The rapid development of phytoplankton caused by changes in the structure of ice due to global warming. Zazelenevshie ocean areas off the coast of Alaska and Chukotka are visible even in satellite images.
Scientists have found that the water off the coast of Alaska began to "bloom" under the ice due to the rapid growth of phytoplankton. The study is published in the journal Science. $ CUT $
In the summer of 2011, scientists made an expedition to the Chukchi Sea to the icebreaker USCGC Healy, examining the state of young ice (thickness up to 1.3 m). They moved into the territory covered by ice for 250 miles, while taking samples of water ice.
According to the study, the area phytoplankton bloom under the ice stretches for 100 kilometers, and the amount of microscopic algae in the sea areas covered by ice, four times more than in the neighboring areas of free water.
The bulk of the phytoplankton is concentrated in the so-called zone of upwelling, where water from the shallow continental shelf mixed with the flow going from the depths of the ocean. The explosive growth of algae is provided by minerals that brings colder water from the lower ocean layers.