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Title
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Carbonate compensation dynamics
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Author
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Abstract
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| Carbonate saturation (zsat) and compensation (zcc) depths change with deep-ocean acidification and basification. We present simple, explicit, mechanistic formulas for the positions of these two critical depths. In particular zcc is expressed as a function of the mean dissolved carbonate ion concentration of the deep ocean, [CO3]D, the supply of dissolvable CaCO3, Fc, and the dissolution rate constant at the sediment-water interface, kc, which we show to be essentially mass-transfer controlled. Calculations reveal that zsat and zcc are today some ∼0.9 km apart and will rise and separate by as much as 1.7 km with acidification; conversely, if [CO3]D increases, zsat and zcc will deepen, but their separation will asymptote to ∼0.7 km. |
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Language
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English
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Source (journal)
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Geophysical research letters. - Washington, D.C.
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Publication
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Washington, D.C.
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2010
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ISSN
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0094-8276
[print]
1944-8007
[online]
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DOI
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10.1029/2009GL041847
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Volume/pages
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37
:3
(2010)
, 5 p.
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Article Reference
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03603
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ISI
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000274355700006
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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