Contemporary rates of chemical denudation and atmospheric CO2 sequestration in glacier basins : an Arctic perspective

Auteurs :
HODSON, A.
TRANTER, M.
VATNE, G.

Description :
This paper presents new estimates of solute fluxes from 5 high Arctic glacier basins in Svalbard. These estimates are combined with data from 2 other glacier basins to assess the effectiveness of chemical denudation on Svalbard and to estimate rates of temporary (or transient) CO2 drawdown. They use a solute provenance model to partition solutes into marine, aerosol, atmospheric and crustal components and to estimate their annual fluxes. The analysis shows that a large area of uncertainty in the transient CO2 drawdown estimates exists due to the non-stoichiometric release of solute during silicate hydrolysis.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2000, vol. 25, n°. 13, p. 1447-1471, Collation : Illustration, Références bibliographiques : 64 ref.

Date :
2000

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley