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Civel-Mazens, Matthieu; Crosta, Xavier; Cortese, Giuseppe; Lowe, Vikki; Ikehara, Minoru; Itaki, Takuya; Kohfeld, Karen E (2024): Sediment cores MD19-3575CQ, MD19-3580, COR-1PC, PS2606-6 - subsurface, surface temperature (full resolution and resampled), and DeltaT records [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.973478

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Published: 2024-12-05 • DOI registered: 2024-12-05

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Abstract:
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.
Keyword(s):
diatoms; Radiolarians; Southern Ocean; temperature reconstruction; transfer function
Related to:
Civel-Mazens, Matthieu; Crosta, Xavier; Cortese, Giuseppe; Lowe, Vikki; Itaki, Takuya; Ikehara, Minoru; Kohfeld, Karen E (2024): Subantarctic jet migrations regulate vertical mixing in the Southern Indian. Earth and Planetary Science Letters, 642, 118877, https://doi.org/10.1016/j.epsl.2024.118877
References:
Civel-Mazens, Matthieu; Cortese, Giuseppe; Crosta, Xavier; Lawler, K A; Lowe, Vikki; Ikehara, Minoru; Itaki, Takuya (2023): New Southern Ocean transfer function for subsurface temperature prediction using radiolarian assemblages. Marine Micropaleontology, 178, 102198, https://doi.org/10.1016/j.marmicro.2022.102198
Crosta, Xavier; Shukla, Sunil; Ther, Olivier; Ikehara, Minoru; Yamane, Masako; Yokoyama, Yusuke (2020): Last Abundant Appearance Datum of Hemidiscus karstenii driven by climate change. Marine Micropaleontology, 157, 101861, https://doi.org/10.1016/j.marmicro.2020.101861
Lawler, Kelly-Anne; Cortese, Giuseppe; Civel-Mazens, Matthieu; Bostock, Helen C; Crosta, Xavier; Leventer, Amy; Lowe, Vikki; Rogers, John; Armand, Leanne K (2021): The Southern Ocean Radiolarian (SO-RAD) dataset: a new compilation of modern radiolarian census data. Earth System Science Data, 13(11), 5441-5453, https://doi.org/10.5194/essd-13-5441-2021
Coverage:
Median Latitude: -48.111508 * Median Longitude: 46.475219 * South-bound Latitude: -54.267330 * West-bound Longitude: 39.766670 * North-bound Latitude: -45.733200 * East-bound Longitude: 52.025300
Date/Time Start: 1994-05-11T00:00:00 * Date/Time End: 2019-03-04T00:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
7 datasets

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Datasets listed in this bundled publication

  1. Civel-Mazens, M; Crosta, X; Cortese, G et al. (2024): Radiolarian-based sub-surface temperatures in sediment core MD19-3575CQ. https://doi.org/10.1594/PANGAEA.973479
  2. Civel-Mazens, M; Crosta, X; Cortese, G et al. (2024): Radiolarian-based sub-surface temperatures in sediment core MD19-3580. https://doi.org/10.1594/PANGAEA.973480
  3. Civel-Mazens, M; Crosta, X; Cortese, G et al. (2024): Diatom based sea surface temperatures in sediment core MD19-3580. https://doi.org/10.1594/PANGAEA.973481
  4. Civel-Mazens, M; Crosta, X; Cortese, G et al. (2024): Radiolarian-based sub-surface temperatures in sediment core COR-1PC. https://doi.org/10.1594/PANGAEA.973482
  5. Civel-Mazens, M; Crosta, X; Cortese, G et al. (2024): Diatom based sea surface temperatures in sediment core PS2606-6. https://doi.org/10.1594/PANGAEA.973483
  6. Civel-Mazens, M; Crosta, X; Cortese, G et al. (2024): Sea surface temperatures of sediment core DCR-1PC and sub-surface temperatures of sediment core MD19-3575CQ resampled at a 3 kyrs interval. https://doi.org/10.1594/PANGAEA.973485
  7. Civel-Mazens, M; Crosta, X; Cortese, G et al. (2024): Sea surface temperatures and sub-surface temperatures of sediment core MD19-3580 resampled at a 3 kyrs interval. https://doi.org/10.1594/PANGAEA.973486