Results 41 to 50 of about 1,132 (177)

Seismic Tremor as a Precursor to Hydrothermal Explosions Near Mutnovsky Volcano (Kamchatka)

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Mutnovsky Volcano, ∼70 km SW of Petropavlovsk‐Kamchatsky, exhibits persistent degassing, hosts active hydrothermal springs and the Mutnovsky Geothermal Power Plant (MGPP) on its slopes. Using the network covariance matrix approach, we analyzed seismic data recorded in 2023–2024 by 15 seismic stations operating around Mutnovsky Volcano.
Y. Berezhnev, N. Belovezhets, N. M. Shapiro, S. Abramenkov, I. Abkadyrov, S. Yaskevich, D. Chebrov, I. Koulakov   +7 more
wiley   +1 more source

Waterfall infrasound

The Journal of the Acoustical Society of America
Waterfalls are long-lasting sources of continuous infrasound with relevance to multiple acoustic fields. This paper presents infrasonic observations of 11 waterfalls spanning wide ranges of hydraulic power, discharge, and height. The waterfall recordings had similar spectral shapes, including an abrupt rise from low-frequency background noise, a mid ...
Jacob F. Anderson, Hugo D. Ortiz, Jesse R. Barber   +2 more
openaire   +1 more source

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

Journal 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

Spectral integration of infrasound at threshold [PDF]

The Journal of the Acoustical Society of America, 2020
The present study investigated the effect of the number of spectral components on the threshold in quiet of infrasound stimuli. Stimuli with one, two, or three sinusoidal components were presented monaurally to the ear with a low-distortion infrasound reproduction system.
Björn, Friedrich, Holger, Joost, Thomas, Fedtke, Jesko L, Verhey   +3 more
openaire   +2 more sources

Coupling UV Camera‐Derived SO2 Emission Rate and Thermal Output at Mount Etna: A Decadal Analysis Across Eruptive Phases

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract At persistently degassing open‐vent volcanoes, SO2 emissions are especially useful to capture the transition from quiescence to eruption, though accurate quantification is challenged by complex volcanic plume dynamics and limited resolution of observations. Here, we present an exceptionally long (∼10–year) record of SO2 emission rates from the
Giovanni Lo Bue Trisciuzzi, Alessandro Aiuppa, Marcello Bitetto, Mauro Coltelli, Francesco Ciancitto, Gaetana Ganci, Mimmo Palano, Giuseppe Bilotta, Emilio Pecora, Paolo Principato, Angelo Vitale, Dario Delle Donne   +11 more
wiley   +1 more source

Research on the Response Characteristics and Identification of Infrasound Signals in the Jialongcuo Ice Avalanche, Tibet

Remote Sensing, 2023
Due to the inability of remote sensing satellites to monitor avalanches in real time, this study focuses on the glaciers in the rear edge of Jialongcuo, Tibet, and uses infrasound sensors to conduct real-time monitoring of ice avalanches.
Yifang Zhang, Qiao Chen, Pengcheng Su, Dunlong Liu, Jianzhao Cui, Jilong Chen, Jianrong Ma, Qiao Xing, Fenglin Xu, Yuanchao Fan, Fangqiang Wei   +10 more
doaj   +1 more source

Seismo‐Acoustic Characterization and Array Processing of Dry‐ and Wet‐Snow Avalanches

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 7, July 2026.
Abstract Snow avalanches generate complex seismic and infrasound signals influenced by terrain, snow properties, flow regime, and avalanche size. In this controlled field study, we analyzed the seismo‐acoustic characteristics of three avalanches that released along the same path in the Dischma valley above Davos, Switzerland.
Christine Seupel, Cristina Pérez‐Guillén, Andreas Fichtner, Alec van Herwijnen   +3 more
wiley   +1 more source

A study on the effect of infrasound.

Nippon Jibiinkoka Gakkai Kaiho, 1989
In order to examine the influence of infrasound that is becoming topical in society, human beings and guinea pigs were exposed to infrasound. After exposure, the hearing level, vestibular functions and autonomic nervous functions of human beings were examined, and endocochlear potential (EP) and cochlear microphonics (CM) of guinea pigs were examined ...
openaire   +3 more sources

How the 29 July 2025 M8.8 Kamchatka Earthquake Shook the Ionosphere Over Japan

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract This study investigates the mid‐field (∼1,100–3,800 km) ionospheric response to the 29 July 2025 Kamchatka earthquake over Japan using multi‐instrument observations, raytracing, and numerical simulations. Total electron content (TEC) observations from GPS satellite G04 and Galileo satellite E10 show a maximum TEC perturbation of ∼0.5–0.85 TECU
R. K. Barad, E. Astafyeva, S. A. Sanchez, E. A. Kherani, I. D. Ouar, C. Maréchal   +5 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