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

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...

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Bibliographic Details
Published in:Antarctic Science
Main Authors: Caulkett, A.P., Ellis-Evans, J.C.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1997
Subjects:
Geology
Ecology, Evolution, Behavior and Systematics
Oceanography
Antarctic
South Orkney Islands
Signy Island
Antarc*
Antarctic Science
Online Access:http://dx.doi.org/10.1017/s0954102097000023
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102097000023
Description
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 + , Mg 2+ , Ca 2+ , Cl − and NH 4 + were derived from the thawing of the winter snowpack. NO 3 − was derived from areas of permanent ice. SiO 4 4− , Ca 2+ , Mg 2+ and CO 2− 3 were derived from crustal weathering. Although PO 4 3− was also derived from crustal weathering, it was released as a pulse related to the thawing of the soil.

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