Latest Underwater acoustics Stories

Warm Water Causes Arctic Glaciers To Sizzle As They Melt
2013-11-28 06:11:28

[ Watch the Video: Melting Glacial Ice Has Its Own Sound ] April Flowers for redOrbit.com - Your Universe Online One of the most prominent sounds of a warming planet has been recorded and identified by scientists at the University of Alaska: the sizzle of glacial ice as it melts into the sea. Trapped air bubbles squirting out of the disappearing ice causes a noise that might provide clues to the rate of glacier melt and help researchers better monitor the fast-changing polar...

2013-07-30 23:01:03

Fenstermaker's Underwater Acoustic specialists collaborate with the Louisiana Department of Transportation & Development to use advanced technologies and progressive methods in addressing America's failing infrastructure with a pioneer statewide underwater bridge inspection project. (PRWEB) July 30, 2013 Summer is in full swing, but the grades posted in the 2013 Report Card for America’s Infrastructure by the American Society of Civil Engineers (ASCE) are downright chilling....

Ocean Acoustics Changing
2012-10-19 14:07:43

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...

Underwater Noise Pollution Impedes Whale Communications
2012-08-16 06:01:53

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...

Are Dolphins Math Whizzes?
2012-07-18 16:42:40

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....

2012-07-11 05:35:31

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...

2012-05-11 14:47:31

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...

2012-04-10 10:10:42

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...

2012-03-21 14:35:09

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...

Word of the Day
  • A Roman unit of weight, 1⁄1728 of a pound.
  • A weight of four grains used in weighing gold and precious stones; a carat.
  • In anatomy, a formation suggesting a husk or pod.
  • The lowest unit in the Roman coinage, the twenty-fourth part of a solidus.
  • A coin of base silver of the Gothic and Lombard kings of Italy.
'Siliqua' comes from a Latin word meaning 'a pod.'