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| Pelejero, C.; Calvo, E.; Barrows, T. T.; Logan, G. A.; De Deckker, P.. |
| Alkenone palaeothermometry has demonstrated a wide spatial and temporal applicability for the reconstruction of sea-surface temperatures (SST). Some oceanic realms, however, remain poorly studied. We document U-37(K) index data for two sediment cores retrieved from the South Tasman Sea, one west of New Zealand (SO136-GC3) and the other southeast of Tasmania (FR1/94-GC3), extending back 280 kyr BP for the former and 460 kyr BP for the latter. High climatic sensitivity on orbital time scales is observed at both locations, particularly west of New Zealand, where typical glacial/interglacial SST amplitudes always span more than 7 degrees C. Southeast of Tasmania, SST amplitudes are lower in amplitude (4.3 to 6.9 degrees C) with the exception of Termination IV,... |
| Tipo: Text |
Palavras-chave: SST; South Pacific Ocean; Molecular biomarker; Late Pleistocene; U-37(K); Marine Isotopic Stage 11. |
| Ano: 2006 |
URL: https://archimer.ifremer.fr/doc/00234/34530/33425.pdf |
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| Cortese, G.; Dunbar, G. B.; Carter, L.; Scott, G.; Bostock, H.; Bowen, M.; Crundwell, M.; Hayward, B. W.; Howard, W.; Martinez, J.l.; Moy, A.; Neil, H.; Sabaa, A.; Sturm, A.. |
| Paleoceanographic archives derived from 17 marine sediment cores reconstruct the response of the Southwest Pacific Ocean to the peak interglacial, Marine Isotope Stage (MIS) 5e (ca. 125ka). Paleo-Sea Surface Temperature (SST) estimates were obtained from the Random Forest modelan ensemble decision tree toolapplied to core-top planktonic foraminiferal faunas calibrated to modern SSTs. The reconstructed geographic pattern of the SST anomaly (maximum SST between 120 and 132ka minus mean modern SST) seems to indicate how MIS 5e conditions were generally warmer in the Southwest Pacific, especially in the western Tasman Sea where a strengthened East Australian Current (EAC) likely extended subtropical influence to ca. 45 degrees S off Tasmania. In contrast, the... |
| Tipo: Text |
Palavras-chave: Interglacial climate; Foraminifera; South Pacific Ocean; Marine Isotope Stage 5; Sea surface temperature. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00264/37492/36995.pdf |
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