Water temperature reconstruction for Terminations I and II of sediment core MD01-2378
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2008
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| author | Xu, Jian Holbourn, Ann E Kuhnt, Wolfgang Jian, Zhimin Kawamura, Hiroshi |
| author_facet | Xu, Jian Holbourn, Ann E Kuhnt, Wolfgang Jian, Zhimin Kawamura, Hiroshi |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We present centennial records of sea surface and upper thermocline temperatures in Core MD01-2378 from the Timor Sea, which provide new insights into the variability of the Indonesian outflow across the last two glacial terminations. Mg/Ca in Globigerinoides ruber (white s. s.) indicates an overall increase of 3.2 °C in sea surface temperature (SST) over Termination I. Following an early Holocene plateau at 11.3-6.4 ka, SSTs cooled by 0.6 °C during the middle to late Holocene (6.4-0.7 ka). The early Holocene warming occurred in phase with increasing northern hemisphere summer insolation, coinciding with northward displacement of the Intertropical Convergence Zone, enhanced boreal summer monsoon and expansion of the Indo-Pacific Warm Pool. Thermocline temperatures (Pulleniatina obliquiloculata Mg/Ca) gradually decreased from 24.5 to 21.5 °C since 10.3 ka, reflecting intensification of a cool thermocline throughflow. The vertical structure of the upper ocean in the Timor Sea evolved in similar fashion during the Holocene and MIS5e, although the duration of SST plateaux differed (11.3 to 6.4 ka in Termination I and from 129 to 119 ka in Termination II), which was probably due to the more intense northern hemisphere summer insolation during MIS 5e. During both terminations, SST increased simultaneously in the southern high latitudes and the tropical eastern Indian Ocean, suggesting virtually instantaneous atmospheric climate feedbacks between the high and low latitudes. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_831198 |
| institution | PANGAEA |
| language | en |
| publishDate | 2008 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Water temperature reconstruction for Terminations I and II of sediment core MD01-2378 Xu, Jian Holbourn, Ann E Kuhnt, Wolfgang Jian, Zhimin Kawamura, Hiroshi Giant piston corer; GPC; IMAGES VII - WEPAMA; Marion Dufresne (1995); MD012378; MD01-2378; MD122; Timor Sea We present centennial records of sea surface and upper thermocline temperatures in Core MD01-2378 from the Timor Sea, which provide new insights into the variability of the Indonesian outflow across the last two glacial terminations. Mg/Ca in Globigerinoides ruber (white s. s.) indicates an overall increase of 3.2 °C in sea surface temperature (SST) over Termination I. Following an early Holocene plateau at 11.3-6.4 ka, SSTs cooled by 0.6 °C during the middle to late Holocene (6.4-0.7 ka). The early Holocene warming occurred in phase with increasing northern hemisphere summer insolation, coinciding with northward displacement of the Intertropical Convergence Zone, enhanced boreal summer monsoon and expansion of the Indo-Pacific Warm Pool. Thermocline temperatures (Pulleniatina obliquiloculata Mg/Ca) gradually decreased from 24.5 to 21.5 °C since 10.3 ka, reflecting intensification of a cool thermocline throughflow. The vertical structure of the upper ocean in the Timor Sea evolved in similar fashion during the Holocene and MIS5e, although the duration of SST plateaux differed (11.3 to 6.4 ka in Termination I and from 129 to 119 ka in Termination II), which was probably due to the more intense northern hemisphere summer insolation during MIS 5e. During both terminations, SST increased simultaneously in the southern high latitudes and the tropical eastern Indian Ocean, suggesting virtually instantaneous atmospheric climate feedbacks between the high and low latitudes. |
| title | Water temperature reconstruction for Terminations I and II of sediment core MD01-2378 |
| topic | Giant piston corer; GPC; IMAGES VII - WEPAMA; Marion Dufresne (1995); MD012378; MD01-2378; MD122; Timor Sea |
| url | https://doi.org/10.1594/PANGAEA.831198 |