Mysteries of the Kara Sea. Scientists found a “conserved” layer of water
16:05 6 сентября 2019
Категории: News in English
On the ship “Professor Multanovsky” within the fourth stage of the expedition “Transarctic 2019” the scientists completed work in one of the most severe northern seas — the Kara Sea. During the measurements on 49 stations they made interesting observations.
The third oceanographic section passed along the 72nd parallel from the Yamal Peninsula to the Novaya Zemlya archipelago, as Roshydromet reports. This water area is in constant interaction with the Barents Sea through the Straits of the Yugorsky Shar and the Kara Gates, therefore, according to the results of the measurements, the scientists were able to find traces of waters flowing here from the Barents Sea. These waters are located at the depths from 0 to 100 meters and differ in that they have the positive temperature, unlike the surrounding deep waters of the Kara Sea.
Also interesting facts were marked after passing of the Novaya Zemlya archipelago. After analyzing the next samples in the laboratory of the ship the scientists noticed difficult water exchange in the area of the Novaya Zemlya trench in the bottom layer at the depths from 200 to 300 meters. Biogenic elements of the mineral form of phosphorus and nitrogen accumulate there, and the content of oxygen decreases. At the southern tip of Novaya Zemlya the scientists found the lowest content of oxygen — 5.5 ml per liter, weakly alkaline water. Most likely, the reason is in thermocline — a layer of sharp temperature drop, which prevents from water exchange and creates the effect of conservation of the 100-meter bottom layer in this area of the Kara Sea.