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Latest Sonar Stories

Military Sonar Disrupts Behavior Of Blue Whales
2013-07-03 14:31:38

Michael Harper for redOrbit.com - Your Universe Online A new study has found whales do not care for the sound of the sonar used by militaries to detect submarines. Researchers from Duke University in Durham, North Carolina, have observed the behavior of whales as they come into areas where sonar is being used and found these marine mammals may even avoid venturing into new feeding areas when they hear sonar. The results of this research suggest militaries should refrain from...

UK Team Uses Echolocation To Produce Highly Detailed Bat Maps
2013-07-03 12:42:13

Brett Smith for redOrbit.com - Your Universe Online Using over 15,000 recordings of echolocation sounds gathered from across the UK countryside, researchers from the University of Leeds have rendered the most detailed, large-scale maps of bat distribution in northern England. According to the researchers, the bat maps are especially significant because the animals represent about 25 percent of all of the UK's native mammal species and can be a canary-in-the-coal-mine, ecologically...

Echoes And Algorithm 3D Map Of Room
2013-06-19 08:35:25

redOrbit Staff & Wire Reports - Your Universe Online Researchers have developed a new algorithm that makes it possible to map the shape and dimensions of a room using just a few microphones and a snap of the fingers. Developed at the École polytechnique fédérale de Lausanne (EPFL) in Switzerland, the algorithm models a room using echoes produced from sound, similar to the way in which bats and dolphins emit sounds in order to navigate. This...

High-Pitched Echolocation Helps Harbor Porpoises Avoid Killer Whales
2013-06-12 14:17:20

Lee Rannals for redOrbit.com — Your Universe Online Researchers from the University of Southern Denmark (SDU) have determined why harbour porpoises are doing so well in coastal and busy waters. The team wrote in the journal Frontiers in Physiology that these animals are able to thrive through the Northern Hemisphere due to their sophisticated echolocation abilities. Coastal waters like the ones harbor porpoises live in can be challenging for whales due to the risk of beaching and...

Amelia Earhart's Electra Possibly Found Via Sonar Data
2013-06-02 05:03:47

redOrbit Staff & Wire Reports - Your Universe Online A sonar image collected off the cost of Nikumaroro Island in the Pacific Ocean contains an object that could be the wing from Amelia Earhart´s long-lost Lockheed Electra, various media outlets reported over the weekend. Earhart, the first woman to fly solo across the Atlantic Ocean, disappeared during a flight over the Pacific in July of 1937, and Nina Golgowski of the New York Daily News reports that evidence suggests she...

Blind People Can Learn To Use Their Inner Bat
2013-05-21 05:51:25

April Flowers for redOrbit.com - Your Universe Online Researchers have known for a long time that blind and visually impaired people rely on other senses. A new study led by the University of Southampton, however, now shows that they have the potential to use echolocation, similar to that of bats and dolphins, to determine the location of an object. The researchers examined how hearing, particularly the hearing of echoes, could help blind people with spatial awareness and navigation....

Seismic Ocean Surveys For Gas And Oil Could Kill 140,000 Marine Mammals
2013-04-18 08:52:07

Lawrence LeBlond for redOrbit.com - Your Universe Online Blasting sound waves through the ocean to the seafloor in search of fossil fuels may do more harm than good, according to environmentalists. But the US Department of Interior has been considering giving large oil and gas companies permission to do just that. According to estimates, scores of  marine mammals would be injured and possibly killed along the east coast if these companies follow through with their dangerous sonar...


Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.