Results 31 to 40 of about 4,503 (228)

On the Measurement of Infrasound [PDF]

open access: yesGeophysical Journal of the Royal Astronomical Society, 2010
Summary The physical properties and propagation characteristics of atmospheric infrasound determine the techniques and instrumentation used for its measurement. The physical properties which influence the design of the measurement system for infrasound are summarized, and the techniques and instrumentation used for measurement are described ...
Alfred J. Bedard, Richard K. Cook
openaire   +2 more sources

International Monitoring System infrasound data products for atmospheric studies and civilian applications [PDF]

open access: yesEarth System Science Data, 2022
The International Monitoring System (IMS) was established in the late 1990s for verification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Upon completion, 60 infrasound stations distributed over the globe will monitor the Earth's atmosphere for ...
P. Hupe   +4 more
doaj   +1 more source

Quantized Constant-Q Gabor Atoms for Sparse Binary Representations of Cyber-Physical Signatures

open access: yesEntropy, 2020
Increased data acquisition by uncalibrated, heterogeneous digital sensor systems such as smartphones present new challenges. Binary metrics are proposed for the quantification of cyber-physical signal characteristics and features, and a standardized ...
Milton A. Garcés
doaj   +1 more source

Evidence for Short Temporal Atmospheric Variations Observed by Infrasonic Signals: 1. The Troposphere

open access: yesEarth and Space Science, 2022
Infrasound monitoring is used in the forensic analysis of events, studying the physical processes of sources of interest, and probing the atmosphere.
G. Averbuch   +3 more
doaj   +1 more source

Detections of Infrasound Waves From Water Discharges at a Hydroelectric Dam: Implementation of Timely Warnings for Unexpected Discharge Events

open access: yesGeophysical Research Letters, 2023
Water discharges at hydroelectric dams on the Imjin River, which flows through North and South Korea, generate abrupt water level increases downstream. We assessed infrasound signals from water discharges using an infrasound array located ∼32 km from the
Il‐Young Che   +4 more
doaj   +1 more source

Assimilation of atmospheric infrasound data to constrain tropospheric and stratospheric winds [PDF]

open access: yesQuarterly Journal of the Royal Meteorological Society, 2020, 2020
This data assimilation study exploits infrasound from explosions to probe an atmospheric wind component from the ground up to stratospheric altitudes. Planned explosions of old ammunition in Finland generate transient infrasound waves that travel through the atmosphere.
arxiv   +1 more source

Ambient infrasound noise [PDF]

open access: yesGeophysical Research Letters, 2005
The ambient infrasound noise environment is characterized for 21 globally distributed infrasound arrays in the frequency band of 0.03 to 7 Hz. Power Spectral Density (PSD) is measured for one site of each array for 21 intervals at each of four times of day from January 2003 through January 2004.
G. Eli Baker   +2 more
openaire   +2 more sources

A psychoacoustical study to investigate the perceived unpleasantness of infrasound combined with audio-frequency sound

open access: yesActa Acustica, 2020
At many immission sites of infrasound (frequency f 
Burke Elisa   +2 more
doaj   +1 more source

Infrasound Thunder Detections across 15 Years over Ivory Coast: Localization, Propagation, and Link with the Stratospheric Semi-Annual Oscillation

open access: yesAtmosphere, 2021
Every day, about one thousand thunderstorms occur around the world, producing about 45 lightning flashes per second. One prominent infrasound station of the International Monitoring System infrasound network of the Comprehensive Nuclear-Test-Ban Treaty ...
Thomas Farges   +5 more
doaj   +1 more source

Remotely imaging seismic ground shaking via large-N infrasound beamforming

open access: yesCommunications Earth & Environment, 2023
Seismic ground motion creates low-frequency atmospheric sound (infrasound) that is detectable at remote sensor arrays. However, earthquake infrasound signal analysis is complicated by interference between multiple waves arriving at sensors simultaneously,
Jacob F. Anderson   +3 more
doaj   +1 more source

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