Results 101 to 110 of about 441,479 (240)

Numerical Simulations of 3D Scattering Structures Reveal Systematic Underestimation of Marsquake Magnitudes

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Determining marsquake magnitudes is essential for assessing seismic activity on Mars, yet previous estimates neglect three‐dimensional (3D) scattering effects. The exceptionally long‐lasting coda of the largest recorded marsquake, S1222a, provides a unique opportunity to quantify how crustal heterogeneities affect waveform propagation and ...
Mingwei Dai   +6 more
wiley   +1 more source

Automated Detection and Machine Learning‐Based Classification of Seismic Tremors Associated With a Non‐Volcanic Gas Emission (Mefite d’Ansanto, Southern Italy)

open access: yesGeochemistry, Geophysics, Geosystems
A major aim in the study of crustal fluids is the development of automatic methodologies for monitoring deep‐source, non‐volcanic gas emissions’ spatio‐temporal evolution.
S. Panebianco   +5 more
doaj   +1 more source

Fault‐Controlled Plumbing System Beneath Lipari Volcanic Island Revealed by Seismic Matrix Imaging

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Lipari Island hosts an active magmatic–hydrothermal system, but its deep plumbing architecture remains poorly resolved due to strong seismic scattering. We apply passive seismic matrix imaging to public vertical‐component cross‐correlation functions from the dense 2018 Lipari nodal array, recovering relative‐reflectivity structures to ∼10 km ...
Jia Wei, Qiancheng Liu, Ling Chen
wiley   +1 more source

Source‐Unbiased Subsurface Monitoring With Seismic Noise

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract This study addresses a key limitation of seismic noise interferometry for subsurface monitoring: the impact of non‐stationary sources on seismic velocity change estimates. Conventional methods rely on time‐period references, which can inherit source‐related effects when source conditions vary, biasing the estimated velocity changes.
Pilar Sánchez‐Pastor   +7 more
wiley   +1 more source

Temporal Changes of Seismic Velocity Caused by Volcanic Activity at Mt. Etna Revealed by the Autocorrelation of Ambient Seismic Noise

open access: yesFrontiers in Earth Science, 2019
On active volcanoes, ambient noise-based seismic interferometry can be a very useful monitoring tool as it allows to detect very slight variations in seismic velocity associated with magma transported toward the surface.
Raphael S. M. De Plaen   +6 more
doaj   +1 more source

Spectral and Waveform Cross-Correlation Analysis of Volcanic Tremor from The 2016 Eruption at Bromo Volcano, East Java

open access: yes, 2017
Bromo volcano is one of a series of active volcanoes in Indonesia, located on the Tengger caldera, Probolinggo, East Java. Bromo volcano has increased volcanic activity in the end 2015 until early 2016.
Meidi Arisalwadi   +2 more
semanticscholar   +1 more source

Seismic ground vibrations give advanced early-warning of subglacial floods

open access: yesNature Communications, 2020
Subglacial lakes and jökulhlaups (glacier outburst floods) are common in volcanic and glaciated environments, and can pose potential threats to communities living downstream. Here, the authors find that seismic tremor signals during subglacial floods can
Eva P. S. Eibl   +4 more
doaj   +1 more source

Tremor burst and triggering processes in Cascadia after the 2022 Hunga Tonga-Hunga Ha’apai volcanic eruption

open access: yesGeomatics, Natural Hazards & Risk
Episodic Tremors and Slip (ETS) are highly susceptible and sensitive to external stress perturbations. The tidal and remote triggering phenomena of tremors are well-documented globally, however, the significance of the delayed triggering mechanism ...
Sambit Sahoo   +5 more
doaj   +1 more source

Characteristics of volcanic tremor accompanying the September 24th, 1986 explosive eruption of Mt. Etna (Italy)

open access: yesAnnals of Geophysics, 1996
Features of the volcanic tremor recorded before, during and after the eruptive event which occurred at Mt. Etna on September 24th 1986, are described. The whole eruption was particularly short in time (about eight hours) and characterized by an extremely
R. Cristofolini, G. Lombardo, S. Gresta
doaj   +1 more source

Data_Sheet_1_Coupling Between Magmatic Degassing and Volcanic Tremor in Basaltic Volcanism.docx

open access: yes, 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.
Clive Oppenheimer (5350586)   +4 more
core   +1 more source

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