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

Basak, Chandranath; Fröllje, Henning; Lamy, Frank; Gersonde, Rainer; Benz, Verena; Anderson, Robert F; Molina-Kescher, Mario; Pahnke, Katharina (2016): Neodymium isotope data from South Pacific sediment cores. PANGAEA, https://doi.org/10.1594/PANGAEA.858969, Supplement to: Basak, C et al. (2018): Breakup of last glacial deep stratification in the South Pacific. Science, 359(6378), 900-904, https://doi.org/10.1126/science.aao2473

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

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Stratification of the deep Southern Ocean during the Last Glacial Maximum is thought to have facilitated carbon storage and subsequent release during the deglaciation as stratification broke down, contributing to atmospheric CO2 rise. Here, we present neodymium isotope evidence from deep to abyssal waters in the South Pacific that confirms stratification of the deepwater column during the Last Glacial Maximum. The results indicate a glacial northward expansion of Ross Sea Bottom Water and a Southern Hemisphere climate trigger for the deglacial breakup of deep stratification. It highlights the important role of abyssal waters in sustaining a deep glacial carbon reservoir and Southern Hemisphere climate change as a prerequisite for the destabilization of the water column and hence the deglacial release of sequestered CO2 through upwelling.
Coverage:
Median Latitude: -55.761282 * Median Longitude: -124.410172 * South-bound Latitude: -57.204330 * West-bound Longitude: -151.610830 * North-bound Latitude: -54.215000 * East-bound Longitude: -114.788500
Date/Time Start: 1964-01-01T00:00:00 * Date/Time End: 2009-12-30T08:24:00
Size:
5 datasets

Download Data

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