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Transport of Bottom Waters through the Vema Fracture Zone in the Mid-Atlantic Ridge

机译:通过大西洋中脊维玛断裂带的底水运输

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摘要

This paper is dedicated to the study of structure and transport of deep and bottom waters through the Vema Fracture Zone (11° N) in the Mid-Atlantic Ridge. In 2006, during an expedition onboard R/V Akademik Ioffe, a survey of 25 CTD-stations was carried out in the study region with a size of 15 × 15 km over the main saddle of the Vema Fracture Zone at 41° W. Strong spatial variability of water mass characteristics was found in the study region. A strong easterly flow was found in the main part of the channel with velocities up to 30 cm/s. This flow includes Antarctic Bottom Water (AABW) and lower part of the North Atlantic Deep Waters (NADW). It was found that the transport of AABW is within 0.11-0.64 Sv (1 Sv = 10~6 m~3/s). A decrease in the potential temperature of bottom waters by 0.027℃ was found compared to 1994.
机译:本文致力于研究大西洋中脊Vema断裂带(11°N)的深水和底水的结构和运移。 2006年,在R / V Akademik Ioffe船上进行的一次探险中,对研究区域内25个CTD台站进行了调查,大小为41°W,位于Vema断裂带主鞍上15×15 km。在研究区域发现了水团特征的空间变异性。在河道的主要部分发现了强烈的东风,流速高达30 cm / s。该水流包括南极底水(AABW)和北大西洋深水区(NADW)的下部。发现AABW的传输在0.11-0.64 Sv之内(1 Sv = 10〜6 m〜3 / s)。与1994年相比,发现底水的潜在温度降低了0.027℃。

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