Mathematics – Logic
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3703603b&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 3, CiteID L03603
Mathematics
Logic
1
Global Change: Biogeochemical Cycles, Processes, And Modeling (0412, 0414, 0793, 4805, 4912), Oceanography: Biological And Chemical: Biogeochemical Cycles, Processes, And Modeling (0412, 0414, 0793, 1615, 4912), Oceanography: Biological And Chemical: Carbon Cycling (0428), Biogeosciences: Biogeochemical Cycles, Processes, And Modeling (0412, 0793, 1615, 4805, 4912), Geochemistry: Marine Geochemistry (4835, 4845, 4850)
Scientific paper
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.
Boudreau Bernard P.
Meysman Filip J. R.
Middelburg Jack J.
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