Ocean becomes unusually quiet, and scientists are worried!
Why are whales in the ocean no longer singing!
On August 4, Russian media published an expert article.
In the deep sea, some troubling things are happening quietly.
American oceanographers used special microphones to listen to the melodies of Pacific whales for ten years.
Each year, the frequency and intensity of whales' singing are decreasing, and now they are almost silent.
Whales communicate through sound, just like land animals, because sound travels well in water.
Whales have special "songs" for "talking" to each other, navigation, and finally, courtship melodies.
Researchers are keen on recording these unique sounds and enjoy using them to amaze non-professional audiences.
Marine scientists proposed a simple and clear hypothesis in their research: whales stop singing because they feel uncomfortable.
This is like playing music while dying of thirst, said John Ryan from the Monterey Bay Aquarium Research Institute.
The ocean has become too hot.
But the problem is not just "warming".
Especially severe is so-called "marine heatwaves", which were already discovered in 2013.
Here, it refers to large areas of hot water that suddenly appear in the ocean, which heats up much more than the surrounding area.
The hot water has nowhere to go, almost stagnant, and can last for several years.
The first wave of hot water was discovered at the end of 2013 and disappeared only in 2016.
At the peak of the development of the hot water, the marine heatwave covered an area of one thousand kilometers by one thousand kilometers, with a depth of one hundred meters.
In the "heatwave", the temperature increased by 2-3 degrees, which is enough to disrupt the life of marine organisms.
The phenomenon of "heatwaves" likes the part of the Pacific near North America.
Although the root cause of the problem is not completely clear, it is certain that the combination of factors there: persistent warm high pressure in the atmosphere, ocean currents, and overall warming.
"Heatwaves" not only affect the weather, but also act as a feedback mechanism: weather triggers "heatwaves", and these "heatwaves" make the air even hotter.
Some people in the West have a hypothesis that "heatwaves" are partly due to the Chinese air becoming cleaner, as the Chinese government has taken environmental protection seriously.
As a result, the heatwaves have shifted from the Asian continent to the ocean.
Original: https://www.toutiao.com/article/1839525182322699/
Statement: This article represents the views of the author.