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Glacial/interglacial Changes in Subarctic North Pacific Stratification.
- Source :
-
Science . 5/13/2005, Vol. 308 Issue 5724, p1003-1006. 4p. 3 Graphs. - Publication Year :
- 2005
-
Abstract
- Since the first evidence of low algal productivity during ice ages in the Antarctic Zone of the Southern Ocean was discovered, there has been debate as to whether it was associated with increased polar ocean stratification or with sea-ice cover, shortening the productive season. The sediment concentration of biogenic barium at Ocean Drilling Program site 882 indicates low algal productivity during ice ages in the Subarctic North Pacific as well. Site 882 is located southeast of the summer sea-ice extent even during glacial maxima, ruling out sea-ice-driven light limitation and supporting stratification as the explanation, with implications for the glacial cycles of atmospheric carbon dioxide concentration. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GLACIAL climates
*BARIUM
*ATMOSPHERIC carbon dioxide
*ATMOSPHERIC chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 00368075
- Volume :
- 308
- Issue :
- 5724
- Database :
- Academic Search Index
- Journal :
- Science
- Publication Type :
- Academic Journal
- Accession number :
- 17120587
- Full Text :
- https://doi.org/10.1126/science.1108696