Chemistry of streams of Signy Island, maritime Antarctic: sources of major ions

Caulkett, A.P.; Ellis-Evans, J.C.. 1997 Chemistry of streams of Signy Island, maritime Antarctic: sources of major ions. Antarctic Science, 9 (01). 3-11. 10.1017/S0954102097000023

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Abstract/Summary

A general study of the streams of Signy Island, South Orkney Islands, was undertaken to identify the effects of catchment, distance from source, and time on concentrations of dissolved ions. In the majority of cases catchment did not affect the chemistry of streams, although marine-derived ions were affected by distance from the sea. Na+, K+, Mg2+, Ca2+, Cl− and NH4+were derived from the thawing of the winter snowpack. NO3− was derived from areas of permanent ice. SiO44−, Ca2+, Mg2+ and CO2−3 were derived from crustal weathering. Although PO43− was also derived from crustal weathering, it was released as a pulse related to the thawing of the soil.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1017/S0954102097000023
Programmes:	BAS Programmes > Pre 2000 programme
ISSN:	0954-1020
Additional Keywords:	geochemistry, martime Antarctic, streams
NORA Subject Terms:	Chemistry
Date made live:	14 Oct 2014 13:30 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/508603

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