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| Titel |
Deglacial intermediate water reorganization: new evidence from the Indian Ocean |
| VerfasserIn |
S. Romahn, A. Mackensen, J. Groeneveld, J. Pätzold |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 10, no. 1 ; Nr. 10, no. 1 (2014-02-10), S.293-303 |
| Datensatznummer |
250116911
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| Publikation (Nr.) |
 copernicus.org/cp-10-293-2014.pdf |
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| Zusammenfassung |
| The importance of intermediate water masses in climate change and ocean
circulation has been emphasized recently. In particular, Southern Ocean
Intermediate Waters (SOIW), such as Antarctic Intermediate Water and
Subantarctic Mode Water, are thought to have acted as active
interhemispheric transmitter of climate anomalies. Here we reconstruct
changes in SOIW signature and spatial and temporal evolution based on a
40 kyr time series of oxygen and carbon isotopes as well as planktic Mg/Ca
based thermometry from Site GeoB12615-4 in the western Indian Ocean. Our
data suggest that SOIW transmitted Antarctic temperature trends to the
equatorial Indian Ocean via the "oceanic tunnel" mechanism. Moreover, our
results reveal that deglacial SOIW carried a signature of aged Southern
Ocean deep water. We find no evidence of increased formation of intermediate
waters during the deglaciation. |
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