Sediment cores MD19-3575CQ, MD19-3580, COR-1PC, PS2606-6 - subsurface, surface temperature (full resolution and resampled), and DeltaT records
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2024
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| author | Civel-Mazens, Matthieu Crosta, Xavier Cortese, Giuseppe Lowe, Vikki Ikehara, Minoru Itaki, Takuya Kohfeld, Karen E |
| author_facet | Civel-Mazens, Matthieu Crosta, Xavier Cortese, Giuseppe Lowe, Vikki Ikehara, Minoru Itaki, Takuya Kohfeld, Karen E |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We present five new records in four sediment cores of the Indian sector of the Southern Ocean. Radiolarian based subsurface temperatures (subST) were reconstructed using SORAD as a training dataset (Lawler et al., 2021; Civel-Mazens et al., 2023) with the Imbrie and Kipp Method applied to log transformed data. Diatom based sea surface temperatures (SST) were predicted using a dataset containing 249 samples as per Crosta et al. (2020) and applying the Modern Analog Technique to relative abundances of 33 diatom taxa. The SST records of cores DCR-1PC (Crosta et al., 2020) and MD19-3580 (this study) and the subST records of cores MD19-3575CQ and MD19-3580 (this study) were resampled at a 3kyrs interval to substract subST to SST at the two core sites (DCR-1PC/MD19-3575CQ and MD19-3580). This allowed to reconstruct the evolution of the delta of temperature (deltaT) between surface and subsurface. We here include the resampled and deltaT records. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_973478 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Sediment cores MD19-3575CQ, MD19-3580, COR-1PC, PS2606-6 - subsurface, surface temperature (full resolution and resampled), and DeltaT records Civel-Mazens, Matthieu Crosta, Xavier Cortese, Giuseppe Lowe, Vikki Ikehara, Minoru Itaki, Takuya Kohfeld, Karen E diatoms; Radiolarians; Southern Ocean; temperature reconstruction; transfer function We present five new records in four sediment cores of the Indian sector of the Southern Ocean. Radiolarian based subsurface temperatures (subST) were reconstructed using SORAD as a training dataset (Lawler et al., 2021; Civel-Mazens et al., 2023) with the Imbrie and Kipp Method applied to log transformed data. Diatom based sea surface temperatures (SST) were predicted using a dataset containing 249 samples as per Crosta et al. (2020) and applying the Modern Analog Technique to relative abundances of 33 diatom taxa. The SST records of cores DCR-1PC (Crosta et al., 2020) and MD19-3580 (this study) and the subST records of cores MD19-3575CQ and MD19-3580 (this study) were resampled at a 3kyrs interval to substract subST to SST at the two core sites (DCR-1PC/MD19-3575CQ and MD19-3580). This allowed to reconstruct the evolution of the delta of temperature (deltaT) between surface and subsurface. We here include the resampled and deltaT records. |
| title | Sediment cores MD19-3575CQ, MD19-3580, COR-1PC, PS2606-6 - subsurface, surface temperature (full resolution and resampled), and DeltaT records |
| topic | diatoms; Radiolarians; Southern Ocean; temperature reconstruction; transfer function |
| url | https://doi.org/10.1594/PANGAEA.973478 |