Abstract
We present a one-dimensional reactive transport
model to estimate benthic fluxes of dissolved inorganic carbon
(DIC) and alkalinity (AT) from coastal marine sediments.
The model incorporates the transport processes of
sediment accumulation, molecular diffusion, bioturbation
and bioirrigation, while the reactions included are the redox
pathways of organic carbon oxidation, re-oxidation of
reduced nitrogen, iron and sulfur compounds,
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