Results 61 to 70 of about 4,944 (223)

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

ANOMALOUS SEISMO-ACOUSTIC WAVE PROPAGATION AND DETERMINATION SOURCE OF INFRASOUND

Proceedings of the Mongolian Academy of Sciences, 2017
The network of infrasound stations (I34MN) in Mongolia daily registers set of infrasound from various sources besides explosions. The data from explosions in mines in region and from other sources detected since 2000 to 2009 in seismic and infrasound ...
Bayarsaikhan Ch, Tungalag L, Lkhagvajav Ch, Alexis Le Pichon   +3 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

The InfraCyrus infrasound sensor

, 2011
Infrasound sensors are used for a wide range of geophysical applications as the monitoring of volcanic eruptions, the detection of bolides and the recording of infrasounds generated by earthquakes. In 2006 we started the development of cheap infrasound
D’Auria, L., Caputo, A., Buonocunto, C., Martini, M., Orazi, M.   +4 more
core   +1 more source

Rocket Launch Detection with Smartphone Audio and Transfer Learning

Signals
Rocket launches generate infrasound signatures that have been detected at great distances. Due to the sparsity of the networks that have made these detections, however, most signals are detected tens of minutes to hours after the rocket launch.
Sarah K. Popenhagen, Samuel Kei Takazawa, Milton A. Garcés   +2 more
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

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

Infrasound from the 2009 and 2017 DPRK rocket launches

, 2018
Supersonic rockets generate low-frequency acoustic waves, that is, infrasound, during the launch and re-entry. Infrasound is routinely observed at infrasound arrays from the International Monitoring System, in place for the verification of the ...
Evers, L.G. (author), J D Assink, P SM Smets, L G Evers, Assink, J. D. (author), Smets, P.S.M. (author)   +5 more
core   +1 more source

Frequency‐Dependent Acoustic Reflection Coefficients of Flat Ground Assessed Using the Sonic Boom From the OSIRIS‐Rex Sample Return Capsule Recorded on Free Flying Balloons

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Low frequency sound can travel great distances in planetary atmospheres. When these waves reflect off the air/ground interface, energy may be absorbed or transferred to mechanical waves in the subsurface. This study describes the direct and reflected acoustic wave generated by the re‐entry of the OSIRIS‐REx Sample Return Capsule captured on a ...
Daniel C. Bowman, Jonathan M. Lees, Siddharth Krishnamoorthy, Elizabeth A. Silber, Jacob S. Izraelevitz, Ashish Goel, Emalee Hough, Zach Yap, Mirza Samnani, Michael J. Fleigle, Justin R. LaPierre, James A. Cutts, Attila Komjathy   +12 more
wiley   +1 more source

UAS‐Based Observations of Infrasound Directionality at Stromboli Volcano, Italy

Geophysical Research Letters, 2023
Infrasound (low frequency sound waves) can be used to monitor and characterize volcanic eruptions. However, infrasound sensors are usually placed on the ground, thus providing a limited sampling of the acoustic radiation pattern that can bias source size
Alexandra M. Iezzi, Richard M. Buzard, David Fee, Robin S. Matoza, Julia E. Gestrich, Arthur D. Jolly, Markus Schmid, Valeria Cigala, Ulrich Kueppers, Caron E. J. Vossen, Corrado Cimarelli, Giorgio Lacanna, Maurizio Ripepe   +12 more
doaj   +1 more source