Results 81 to 90 of about 1,427 (180)

The influence of non‐regularly decaying coda wave envelopes upon the estimation of coda Q

open access: yesGeophysical Research Letters, 1996
The single isotropic scattering model proposed for the origin of seismic coda predicts a regularly decaying coda wave envelope. In real data however, this regular decay is often interrupted by non‐random arrivals (e.g. reflections) coming later in the coda.
John T. Doherty, Christopher J. Bean
openaire   +1 more source

FREQ‐NESS Reveals Age‐Related Differences in Frequency‐Resolved Brain Networks During Auditory Recognition and Resting State

open access: yesAnnals of the New York Academy of Sciences, Volume 1562, Issue 1, August 2026.
We adapted the FREQ‐NESS pipeline to event‐related MEG data from 140 adults during a melody‐recognition task, revealing an age‐related reorganization of frequency‐specific brain networks. Younger adults showed task‐related reduction in the prominence of alpha networks, whereas older adults maintained prominent slower alpha networks (8.6–10.0 Hz) across
Chiara Malvaso   +8 more
wiley   +1 more source

Improved subjective sleep quality in older adults by enhancing the GABAergic system in the sensorimotor cortex

open access: yesThe Journal of Physiology, Volume 604, Issue 15, Page 6506-6546, 1 August 2026.
Abstract figure legend Sleep disturbances are common in older adults, highlighting the need for accessible interventions to improve sleep quality. Eighteen older adults per group (balance training and control) were assessed before and after 12 weeks. The balance group increased GABA levels (magnetic resonance spectroscopy) and functional connectivity ...
Selin Scherrer   +7 more
wiley   +1 more source

Factors influencing seismic wave attenuation in the lithosphere in continental rift zones

open access: yesГеодинамика и тектонофизика, 2017
Attenuation of seismic waves in the crust and the upper mantle has been studied in three global rift systems: the Baikal rift system (Eurasia), the North Tanzanian divergence zone (Africa) and the Basin and Range Province (North America).
А. А. Dobrynina   +3 more
doaj   +1 more source

Seismic Coda Waves [PDF]

open access: yesMesoscopic Physics in Complex Media, 2010
L. Margerin   +6 more
openaire   +1 more source

High‐Resolution Imaging of a Distant M6 Intermediate‐Depth Earthquake Using Ocean‐Bottom DAS and Seismic Network

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Distributed Acoustic Sensing (DAS) provides dense, wide‐aperture observations potentially ideal for imaging earthquake rupture processes. By combining data from a ∼450 km‐long seafloor DAS array offshore Chile and a conventional seismic network, we image an Mw 6.0 intermediate‐depth earthquake ∼400 km away in Argentina, achieving km‐scale ...
Yuqing Xie   +6 more
wiley   +1 more source

Coda Wave Attenuation Characteristics for North Anatolian Fault Zone, Turkey

open access: yesOpen Geosciences, 2017
North Anatolian Fault Zone, on which large earthquakes have occurred in the past, migrates regularly from east to west, and it is one of the most active faults in the world.
Sertcelik Fadime, Guleroglu Mehmet
doaj   +1 more source

Coda wave interferometry during the heating of deep geothermal reservoir rocks

open access: yesGeothermal Energy, 2018
Coda wave interferometry (CWI) is a high-resolution technique that aims at tracking small changes in a diffusive medium from the time correlation of seismic waveforms.
Jérôme Azzola   +7 more
doaj   +1 more source

Estimating Surface Explosion Yield From Single‐Channel Infrasound Signals at Regional Distances With Random‐Forest Regression

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract When detonated on the Earth's surface, large explosions emit distinctive acoustic signatures that propagate over vast distances with relatively low attenuation in the form of infrasound. Infrasound stations hundreds of kilometers from the impulsive source can record the propagated pressure signal, atmospheric conditions permitting.
S. Awender, D. Fee, A. Witsil
wiley   +1 more source

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