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Latest Sonar Stories

Image 1 - WHOI Studies Hydrocarbon Flow Rate Of Deepwater Horizon Spill
2011-09-06 05:23:09

  Researchers at the Woods Hole Oceanographic Institution (WHOI) have calculated the flow rate of the BP Macondo well to be about 57,000 barrels of oil per day, totaling close to 5 million barrels of oil and nearly 100 million standard cubic feet per day of natural gas released from April 2010 to July 2010. The study results were published in the online issue of the Proceedings Of The National Academy Of Sciences (PNAS). The estimates matched those made by the federal government...

2011-08-15 08:00:00

TEWKSBURY, Mass., Aug. 15, 2011 /PRNewswire/ -- The U.S. Navy announced the successful launch and recovery of the Remote Multi-Mission Vehicle (RMMV) carrying the Raytheon-developed AN/AQS-20A minehunting sonar. The launch and recovery was the first demonstration of the unmanned, remotely-operated RMMV deployed from the USS Independence (LCS 2) while underway. AN/AQS-20A is a critical element of the U.S. Navy's mine countermeasure capability and the only minehunting sonar sensor developed,...

2011-08-05 07:30:00

GIVAT SHMUEL, Israel, Aug. 5, 2011 /PRNewswire/ -- DSIT Solutions Ltd., a subsidiary of Acorn Energy Inc. (NASDAQ: ACFN), announced that its Projects Division was awarded a new manufacturing and simulator development contract valued at approximately $1.75 million. The customer is a leading integrator with whom DSIT enjoys a long and mutually beneficial business relationship. Work on the project has already begun and is expected to be completed in the middle of 2012. The customer has...

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2011-07-31 07:15:59

In a paper published recently in the journal Science, researchers at Brown University and from the Republic of Georgia have learned how bats can home in on a target, virtually dismissing other objects in their midst. The trick lies in their neurons: Bats can separate a cavalcade of echoes returning from their sonar blasts by distinguishing changes in amplitude "” the intensity of the sound "” between different parts of each echo within 1.5 decibels, to decide whether the object is...

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2011-07-29 14:11:15

Scientists have found a rainforest vine that has evolved dish-shaped leaves to attract the bats that pollinate it. Tests found that the leaves were supremely efficient at bouncing back the sound pulses the flying mammals used to navigate. The bats were found to be able to locate the plant when the leaves were present twice as quickly as when they were removed. This study is the first to find a plant with "specialized acoustic features" to help bat pollinators find them using sound. Bats...

2011-07-28 23:19:02

The researchers discovered that a rainforest vine, pollinated by bats, has evolved dish-shaped leaves with such conspicuous echoes that nectar-feeding bats can find its flowers twice as fast by echolocation. The study is published today in Science. While it is well known that the bright colours of flowers serve to attract visually-guided pollinators such as bees and birds, little research has been done to see whether plants which rely on echolocating bats for pollination and seed dispersal...

2011-07-14 09:00:00

OTTAWA, Ontario, July 14, 2011 /PRNewswire/ -- General Dynamics Canada has completed its largest and most successful Technology Demonstration Program (TDP) with Defence Research and Development Canada Atlantic (DRDC Atlantic), demonstrating a torpedo-defence enhancement that will increase the level of protection for Canadian Navy ships. The Multisensor Torpedo Detection Classification and Localization (MSTDCL) Technology Demonstration Program was initiated in 2006 by DRDC Atlantic to...

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2011-06-08 07:24:23

Dolphins and porpoises use echolocation for hunting and orientation. By sending out high-frequency sound, known as ultrasound, dolphins can use the echoes to determine what type of object the sound beam has hit. Researchers from Sweden and the US have now discovered that dolphins can generate two sound beam projections simultaneously. "The beam projections have different frequencies and can be sent in different directions. The advantage is probably that the dolphin can locate the object more...

2011-05-30 07:22:25

(Ivanhoe Newswire) -- Everybody has heard about echolocation in bats and dolphins. These creatures emit bursts of sounds and listen to the echoes that bounce back to detect objects in their environment. What is less well known is that people can echolocate, too. In fact, there are blind people who have learned to make clicks with their mouths and to use the returning echoes from those clicks to sense their surroundings. Some of these people are so adept at echolocation that they can use this...


Word of the Day
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
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