried out with the aim of seismic monitoring, and in 1994 a seismic array was set up near the site of the Spanish summer base in order to ...
J. Morales +7 more
doaj +6 more sources
Geosciences (Switzerland), 2019 The NEMO-SN1 seafloor observatory, located 2100 m below sea level and about 40 km from Mt. Etna volcano, normally records a background seismic signal called oceanographic noise.
Tiziana Sgroi +2 more
exaly +3 more sources
Harmonic tremor from the deep part of Hakone volcano
Earth, Planets and Space, 2022 The feeding system of magmatic fluid from the volcanic root to a shallow magma reservoir remains a poorly understood issue. Seismic events, including volcanic tremors and low-frequency earthquakes, in a deep part beneath volcanos are key observations for
Yohei Yukutake +3 more
doaj +1 more source
Mathematical model for volcanic harmonic tremors [PDF]
Scientific Reports, 2019 AbstractHarmonic tremors consist in the release of infrasonic energy associated with volcanic activity. The typical frequency range of harmonic tremors is 0.1–12 Hz. We suppose that the harmonic tremors are due to the formation of bubbles entrapped in cavities that oscillate converting thermal energy into mechanic energy.
Montegrossi G.[1 +5 more
openaire +4 more sources