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| Romahn, S.; Mackensen, A.; Groeneveld, J.; Paetzold, J.. |
| 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... |
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| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00274/38489/36944.pdf |
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| Dorschel, B.; Jensen, L.; Arndt, J. E.; Brummer, G. -j.; De Haas, H.; Fielies, A.; Franke, D.; Jokat, W.; Krocker, R.; Kroon, D.; Paetzold, J.; Schneider, R. R.; Spiess, V.; Stollhofen, H.; Uenzelmann-neben, G.; Watkeys, M.; Wiles, E.. |
| We present a comprehensive regional bathymetric data compilation for the southwest Indian Ocean (swIOBC) covering the area from 4°S to 40°S and 20°E to 45°E with a spatial resolution of 250 m. For this, we used multibeam and singlebeam data as well as data from global bathymetric data compilations. We generated the swIOBC using an iterative approach of manual data cleaning and gridding, accounting for different data qualities and seamless integration of all different kinds of data. In comparison to existing bathymetric charts of this region, the new swIOBC benefits from nearly four times as many data-constrained grid cells and a higher resolution, and thus reveals formerly unseen seabed features. In the central Mozambique Basin a surprising variety of... |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00428/53985/55152.pdf |
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