scholarly journals Changes in Bottom Water Physical Properties Above the Mid-Atlantic Ridge Flank in the Brazil Basin

2018 ◽  
Vol 123 (1) ◽  
pp. 708-719 ◽  
Author(s):  
Jian Zhao ◽  
Andreas M. Thurnherr
Keyword(s):  
Physical Properties ◽  
Bottom Water ◽  
Brazil Basin ◽  
Mid Atlantic Ridge ◽  
Ridge Flank

The features of Antarctic Bottom Water in the fracture zones at 7-10 deg. N of the Mid-Atlantic ridge

2020 ◽  
Author(s):  
Valentina Volkova ◽  
Alexander Demidov ◽  
Fedor Gippius
Keyword(s):  
Bottom Water ◽  
Historical Data ◽  
Water Mass ◽  
Main Task ◽  
Bottom Relief ◽  
Antarctic Bottom Water ◽  
Fracture Zones ◽  
Mid Atlantic Ridge ◽  
Proper Estimation ◽  
The Antarctic

<p>Despite the fact that there are numerous estimates of the Antarctic Bottom Water (AABW) formation and transport, its evolution and distribution pathways are still debatable (Morozov E.G. et al., 2010).</p><p>The main task of this work was to identify the structure and transport of deep and bottom water mass of the fracture zones (7 40', Vernadsky and Doldrums). The research is based on new data (multibeam bottom relief, temperature, salinity, velocity) obtained during the research cruise on the RV "Akademik Nikolaj Strakhov" in October-November 2019 and WODB18 historical data.</p><p>The main result of the research is proper estimation of the AABW and LNADW transport, which takes into consideration the influence of fracture zone morphometry. Accordingly, the preliminary circulation scheme of water masses is obtained.</p>

Bottom water flows in the tropical fractures of the Northern Mid-Atlantic Ridge

2017 ◽  
Vol 74 (2) ◽  
pp. 147-167 ◽  
Author(s):  
Eugene G. Morozov ◽  
Roman Yu. Tarakanov ◽  
Dmitry I. Frey ◽  
Tatiana A. Demidova ◽  
Nikolay I. Makarenko
Keyword(s):  
Bottom Water ◽  
Water Flows ◽  
Mid Atlantic Ridge

The flow of antarctic bottom water from the Vema channel to the Brazil Basin

2014 ◽  
Vol 456 (1) ◽  
pp. 598-601 ◽  
Author(s):  
E. G. Morozov ◽  
R. Yu. Tarakanov
Keyword(s):  
Bottom Water ◽  
Antarctic Bottom Water ◽  
Brazil Basin

scholarly journals Geothermal heating and episodic cold-seawater intrusions into an isolated ridge-flank basin near the Mid-Atlantic Ridge

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Keir Becker ◽  
Richard E. Thomson ◽  
Earl E. Davis ◽  
Heinrich Villinger ◽  
C. Geoffrey Wheat
Keyword(s):  
Bottom Water ◽  
Ocean Bottom ◽  
Geothermal Heat ◽  
Bottom Water Temperature ◽  
Geothermal Heating ◽  
Mid Ocean Ridge ◽  
Before And After ◽  
Bottom Waters ◽  
Mid Atlantic Ridge ◽  
Ocean Ridge

AbstractSix-year records of ocean bottom water temperatures at two locations in an isolated, sedimented deep-water (∼4500 m) basin on the western flank of the mid-Atlantic Ridge reveal long periods (months to >1 year) of slow temperature rises punctuated by more rapid (∼1 month) cooling events. The temperature rises are consistent with a combination of gradual heating by the geothermal flux through the basin and by diapycnal mixing, while the sharper cooling events indicate displacement of heated bottom waters by incursions of cold, dense bottom water over the deepest part of the sill bounding the basin. Profiles of bottom water temperature, salinity, and oxygen content collected just before and after a cooling event show a distinct change in the water mass suggestive of an incursion of diluted Antarctic Bottom Water from the west. Our results reveal details of a mechanism for the transfer of geothermal heat and bottom water renewal that may be common on mid-ocean ridge flanks.

scholarly journals Antarctic Bottom Water Warming in the Brazil Basin: 1990s Through 2020, From WOCE to Deep Argo

2020 ◽  
Vol 47 (18) ◽  
Author(s):  
Gregory C. Johnson ◽  
Chanelle Cadot ◽  
John M. Lyman ◽  
Kristene E. McTaggart ◽  
Elizabeth L. Steffen
Keyword(s):  
Bottom Water ◽  
Antarctic Bottom Water ◽  
Brazil Basin
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