Results 71 to 80 of about 4,503 (228)
Optimal Flood Discharge Scheduling to Alleviate Vibration Under Gate Operational Rules
Journal of Flood Risk Management, Volume 18, Issue 1, March 2025.ABSTRACT The concomitant vibration of flood discharge, which would cause structure damages to hydraulic infrastructure and thus incurs threats to nearby communities, has rarely been addressed yet cries for an effective solution in discharge scheduling of sluice gates. This work improves on the traditional practice (Model‐I) that mainly aims to restrain
Zetai Yang +3 more
wiley +1 more source
The utility of infrasound in global monitoring of extraterrestrial impacts: A case study of the 23 July 2008 Tajikistan bolide [PDF]
The Astronomical Journal, 2024Among various observational techniques used for detection of large bolides on a global scale is a low frequency sound known as infrasound. Infrasound, which is also one of the four sensing modalities used by the International Monitoring System (IMS), offers continuous global monitoring, and can be leveraged for planetary defense. Infrasonic records can
arxiv +1 more source
Infrasound generation by tornadic supercell storms [PDF]
, 2008 Acoustic wave generation by turbulence in the stratified, moist atmosphere is studied. It is shown that in the saturated moist air turbulence in addition to the Lighthill's quadrupole and the dipole sources of sound related to stratification and temperature fluctuations, there exist monopole sources related to heat and mass production during the ...
arxiv +1 more source
Journal of Geophysical Research: Planets, Volume 130, Issue 2, February 2025.Abstract We investigate Gravity Waves (GWs) in the lower atmosphere of Mars based on pressure timeseries acquired by the InSight lander. We compile a climatology showing that most GW activity detected at the InSight landing site takes place after the sunrise and sunset; they are almost absent during the aphelion season, and more prominent around the ...
J. Hernández‐Bernal +4 more
wiley +1 more source
Earth, Planets and Space, 2021 The Iwo-yama volcano of the Kirishima Volcanic Complex in Japan had a small phreatic eruption in April 2018, which newly formed multiple vents. The activity was recorded by two infrasound sensors and two monitoring cameras, which had been installed ...
Dan Muramatsu +2 more
doaj +1 more source
Locating Thunder Source Using a Large-Aperture Micro-Barometer Array
Frontiers in Earth Science, 2021 Lightning generates sound waves across a wide range of frequencies, including infrasonic waves below 20 Hz. Source mechanism for these low frequency pulses is still area for debate.
Jan Rusz, Jaroslav Chum, Jiří Baše
doaj +1 more source
Bolide infrasound signal morphology and yield estimates: A case study of two events detected by a dense acoustic sensor network [PDF]
The Astronomical Journal, Vol. 169, No. 4, 15pp (2025)Two bolides (2 June 2016 and 4 April 2019) were detected at multiple regional infrasound stations with many of the locations receiving multiple detections. Analysis of the received signals was used to estimate the yield, location and trajectory, and the type of shock that produced the received signal.
arxiv +1 more source
Spectrum of infrasound radiation from supercell storms [PDF]
, 2010 We consider the generation of acoustic waves by turbulent convection and perform spectral analysis of a monopole source of sound related to the heat production by condensation of moisture. A quantitative explanation of the correlation between intensity of infrasound generated by supercell storms and later tornado formation is given.
arxiv +1 more source
Scalable, symmetric atom interferometer for infrasound gravitational wave detection [PDF]
AVS Quantum Sci. 6, 044404 (2024), 2019 We propose a terrestrial detector for gravitational waves with frequencies between 0.3 Hz and 5 Hz. Therefore, we discuss a symmetric matter-wave interferometer with a single loop and a folded triple-loop geometry. The latter eliminates the need for atomic ensembles at femtokelvin energies imposed by the Sagnac effect in other atom interferometric ...
arxiv +1 more source
Evidence for an infrasound waveguide [PDF]
Geophysical Research Letters, 2006 On May 30, 2005 eight strongly dispersed infrasound signals were recorded at one seismo‐acoustic array in the Republic of Korea. Phase‐matched filtering and a forward modeling technique were used to determine the nature of the dispersion. The most likely explanation for these dispersed infrasound signals are that the dispersion is due to propagation ...
Eugene Herrin +2 more
openaire +2 more sources