open access

https://hdl.handle.net/2115/70578

Bromoform concentrations in slush-layer water in Antarctic fast ice

英語

Lützow-Holm Bay

2011-11-22

Cambridge University Press

Antarctic Science

23(6)

623-628

Bromoform concentrations in water of the slush layer that developed at the interface between snow and sea ice were measured during the seasonal warming in Lützow-Holm Bay, East Antarctica. Mean bromoform concentration was 5.5 ± 2.4 pmol l-1, which was lower than that of the under-ice water (10.9 ± 3.5 pmol l-1). Temporal decrease in bromoform concentrations and salinity with increasing temperature of the slush water suggest that the bromoform concentrations were reduced through dilution with meltwater input from the upper surface of sea ice. In contrast, bromoform concentrations in the under-ice water increased during this period while the salinity of the under-ice water decreased. It is speculated that the sea ice meltwater input contained high bromoform concentrations from the brine channels within the sea ice and from the bottom of the ice that were contributed to the increased bromoform concentrations in the under-ice water.

学術雑誌論文

Accepted Manuscript

This article has been published in a revised form in Antarctic Science https://doi.org/10.1017/S0954102011000459. This version is free to view and download for private research and study only. Not for re-distribution, re-sale or use in derivative works. © 2011 Antarctic Science Ltd

0954-1020

1365-2079