TEXL86-based oceanic temperatures in sediment core MD03-2601
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| Auteurs principaux: | , , , , , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2012
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| _version_ | 1867169052643819520 |
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| author | Kim, Jung-Hyun Crosta, Xavier Willmott, Verónica Renssen, Hans Bonnin, Jerome Helmke, Peer Schouten, Stefan Sinninghe Damsté, Jaap S |
| author_facet | Kim, Jung-Hyun Crosta, Xavier Willmott, Verónica Renssen, Hans Bonnin, Jerome Helmke, Peer Schouten, Stefan Sinninghe Damsté, Jaap S |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We reconstructed subsurface (~45-200 m water depth) temperature variability in the eastern Antarctic continental margin during the late Holocene, using an archaeal lipid-based temperature proxy (TEX86L). Our results reveal that subsurface temperature changes were probably positively coupled to the variability of warmer, nutrient-rich Modified Circumpolar Deep Water (MCDW, deep water of the Antarctic circumpolar current) intrusion onto the continental shelf. The TEX86L record, in combination with previously published climatic records, indicates that this coupling was probably related to the thermohaline circulation, seasonal variability in sea ice extent, sea temperature, and wind associated with high frequency climate dynamics at low-latitudes such as internal El Niño Southern Oscillation (ENSO). This in turn suggests a linkage between centennial ENSO-like variability at low-latitudes and intrusion variability of MCDW into the eastern Antarctic continental shelf, which might have further impact on ice sheet evolution. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_788511 |
| institution | PANGAEA |
| language | en |
| publishDate | 2012 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | TEXL86-based oceanic temperatures in sediment core MD03-2601 Kim, Jung-Hyun Crosta, Xavier Willmott, Verónica Renssen, Hans Bonnin, Jerome Helmke, Peer Schouten, Stefan Sinninghe Damsté, Jaap S AGE; Calculated from TEX86 (Kim et al., 2010); CALYPSO; Calypso Corer; DEPTH, sediment/rock; IMAGES X - CADO; Marion Dufresne (1995); MD032601; MD03-2601; MD130; Southern Ocean; Sub-surface temperature We reconstructed subsurface (~45-200 m water depth) temperature variability in the eastern Antarctic continental margin during the late Holocene, using an archaeal lipid-based temperature proxy (TEX86L). Our results reveal that subsurface temperature changes were probably positively coupled to the variability of warmer, nutrient-rich Modified Circumpolar Deep Water (MCDW, deep water of the Antarctic circumpolar current) intrusion onto the continental shelf. The TEX86L record, in combination with previously published climatic records, indicates that this coupling was probably related to the thermohaline circulation, seasonal variability in sea ice extent, sea temperature, and wind associated with high frequency climate dynamics at low-latitudes such as internal El Niño Southern Oscillation (ENSO). This in turn suggests a linkage between centennial ENSO-like variability at low-latitudes and intrusion variability of MCDW into the eastern Antarctic continental shelf, which might have further impact on ice sheet evolution. |
| title | TEXL86-based oceanic temperatures in sediment core MD03-2601 |
| topic | AGE; Calculated from TEX86 (Kim et al., 2010); CALYPSO; Calypso Corer; DEPTH, sediment/rock; IMAGES X - CADO; Marion Dufresne (1995); MD032601; MD03-2601; MD130; Southern Ocean; Sub-surface temperature |
| url | https://doi.org/10.1594/PANGAEA.788511 |