Articles tagged with Infrasound
SwRI is using low frequency eddy current testing to detect and characterize subsurface flaws and cracks in bolt holes. This method will allow aircraft maintainers to assess damage progression and make repair decisions to keep the aircraft flying safely.
Researchers analyzed over 100,000 audio recordings from around the world to understand the factors that contribute to the diversity of bird sounds. The study found that larger birds tend to call at lower frequencies, which can indicate hunting pressure in landscapes.
Researchers found that geckos utilize the saccule, a part of their inner ear traditionally linked to balance, to detect low-frequency vibrations. This 'sixth sense' plays a complementary role in the geckos' normal hearing and sensory perception.
A new deep learning-based inverse design method allows for the optimization of complex acoustic metamaterials, reducing noise pollution while maintaining ventilation. The approach enables ultra-broadband sound attenuation across various peak frequencies.
Seismologists analyzed signals from underwater gas pipeline rupture, finding long-lasting seismic and infrasound signals. The signals decay slowly over thousands of seconds, similar to those detected from an underwater volcano or a pipeline venting gas.
Researchers created an inexpensive and effective sound insulation panel using pingpong balls as Helmholtz resonators, capturing ambient sound waves at their natural frequency. The design allows for adjustable acoustic properties and potential applications in various functionalities.
Researchers found that wandering albatrosses orientate towards areas of 'loud' microbarom infrasound when flying on long distance foraging trips. This suggests that they may perceive and respond to microbarom infrasound propagated over long distances.
Researchers at the University of Vienna discovered that domestic cats can produce low-pitched purring sounds without cyclical neural input. This finding contradicts previous theories and suggests a more complex brain-body connection in cat vocalization.
Researchers are using the OSIRIS-REx mission to record and characterize infrasound waves generated by the capsule as it moves through Earth's atmosphere. The data will improve scientists' ability to detect meteoroids and other objects moving at hypersonic speeds.
WVU linguists analyze speech recordings to determine how intensity and duration shape pronunciation in American English and Spanish. The two-year study aims to redefine sound patterns across languages.
The study used a battery-powered acoustic array to record Goliath grouper sounds at an artificial reef, assessing their presence by measuring acoustic activity and habitat distribution. The results showed that the model can be used to automatically process large amounts of acoustic data and provide detailed movements of marine organisms.
A new study at Tel Aviv University found that older bats do indeed suffer from age-related hearing loss, but at a relatively slow rate compared to humans. The researchers believe that bats have developed special adaptations to cope with their noisy environment, which could provide insights into human hearing loss.
Researchers found that infrasound sensors can improve magnitude determinations, providing complete data about strong earthquakes. The low-cost sensors, which detect air pressure changes caused by ground movement, can also enhance tsunami warnings and emergency responses.
A software program designed by Timothy G. Leighton predicts the environmental sounds of other planets and how human voices might change in distant worlds. The program uses acoustics and planetary science communities to learn about properties such as chemical composition, atmospheric temperature changes, and roughness of the ground.
Researchers will use seismoacoustic instruments to study the OSIRIS-REx capsule's re-entry, gathering data on shockwaves, infrasound, and atmospheric dynamics. This campaign aims to improve models of meteoroid flight and refine relationships between size, velocity, and infrasound signatures.
Research by the Alfred Wegener Institute found that low-frequency noise from human activities stresses crustaceans, mussels, and worms on the seafloor, impacting their ability to transform sediment and maintain ecosystem function. This could have far-reaching consequences for nutrient cycling and food availability in marine ecosystems.
Researchers discovered a relict group of singing insects produced pure-tone songs at low frequencies, enabling them to travel longer distances. This finding advances our understanding of ancient soundscapes and highlights the importance of bioacoustics in understanding insect behavior.
A new method can improve explosion detection by training computers to recognize synthetic infrasound signals, which reflect regional and global atmospheric changes. This approach broadens the usefulness of single-element infrasound microphones for detecting subtle explosion signals in near real-time.
A NTU Singapore study found that consumers associate higher-pitched commercials with healthier food products. The researchers also discovered a link between more stimulating visuals and consumer perceptions of healthiness.
A team of 76 scientists used multiple forms of technology to collect data on the Hunga Tonga-Hunga Ha'apai volcano eruption, which was measured globally by 53 infrasound monitors. The data revealed that infrasound waves traveled surprisingly far and accurately recorded the event's seismic activity.
