Scientists announced the extension almost oxygen-free “dead zone” in the Indian ocean
A large part of the North-Western parts of the Indian ocean is a “dead zone” almost entirely devoid of oxygen, and hence life. We are talking about the body of water the size of the territory of Scotland, which is constantly expanding, causing concern to the scientific community. They see this as one of the manifestations of negative impact on the nature of global warming.
“Dead zone” in the Indian ocean occupies almost the entire Arabian sea from the Gulf of Oman in the West to the coast of India in the East and to Yemen in the South. It far exceeds in size the same areas of ecological disaster in other parts of the World ocean leads the Agency France-Raman researchers from new York University Abu Dhabi (UAE) Suheir Lashkara. “The dead zone” starts at about 100 m from the ocean surface down to a depth of 1.5 km, with almost all of the mass of water completely devoid of oxygen,” said Lashkar in an interview with AFP.
He and his associates in science believe that global warming is spurring the extension of this zone, which entails negative consequences for natural ecosystems and threatens to leave without a catch for fishermen, and without attractions of tour operators.
According to scientists, in the presence of “dead zones” there is nothing supernatural, but when they are so extensive, it is cause for concern. The researchers base their conclusions on data obtained by the sensors of the robots that descended to a depth not achievable for manned submersibles. Measurements conducted by the team of scientists from the British University of East Anglia University and Omani Sultan Qaboos, show a significant drop of oxygen content in water compared with data obtained in 1996. Besides, if earlier it concerned a small area in the center of the Arabian sea, now the phenomenon has spread almost on the entire area.
Lashkar believes that it is a vicious circle, when rising sea temperatures in the “dead zone” leads to a decrease in oxygen content in the water, and this, in turn, causes even more heating of water.
The negative trend could affect the operation of numerous ports on the coast of the Arabian sea, and on the lives of the people in these regions, which is associated with fishing. “When the oxygen content of the water falls below a certain level, the fish goes,” says lachkar.
In addition, it leads to the death of coral reefs, and reduced tourism attractiveness of the affected areas.
According to the materials: tass.ru