Sound of sea: Underwater noise pollution of ships bursts during coronavirus lockon and respects & # 39; claim & # 39; whaling and other life in the Navy
- The COVID-19 crisis has seen a decline in shipping traffic around the world
- Experts who record sound from the coast of Canada have seen noise levels drop
- Researchers are now running to study how these changes affect the life of the sea
- Earlier work found that whales change their appearance in response to noise from ships
- Here you can help people who are not affected by Covid-19
Levels of ships' underwater noise pollution have fallen under the coronavirus lockon, providing a rest for whaling and other marine life.
Researchers who study the changes on the coast of Canada have mentioned that the decrease in shipping is something similar to a & # 39; giant human experiment & # 39 ;.
Around the world, biologists want to record the effect that the environment of noise pollution has on life in the oceans.
Previous studies have shown that noise pollution underwater forces whales to change how they & # 39; re singing and also cause them to become stressed.
The COVID-19 crisis has seen a significant decrease in traffic from cars, air and ocean – with corresponding reductions in both air and noise pollution.
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Levels of underwater noise pollution of ships have fallen under the coronavirus lockon, providing a rest for whaling and other marine life
Oceanographer David Barclay of Dalhousie University in Canada and colleagues have analyzed underwater sound recordings that have been found in two places in the & # 39; a neighborhood of & # 39; Vancouver Harbor have been taken – finding a significant drop in low-frequency shipping noise.
& # 39; Generally, we know that noise at this frequency affects marine mammals, & # 39; told Professor Barclay to the Guardian.
On one side, he added, & # 39; there has been a constant drop in noise since January 1, causing a change of four or five decibels to & # 39; e period until April 1st. & # 39;
During this time, the port has seen a decline of about 20 percent in exports and imports, economic data have revealed.
In the second place, meanwhile – located in deeper water, at a depth of about 9,843 feet (3,000 meters), and about 37 miles (60 kilometers) of the closest shipping vessels, the surrounding weekly noise levels fell & # 39; s by about 1.5 decibels.
& # 39; This gives us an idea of & # 39; e scale to which this reduction in noise can be observed, & # 39; told Professor Barclay to & # 39; a guardian.
The last time the oceans fell calm was in the & # 39; cabbage of & # 39; terrorist attacks of 9/11, when a reduction in shipping experts allowed to determine that shipwreck was linked to chronic stress in baleen whale fish
& # 39; We stand for a moment of truth, & # 39; acoustic marine Michelle Fournet of Cornell University – who studies bulky whales outside Alaska – told the Guardian.
& # 39; We have a chance to listen – and that chance to listen will never reappear in our lives. & # 39;
The last time the oceans fell calm was in the & # 39; nose of & # 39; a 9/11 terrorist attacks, when a reduction in shipping experts allowed them to determine that shipwreck was associated with chronic stress in ballfish.
In today's Dr. Fournet added, & # 39; we have a generation of humpbacks that have never known a Pacific Ocean. & # 39;
If it wasn't for the COVID-19 crisis, the current time of year would be the beginning of the cruise season in southeast Alaska, with the liners calling Vancouver before heading to the north farther.
& # 39; What we know about Southeast Alaska whales is that when it gets noisy, they call less, and as boats pass by, they call less, & # 39; said Fournet.
& # 39; I expect what we might see is an opportunity for whales to have more conversation and more complex conversation. & # 39;
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