Transport of Antarctic bottom water through the Kane Gap, tropical NE Atlantic Ocean
We study low-frequency properties of the Antarctic Bottom Water (AABW) flow through the Kane Gap (9° N) in the Atlantic Ocean. The measurements in the Kane Gap include five visits with CTD (Conductivity-Temperature-Depth) sections in 2009–2012 and a year-long record of currents on a mooring using th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2013-09-01
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| Series: | Ocean Science |
| Online Access: | http://www.ocean-sci.net/9/825/2013/os-9-825-2013.pdf |
| _version_ | 1811196536529354752 |
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| author | E. G. Morozov R. Y. Tarakanov H. van Haren |
| author_facet | E. G. Morozov R. Y. Tarakanov H. van Haren |
| author_sort | E. G. Morozov |
| collection | DOAJ |
| description | We study low-frequency properties of the Antarctic Bottom Water (AABW) flow through the Kane Gap (9° N) in the Atlantic Ocean. The measurements in the Kane Gap include five visits with CTD (Conductivity-Temperature-Depth) sections in 2009–2012 and a year-long record of currents on a mooring using three AquaDopp current meters. We found an alternating regime of flow, which changes direction several times during a year. The seasonal signal seems to dominate. The maximum daily average values of southerly velocities reach 0.20 m s<sup>−1</sup>, while the greatest north-northwesterly velocity is as high as 0.15 m s<sup>−1</sup>. The velocity and transport at the bottom are aligned along the slope of a local hill near the southwestern side of the gap. The distribution of velocity directions at the upper boundary of AABW is wider. The transport of AABW (Θ < 1.9 °C) based on the mooring and LADCP (Lowered Acoustic Doppler Current Profiler) data varies approximately within ±0.35 Sv in the northern and southern directions. The annual mean AABW transport through the Kane Gap is almost zero. |
| first_indexed | 2024-04-12T01:00:35Z |
| format | Article |
| id | doaj.art-e37b26874b8548229c45c2b83ec6b268 |
| institution | Directory Open Access Journal |
| issn | 1812-0784 1812-0792 |
| language | English |
| last_indexed | 2024-04-12T01:00:35Z |
| publishDate | 2013-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Ocean Science |
| spelling | doaj.art-e37b26874b8548229c45c2b83ec6b2682022-12-22T03:54:29ZengCopernicus PublicationsOcean Science1812-07841812-07922013-09-019582583510.5194/os-9-825-2013Transport of Antarctic bottom water through the Kane Gap, tropical NE Atlantic OceanE. G. MorozovR. Y. TarakanovH. van HarenWe study low-frequency properties of the Antarctic Bottom Water (AABW) flow through the Kane Gap (9° N) in the Atlantic Ocean. The measurements in the Kane Gap include five visits with CTD (Conductivity-Temperature-Depth) sections in 2009–2012 and a year-long record of currents on a mooring using three AquaDopp current meters. We found an alternating regime of flow, which changes direction several times during a year. The seasonal signal seems to dominate. The maximum daily average values of southerly velocities reach 0.20 m s<sup>−1</sup>, while the greatest north-northwesterly velocity is as high as 0.15 m s<sup>−1</sup>. The velocity and transport at the bottom are aligned along the slope of a local hill near the southwestern side of the gap. The distribution of velocity directions at the upper boundary of AABW is wider. The transport of AABW (Θ < 1.9 °C) based on the mooring and LADCP (Lowered Acoustic Doppler Current Profiler) data varies approximately within ±0.35 Sv in the northern and southern directions. The annual mean AABW transport through the Kane Gap is almost zero.http://www.ocean-sci.net/9/825/2013/os-9-825-2013.pdf |
| spellingShingle | E. G. Morozov R. Y. Tarakanov H. van Haren Transport of Antarctic bottom water through the Kane Gap, tropical NE Atlantic Ocean Ocean Science |
| title | Transport of Antarctic bottom water through the Kane Gap, tropical NE Atlantic Ocean |
| title_full | Transport of Antarctic bottom water through the Kane Gap, tropical NE Atlantic Ocean |
| title_fullStr | Transport of Antarctic bottom water through the Kane Gap, tropical NE Atlantic Ocean |
| title_full_unstemmed | Transport of Antarctic bottom water through the Kane Gap, tropical NE Atlantic Ocean |
| title_short | Transport of Antarctic bottom water through the Kane Gap, tropical NE Atlantic Ocean |
| title_sort | transport of antarctic bottom water through the kane gap tropical ne atlantic ocean |
| url | http://www.ocean-sci.net/9/825/2013/os-9-825-2013.pdf |
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