Shallow remineralization in the Weddell Gyre
نویسندگان
چکیده
منابع مشابه
The thermodynamic balance of the Weddell Gyre
The thermodynamic balance of the Weddell Gyre is assessed from an inverse estimate of the circulation across the gyre’s rim. The gyre experiences a weak net buoyancy gain that arises from a leading-order cancelation between two opposing contributions, linked to two cells of water mass transformation and diapycnal overturning. The lower cell involves a cooling-driven densification of 8.4± 2.0 Sv...
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Full-depth measurements of δ(18)O from 2008 to 2010 enclosing the Weddell Gyre in the Southern Ocean are used to investigate the regional freshwater budget. Using complementary salinity, nutrients and oxygen data, a four-component mass balance was applied to quantify the relative contributions of meteoric water (precipitation/glacial input), sea-ice melt and saline (oceanic) sources. Combinatio...
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New estimates are obtained of oxygen utilization rates on isopycnal surfaces in the North Atlantic subtropical gyre thermocline based on tritium inventories (2.4-3.5 mol m -2 yr -1) and 228Ra measurements (8.5 _+ 0.8 mol m -2 yr-l). Arguments are given for why the tritium inventory oxygen utilization rate estimate may be too low. The 228Ra results are combined with recent estimates of oxygen ut...
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ژورنال
عنوان ژورنال: Geochemistry, Geophysics, Geosystems
سال: 2002
ISSN: 1525-2027
DOI: 10.1029/2001gc000182