Researchers verified the existence of an atmospheric acoustic duct using rocket launch data. Infrasound signals were detected within the duct, related to a Blue Origin rocket launch in April 2021. The duct may channel a variety of natural and anthropogenic sounds, including signals from earthquakes and ground explosions.
Researchers have discovered that the Matterhorn sways at a frequency of 0.42 Hertz, oscillating roughly in a north-south direction, with similar frequencies in an east-west direction. The mountain's summit experiences amplified vibrations up to 14 times stronger than the reference station at its base.
Researchers detected acoustic signals from 7 rocket types, including Space Shuttles and Falcon 9s, up to 9,000 km away. They identified different stages of flight for these rockets using infrasound signatures recorded at IMS stations.
A new system called GLINDA allows researchers to capture the unique sound signature of a tornado, improving understanding of its behavior and potential impact on false alarm rates. By measuring infrasound at close range, scientists can gain valuable insights into tornado production and reduce the number of deaths caused by these deadly...
Scientists are studying the infrasound signatures of tornadoes to develop more accurate prediction and warning systems. Researchers have found that these vibrations can travel long distances quickly and through different media, potentially allowing for early detection of tornadoes from far away.
Researchers discovered that ogre-faced spiders can detect both low- and high-frequency sounds using hairs and joint receptors on their legs. The spiders use these sensory systems to hunt flying insects by performing a choreographed backwards strike, which may be aided by directional hearing.
The InSight lander has detected gravity waves, surface swirling dust devils and the steady rumble of infrasound on Mars. The team also found daily pressure and temperature fluctuations stronger than on Earth, and convective vortices known as dust devils.
Researchers from Oklahoma State University and University of Nebraska-Lincoln have discovered that low-frequency sounds are emitted before tornado formation. These infrasound signals can be detected hours or even days in advance, providing potential warnings for severe weather events.
Researchers found that auroral crackling sounds are generated by magnetic storms and Schumann resonances, which activate sound waves in the atmosphere. The study used data from 25 sound events measured in Southern Finland during active Northern Lights displays.
A team of scientists used infrasonic microphones, seismometers, satellite, and ground camera images to calculate the Michigan bolide's time, location, height, and yield. The analysis could help assess near-Earth object threats and improve detection capabilities for clandestine nuclear tests.
A study found that a volcano's geometry impacts its sound waves, allowing scientists to better monitor activity and detect changes. Researchers believe listening to Kilauea's infrasound could help forecast potential eruptive hazards.
Researchers have discovered that tornado-producing storms emit infrasound waves that can be detected hundreds of miles away. By analyzing these waves, meteorologists may gain valuable insights into the formation processes and life cycle of tornadoes, enabling early warning systems and potentially saving lives.
Researchers used a rocket scanner to take the first whole-body CT scan of a minke whale, revealing insights on whale communication. The team modeled how whales hear low-frequency sounds using custom-developed computer simulation tools.
Researchers analyzed infrasound from Villarrica volcano to predict eruptions, finding a connection between sound waves and lava lake changes. The study suggests that infrasound could aid in forecasting volcanic eruptions hours or days ahead.
Researchers found that oysters rapidly closed their shells at sound frequencies between 10 and 1000 hertz in response to high-acoustic energies. This behavior suggests that oysters may 'hear' tidal cues, triggering appropriate behavior as the tide rises.
A study has identified a specific combination of mechanisms that allows auditory neurons to measure the difference between sound signal arrival times at the two ears with high accuracy. The researchers found that certain structural features of the nerve cells' wrapping play a crucial role in this process.
Researchers have successfully tested the sensitivity of balloon-borne infrasound detectors, detecting explosions up to 250 miles away. The high-altitude balloons were found to be effective at eliminating wind noise and amplifying infrasound signals.
Researchers are investigating whether seabirds use infrasound for navigation as they travel millions of kilometres across the ocean. The study aims to shed light on one of nature's unsolved questions and uncover how birds find their way year after year.
Researchers found a unique communication system in one group of crickets where females produce a vibrational signal after male calls, allowing them to locate each other. The study suggests this origin might be more common than previously thought and sheds light on the evolution of acoustic communication systems.
