Results 11 to 20 of about 4,503 (228)

Infrasound as a Cue for Seabird Navigation [PDF]

Frontiers in Ecology and Evolution, 2021
Seabirds are amongst the most mobile of all animal species and spend large amounts of their lives at sea. They cross vast areas of ocean that appear superficially featureless, and our understanding of the mechanisms that they use for navigation remains ...
Samantha C. Patrick, Jelle D. Assink, Mathieu Basille, Susana Clusella-Trullas, Thomas A. Clay, Thomas A. Clay, Olivier F. C. den Ouden, Olivier F. C. den Ouden, Rocío Joo, Rocío Joo, Jeffrey N. Zeyl, Simon Benhamou, Jakob Christensen-Dalsgaard, Läslo G. Evers, Läslo G. Evers, Annette L. Fayet, Christine Köppl, E. Pascal Malkemper, Lucía Martina Martín López, Lucía Martina Martín López, Oliver Padget, Richard A. Phillips, Mark K. Prior, Pieter S. M. Smets, Pieter S. M. Smets, E. Emiel van Loon   +25 more
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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   +2 more sources

Annoyance of Audible Infrasound [PDF]

Journal of Low Frequency Noise, Vibration and Active Control, 1987
Contours of equal annoyance were determined for pure tones in the frequency range 4 – 31.5 Hz. The curves show a narrowing of the dynamic range of the ear at low frequencies. The same pattern is seen for equal loudness curves, and the results support the theory that the annoyance of infrasound is closely related to the loudness sensation.
Henrik Møller
openalex   +4 more sources

Infrasound and the Avian Navigational Map [PDF]

Journal of Navigation, 2001
Birds can accurately navigate over hundreds to thousands of kilometres, and use celestial and magnetic compass senses to orient their flight. How birds determine their location in order to select the correct homeward bearing (map sense) remains controversial, and has been attributed to their olfactory or magnetic senses.
Jonathan T. Hagstrum
openalex   +4 more sources

Infrasound detection of approaching lahars. [PDF]

Sci Rep, 2023
AbstractInfrasound may be used to detect the approach of hazardous volcanic mudflows, known as lahars, tens of minutes before their flow fronts arrive. We have analyzed signals from more than 20 secondary lahars caused by precipitation events at Fuego Volcano during Guatemala’s rainy season in May through October of 2022.
Johnson JB, Roca A, Pineda A, Mérida R, Escobar-Wolf R, Anderson JF, Mock J, Bosa A, Bejar G, P Waite G.   +9 more
europepmc   +4 more sources

Temporal integration of infrasound at threshold. [PDF]

PLoS One, 2023
Infrasounds are signals with frequencies below the classical audio-frequency range, i.e., below 20 Hz. Several previous studies have shown that infrasound is audible as well, provided that the sound level is high enough. Hence, the sound pressure levels at threshold are much higher than those in the classical audio-frequency range.
Friedrich B, Joost H, Fedtke T, Verhey JL.   +3 more
europepmc   +3 more sources

Bi-Stable Metamaterials with Intrinsic Memory for Selective Wave Filtering Based on Frequency and Amplitude. [PDF]

Adv Sci (Weinh)
By inducing phase changes in metamaterials using topological solitons, the authors show effective control of harmonic waves based on frequency, amplitude, and specific combinations of both. In addition, the metamaterial retains a record (i.e., have memory) of extreme events without changing its main functionality of either blocking or transmitting ...
Stenseng NN, Samak MM, Bilal OR.
europepmc   +2 more sources

The European Infrasound Bulletin [PDF]

Pure and Applied Geophysics, 2018
The European Infrasound Bulletin highlights infrasound activity produced mostly by anthropogenic sources, recorded all over Europe and collected in the course of the ARISE and ARISE2 projects (Atmospheric dynamics Research InfraStructure in Europe). Data includes high-frequency (> 0.7 Hz) infrasound detections at 24 European infrasound arrays from nine
Pilger C., Ceranna L., Ross J. O., Vergoz J., Le Pichon A., Brachet N., Blanc E., Kero J., Liszka L., Gibbons S., Kvaerna T., Nasholm S. P., Marchetti E., Ripepe M., Smets P., Evers L., Ghica D., Ionescu C., Sindelarova T., Ben Horin Y., Mialle P.   +20 more
openaire   +2 more sources

Acoustic Waves From a Distant Explosion Recorded on a Continuously Ascending Balloon in the Middle Stratosphere

Geophysical Research Letters, 2023
A helium‐filled mylar balloon carrying a smartphone and infrasound sensors ascended to a stratospheric height of 35 km over the surface detonation of a chemical explosive, with a total acoustic propagation distance of 127 km.
S. K. Popenhagen, D. C. Bowman, C. Zeiler, M. A. Garcés   +3 more
doaj   +1 more source

Autocorrelation Infrasound Interferometry

Journal of Geophysical Research: Solid Earth, 2021
AbstractSeismic and infrasound multistation ambient‐noise interferometry has been widely used to infer ground and atmospheric properties, and single‐station and autocorrelation seismic interferometry has also shown potential for characterizing Earth structure at multiple scales.
J. C. Anzieta, Stephen Hernandez, H. D. Ortiz, H. D. Ortiz, Jeffrey B. Johnson, Robin S. Matoza, Mario Ruiz   +6 more
openaire   +4 more sources