Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46686 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Physical and chemical properties of seawater over the slopes of the northern part of the Mid-Atlantic Ridge Physical and chemical properties of seawater over the slopes of the northern part of the Mid-Atlantic Ridge Morozov E G Morozov E G Kolokolova A V Kolokolova A V Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia ru Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia ru Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia ru Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia ru 15 2 1 7 29 10 2021 https://rjes.ru/en/nauka/article/46686/view

We analyze physical and chemical properties of seawater east and west of the Mid-Atlantic Ridge in the tropical North Atlantic based on the historical data and our measurements in 2014. Concentration of nutrients in the bottom layer east of the ridge is smaller than west of the ridge because Antarctic Bottom Water propagated to the East Atlantic through abyssal fractures in the ridge and mixes with the overlying waters in the course of its propagations. We found a local temperature increase near the bottom in the rift zone of the Mid-Atlantic Ridge along 16° 39'~N, which can be related to hydrothermal activity in the region.

We analyze physical and chemical properties of seawater east and west of the Mid-Atlantic Ridge in the tropical North Atlantic based on the historical data and our measurements in 2014. Concentration of nutrients in the bottom layer east of the ridge is smaller than west of the ridge because Antarctic Bottom Water propagated to the East Atlantic through abyssal fractures in the ridge and mixes with the overlying waters in the course of its propagations. We found a local temperature increase near the bottom in the rift zone of the Mid-Atlantic Ridge along 16° 39'~N, which can be related to hydrothermal activity in the region.

 Mid Atlantic Ridge abyssal fracture zones Antarctic Bottom Water seawater properties distribution of nutrients Mid Atlantic Ridge abyssal fracture zones Antarctic Bottom Water seawater properties distribution of nutrients

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