Results 41 to 50 of about 4,692 (210)

Predicting Atmospheric Effective Sound Speed Using Synthetic Infrasound and Machine Learning

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract We introduce a machine learning (ML) model that reconstructs atmospheric conditions at the location of an explosive source using regionally recorded synthetic infrasound. A convolutional neural network (CNN) processes full waveforms and source‐receiver geometries to estimate the vertical profile of effective sound speed.
Alex Witsil, Stefan Awender, David Fee, Roger Waxler, Mark Leidig   +4 more
wiley   +1 more source

Observational Evidence for Wind‐Driven Low‐Pass Filtering of Infrasound at Short Range

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Infrasound from controlled explosions provides a unique opportunity to isolate atmospheric effects on propagation. We report observations from two campaigns in May and October 2024, each featuring 10‐ton TNT‐equivalent controlled surface chemical explosions recorded by a dense network of 31 single‐sensor stations within 23 km.
Elizabeth A. Silber, Daniel C. Bowman, Sasha Egan, Lawrence Burkett, Michael Fleigle, Keehoon Kim, Tesla Newton, Loring P. Schaible, Richard Sonnenfeld, Nora Wynn, Jonathan Snively   +10 more
wiley   +1 more source

Back-Azimuth Estimation of Air-to-Ground Coupled Infrasound from Transverse Coherence Minimization

The Seismic Record, 2023
We present the transverse coherence minimization method (TCM)—an approach to estimate the back-azimuth of infrasound signals that are recorded on an infrasound microphone and a colocated three-component seismometer.
Jordan W. Bishop, Matthew M. Haney, David Fee, Robin S. Matoza, Kathleen F. McKee, John J. Lyons   +5 more
doaj   +1 more source

Six‐Component Electromagnetic Wave Measurements of Sprite‐Associated Lightning

Radio Science, Volume 61, Issue 2, February 2026.
Abstract Low frequency electromagnetic waves emitted by sprite‐producing lightning are normally measured using vertical electric fields or horizontal magnetic fields. Here we report for the first time the simultaneous measurement of electromagnetic waves from sprite‐producing lightning in all six electromagnetic field components Ex,Ey,Ez,Hx,Hy,andHz ...
Martin Füllekrug, Michael Kosch, Gavin Dingley, Xue Bai, Liliana Macotela   +4 more
wiley   +1 more source

Evidence for Virtual Source‐Receiver Refractions in Cross Correlations of Infrasonic Ambient Noise

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Seasonal variability in source activity and atmospheric temperature were retrieved from 11 years of infrasonic ambient noise. Variable lag times between an array and single microbarometer were obtained from envelopes of cross‐correlation functions. Beamforming and one‐bit normalization significantly enhanced the stationary phase.
L. G. Evers, J. D. Assink, J. T. Fricke
wiley   +1 more source

Atmospheric Specifications for Infrasound Studies: 1. Operational Analyses

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 1, 16 January 2026.
Abstract Operational analysis products issued by weather services are needed for the Comprehensive Nuclear‐Test‐Ban Treaty's (CTBT) infrasound monitoring activities. They provide atmospheric specifications as high as 80 km altitude. They are used to feed propagation simulations designed to characterize sources of interest.
S. Kristoffersen, C. Listowski, R. Wing, S. Khaykin, G. Baumgarten, A. Hauchecorne, T. Farges, A. Le Pichon, J. Vergoz   +8 more
wiley   +1 more source

The Dominant Source Mechanism of Infrasound Generation in Powder Snow Avalanches

Geophysical Research Letters
Powder snow avalanches (PSAs) radiate infrasound energy, yet the source mechanism remains unclear, limiting hazard monitoring and mitigation with infrasound‐based technologies.
B. Sovilla, E. Marchetti, M. L. Kyburz, A. Köhler, P. Huguenin, I. Calic, M. J. Kohler, E. Suriñach, C. Pérez‐Guillén   +8 more
doaj   +1 more source

INFRASOUND WAVE GENERATED BY THE TUNGUSKA CELESTIAL BODY: AMPLITUDE DEPENDENCE ON DISTANCE

Radio Physics and Radio Astronomy, 2018
Purpose: The study is concerned with the features of variations in the amplitude of infrasound wave propagating through the terrestrial atmosphere at global-scale distances.
L. F. Chernogor, N. B. Shevelev
doaj   +1 more source

A simple method to evaluate the air-to-ground coupling efficiency: a tool helping the assessment of seismic/infrasonic energy partitioning during an eruption

Earth, Planets and Space, 2021
A volcanic eruption transmits both seismic and infrasound signals. The seismo-acoustic power ratio is widely used to investigate the eruption behaviors and the source dynamics.
Mie Ichihara, Kazuya Yamakawa, Dan Muramatsu   +2 more
doaj   +1 more source

Study on Optimization of Infrasound Filtering Method for Coal Sample Failure under Load

Frontiers in Earth Science, 2022
Effective filtering of the infrasound signal generated by coal samples is the basis for realizing the prediction of the infrasound of coal sample damage.
Jianguo Zhang, Man Wang, Bing Jia, Bing Jia, Yujie Wang   +4 more
doaj   +1 more source