Latest Underwater acoustics Stories
Brett Smith for redOrbit.com - Your Universe Online Along with negatively impacting marine life and global climate change, the acidification of the Earth’s oceans could have the unintended side effect of changing the acoustics beneath the water’s surface. New research suggests that a future, more acidic ocean would resemble the one that existed around 110 million years ago, when dinosaurs still roamed both the land and sea. Climatologists have been raising concerns in recent years...
April Flowers for redOrbit.com - Your Universe Online Noise pollution is a problem that plagues us all. Loud cars and trucks, music, airplanes and more create a constant cacophony we have to learn to block out of our conscious mind in order to deal with our lives. However, we aren't the only ones suffering from too much noise. According to a paper published in Conservation Biology, high levels of background noise, mainly due to ships, have reduced the ability of critically endangered...
Lawrence LeBlond for redOrbit.com - Your Universe Online Dolphins can perform complex math equations when hunting, suggesting that these animals are far more skilled mathematically than scientists had previously given them credit for, according to new research published in the journal Proceedings of the Royal Society A. The inspiration for the study came after lead author Tim Leighton, of the University of Southampton, watched an episode of Blue Planet on the Discovery Channel. During...
UK scientists will measure the effect on the marine environment and wildlife of devices that harness tide and wave energy using sonar technology that has, for the first time, been successfully deployed on the seabed. Renewable energy from tidal currents can be generated using turbines in the tidal flow, and wave energy can be captured in a number of different ways. FLOWBEC (Flow and Benthic Ecology 4D) is a three-year, £1.2 million project that brings together a consortium of researchers...
DALLAS, July 2, 2012 /PRNewswire/ -- Texas Instruments Incorporated (TI) (NASDAQ: TXN) announced that G. Clifford Carter, an engineer whose pioneering contributions to determining and using coherence and time-delay estimation have had lasting impact on the field of signal processing including sonar detection, classification and localization, was honored by IEEE with the TI-sponsored 2012 IEEE Jack S. Kilby Signal Processing Medal. The medal was presented on June 30, 2012 at the IEEE...
The following are excerpts of selected lay-language papers. The entire collection can be found here: http://www.acoustics.org/press/163rd/lay_lang.html Lay-language Paper Highlights: 1. Trapping Microorganisms Using Cylindrical Standing Waves and Its Application to Water Purification 2. Auditory Depth Control: Investigation Associated Physical Parameters that Make a 3-D Sound Image Project Out of Your TV 3. Speech Perception Development in Monolingual Infants and Bilingual Infants...
The coupled normal mode method is a powerful approach for solving range-dependent propagation problems in underwater acoustics. An important area of study is to improve stability and efficiency so as to be able to deal with complex scenarios in a realistic environment. Professor LUO Wenyu and his group from the State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, set out to tackle this problem. After several years of innovative research, they have developed...
A group of biologists from Denmark and the US led by Jakob Christensen-Dalsgaard, University of Southern Denmark, and Catherine Carr, University of Maryland, have shown that the turtle ear is specialized for underwater hearing. The new discovery is published in Proceedings of the Royal Society B March 21st , Special features of the turtle ear – a large, air-filled middle ear and a movable tympanic disk increase its sensitivity for underwater sound. Laser measurements of disk vibrations in...
VANCOUVER, British Columbia, March 15, 2012 /PRNewswire/ -- Northstar Electronics, Inc. (OTCQB: NEIK), specializing in sonar subcontracting for the defense and security sector, is announcing a letter of intent to purchase Echotec Sonar Corporation, a cutting-edge innovator of High Definition Omni Sonar© (HDOS) technology, specifically targeted for the defense, scientific, commercial shipping and commercial fisheries markets. Northstar has offered 10,000,000 shares of restricted...
University of Massachusetts Amherst fish biologists have published one of the first studies of deep-sea fish sounds in more than 50 years, collected from the sea floor about 2,237 feet (682 meters) below the North Atlantic. With recording technology now more affordable, Rodney Rountree, Francis Juanes and colleagues are exploring the idea that many fish make sounds to communicate with each other, especially those that live in the perpetual dark of the deep ocean. Though little is known at...
