Introducing a noise net around airfields that emits sound levels equivalent to those of a conversation in a busy restaurant could prevent collisions between birds and aircraft, saving passenger lives and billions in damages, new research has found.
A study published in Ecological Applications led by Professor John Swaddle, visiting Research Associate at the University of Exeter, found that filling a controlled area with acoustic noise around an airfield, where the majority of collisions tend to take place, can reduce the number of birds in the area by 80 per cent.
Bird strikes cost the aviation industry worldwide billions of pounds annually, $937 million in the US alone, and were responsible for 255 deaths between 1988 and 2013, yet measures to reduce these have been largely ineffective. Collisions also pose a threat to resident and migratory birds as they often find the habitat around airports such as wetlands and open fields attractive.
Techniques to deter birds from airports include shooting, poisoning, live-capture and relocation, and the use of scare technologies, but these have proved largely ineffective. Professor Swaddle and his team believe they have found a benign and relatively cost effective solution to the problem by emitting 24- hour noise in the area to interrupt bird communication.
The researchers set up speakers and amplifiers in three areas of an airfield in Virginia USA and observed bird abundance over eight weeks, the first four weeks without noise and the second four weeks with the noise turned on.
Results showed a large decrease in the number of birds in the ‘sonic net’ and areas just outside and found that it was particularly effective at deterring a number of species that were at high risk of bird strike such as starlings.
“We have conducted prior research in an aviary but this is the first study done out in the field to show the efficacy of the sonic net. We are using a different kind of deterrent–trying to stop birds from hearing one another by playing a noise that is at the same pitch as the alarm calls or predator noises they are listening out for,” said Professor Swaddle, who is also Professor of Biology at the College of William and Mary in Williamsburg in the US.
“By playing a noise at the same pitch, we mask those sounds, making the area much riskier for the birds to occupy. The birds don’t like it and leave the area around the airfields, where there is potential for tremendous damage and loss of life.”
There was no sign of the birds becoming habituated to the noise which was set at a level louder than a domestic dishwasher but no more than that of a noisy restaurant.
“These findings have implications for airport safety but also have potential applications for agriculture and for alternative energy sources such as solar farms, where birds living and feeding in the area can cause disruption, and around wind turbines where the birds are at risk of collision and the threat to birds can sometimes be a legislative barrier,” Professor Swaddle added.
The Latest on: Sonic net
via Google News
The Latest on: Sonic net
- California Gold Rushon June 24, 2021 at 5:00 pm
Jim Brown, Tribal spokesperson and member of the tribal council of the Elemtribe of Pomo Indians. Brown can be reached via e-mail at [email protected]
- Close to Home: Protect kids from ‘the 100 deadliest days’
- Calistoga goats attract international attention with Irish TV
- Sonic.net starts trial of 1Gbps fiber-to-the-home internet in California, asks just $70on June 12, 2021 at 5:00 pm
You'll be forgiven for not being intimately familiar with Californian ISP Sonic.net, though we get the feeling you'll also wish it operated a little closer to your abode by the time you've ...
- U.S. Company Offering 1Gbs Internet for $70 a Monthon June 10, 2021 at 5:00 pm
That’s why it’s so refreshing to hear about Sonic.net, the ISP that is offering 1 Gbps fiber connections direct to the home for $70 a month. Incredibly, that price includes the installation of ...
- Meet the one ISP you might actually likeon June 4, 2021 at 5:00 pm
Multichannel News has a terrific interview with Dane Jasper, the CEO of California ISP Sonic.net, and he calls out many rival ISPs’ business practices as both bad for consumers and completely ...
- Ollas and other tricks to save water gardeningon June 4, 2021 at 9:40 am
Potter Green & Co.: 23586 Arnold Drive, Sonoma. Pottergreen.net, 707-996-8888 Petaluma Seed Bank: Smaller container ollas in stock; awaiting an order of larger ollas from DrippingSpringsOllas.com ...
- E-Bikes Offer Affordable Option To Reach Climate Goalson May 30, 2021 at 10:17 am
Jason Henderson teaches urban geography at San Francisco State University, [email protected] He is the author of “Street Fight: The Politics of Mobility in San Francisco.” In front of an ...
- What Canada can teach the U.S. about net neutralityon May 29, 2021 at 11:58 pm
A smattering of independent ISPs do exist, such as Wicked Broadband in Kansas or Sonic.net in California, but they are also left with access to older, slower networks that must be negotiated ...
- Many oppose Sebastopol Wi-Fi banon August 11, 2018 at 9:19 am
The City Council rescinded its agreement with Santa Rosa-based Sonic.net March 18 after Sandi Maurer and others expressed their health concerns. Maurer gathered 400 signatures against Wi-Fi and ...
via Bing News