Research finds that Hanoks' earthen walls, paper windows, and wooden floors create a resonance effect, amplifying sound clarity and reverberation time. The unique acoustics of these traditional Korean houses make them suitable for playing classic instruments like zithers.
Allan D. Pierce, Professor Emeritus at Boston University, has been awarded the Acoustical Society of America (ASA) Distinguished Service Citation for his outstanding service to the organization. Pierce received the citation in recognition of his 15-year tenure as Editor-in-Chief.
Researchers tracked golden-winged warblers' migration and found they fled breeding grounds one to two days before powerful supercell storms. The birds sensed infrasound, a low-frequency sound wave that can travel thousands of kilometers, allowing them to alter their route and avoid severe weather.
Researchers at LMU Munich discovered that low-frequency signals activate measurable responses in auditory circuits, contrary to the assumption that the ear is unresponsive to these frequencies. The study found that low-frequency hum stimulates the cochlea and induces slow oscillations in spontaneous otoacoustic emissions.
Researchers discovered that homing pigeons rely on 'loft-specific infrasonic map cues' to navigate, which are disrupted when release sites are shielded from these low-frequency signals. This finding resolves a long-standing puzzle and sheds new light on the birds' impressive navigation abilities.
Researchers found that earthquakes generate most of their sound by pumping the atmosphere like a loudspeaker. This discovery has significant implications for assessing damage in the immediate aftermath of an earthquake, as infrasound can reveal important details about ground shaking.
Researchers discovered that elephants produce infrasounds by vibrating their large larynxes, similar to the human voice. This finding reveals the physical production mechanism behind these subaudible sounds, which play a crucial role in elephant communication and social life.
Researchers discovered that elephants produce infrasounds using the same flow-driven mechanism as human speech and other mammals. This finding suggests a wide range of applications for understanding animal communication and voice production.
Researchers found that low frequency sound causes severe lesions in cephalopod sensory organs, including statocysts. This damage can affect balance, spatial orientation, and other critical functions.
Researchers investigated the role of low-frequency auditory spatial cues in barn owls' ability to localize sounds. They found that these cues dominate azimuth representation, while high-frequency cues dominate elevation representation. These findings have implications for understanding sound localization in other species, including hum...
Scientists are using infrasound to monitor volcanoes in the Northern Mariana Islands, a U.S. commonwealth, for early warning of eruptions that could threaten passenger airlines and cargo ships. The technology aims to discriminate between different eruptive styles, improving alert systems for volcanic ash clouds.
Researchers at Scripps Institution of Oceanography have discovered a connection between the sound produced by volcanic eruptions and jet engines. By analyzing infrasound from Mount St. Helens and Tungurahua volcanoes, they found that the large-amplitude signals are generated in a similar way to smaller-scale man-made jets.
Scientists developed a new technique to discriminate between small earthquakes and mine blasts, achieving a success rate of 97%. Researchers also created the most detailed 3D model of the Hayward Fault System in Northern California, revealing that it poses the greatest risk for major quakes in the next 30 years.
Researchers have developed a system to detect landmines using sound waves, while also studying the water-absorbing properties of aged soot and its potential impact on climate models. Additionally, scientists have made new discoveries about natural lightning, including X-ray emissions during thunderstorms.
Scientists are exploring the potential of infrasound pulses to detect natural disasters such as tornadoes and volcanic eruptions. Infrasound pulses can also be used to monitor and forecast volcanic eruptions, potentially providing valuable warnings for communities at risk.
The new global network of listening posts will track atmospheric signals from diverse events like secret nuclear tests, volcanic eruptions, and hurricanes. Infrasound energy is generated by meteors, chemical explosions, supersonic aircraft, tornadoes, landslides, earthquakes, and volcanoes.
Researchers recorded tigers' growls and roars to analyze infrasound frequencies. The study suggests that infrasound may be the missing link in tiger communication and could have paralyzing effects on humans.
A Cornell University study reveals that insects, including crickets, possess categorical perception - the ability to distinguish between 'friend' and 'foe' sounds. Researchers used a test originally developed for human infants to demonstrate this ability in crickets, finding a dividing line at 16kHz.
A Cornell University team found no overt response from humpback whales to the Acoustic Thermometry of Ocean Climate (ATOC) simulation sounds in Hawaiian waters. The whales swam normally near the underwater speakers, with some even singing close to the speaker.