Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Fischer, Michael; Thomas, David N; Krell, Andreas; Nehrke, Gernot; Göttlicher, Jörg; Norman, Marc D; Meiners, Klaus M; Riaux-Gobin, C; Dieckmann, Gerhard S (2013): Physico-chemical characteristics and ikaite content of brine and ice samples taken during SIPEX and DDU campaigns in East Antarctica, 2007. PANGAEA, https://doi.org/10.1594/PANGAEA.847684, Supplement to: Fischer, M et al. (2012): Quantification of ikaite in Antarctic sea ice. Antarctic Science, 25(03), 421-432, https://doi.org/10.1017/S0954102012001150

Always quote above citation when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Calcium carbonate precipitation in sea ice is thought to potentially drive significant CO2 uptake by the ocean. However, little is known about the quantitative spatial and temporal distribution of CaCO3 within sea ice, although it is hypothesized that high quantities of dissolved organic matter and/or phosphate (common in sea ice) may inhibit its formation. In this quantitative study of hydrous calcium carbonate as ikaite, sea ice cores and brine samples were collected from pack and land fast sea ice between September and December 2007 during two expeditions, one in the East Antarctic sector and the other off Terre Adélie. Samples were analysed for CaCO3, salinity, dissolved organic carbon/nitrogen, inorganic phosphate, and total alkalinity. No relationship between these parameters and CaCO3 precipitation was evident. Ikaite was found mostly in the uppermost layers of sea ice with maximum concentrations of up to 126 mg ikaite per litre melted sea ice being measured, although both the temporal and horizontal spatial distributions of ikaite were highly heterogeneous. The precipitate was also found in the snow on top of the sea ice at some of the sampling locations.
Coverage:
Median Latitude: -65.475553 * Median Longitude: 129.535979 * South-bound Latitude: -66.657780 * West-bound Longitude: 116.800000 * North-bound Latitude: -64.250000 * East-bound Longitude: 139.998330
Date/Time Start: 2007-09-11T00:00:00 * Date/Time End: 2007-12-05T00:00:00
Size:
3 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text (use the following character encoding: )