PHYSICAL AND CHEMICAL PROPERTIES OF SEAWATER OVER THE SLOPES OF THE NORTHERN PART OF THE MID-ATLANTIC RIDGE
Рубрики: ОРИГИНАЛЬНЫЕ СТАТЬИ
Авторы:
1.
Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia
2.
Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia
Тип:
Статья
Страницы:
с 1
по 7
Статус:
Опубликован
Получено:
25.04.2015
Одобрено:
25.04.2015
Опубликовано:
25.04.2015
Язык материала:
английский
Ключевые слова:
Mid Atlantic Ridge, abyssal fracture zones, Antarctic Bottom Water, seawater properties, distribution of nutrients
Аннотация (русский):
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.
Ключевые слова:
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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2. Sandoval, F. J., Weatherly, G. L. Evolution of the deep western boundary current of Antarctic bottom water in the Brazil Basin, // J. Phys. Oceanogr., 2001. - v. 31 - p. 1440.
3. Wüst, G. Schichtung und Zirkulation des Atlantischen Ozeans // A. Defant (Ed.), Wissenschaftliche Ergebnisse, Deutsche Atlantische Expedition auf dem Forschungs - und Vermessungsschiff ``Meteor'' 1925-1927, 6(1) - Berlin: Walter de Gruyter [ampersand] Co., 1936. - p. 1440.
