Lo Prete, Daniel; García Chapori, Natalia Luz; Laprida, Cecilia; Chiessi, Cristiano Mazur; Mayr, Christoph; Violante, Roberto (2022): Acelerator espectrometry radiocarbon dates and calibrated ages used in the age-depth model of sediment core SHN-T295 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.946578
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Abstract:
Although the circulation of the western South Atlantic tightly controls the meridional heat and salt transport, our knowledge about its long-term past changes is still fragmented and sparse. While many studies focused their attention on the last glacial and deglaciation periods, Holocene studies mostly lack of an integrated analysis from the subtropical and midlatitude regions. The analysis of selected regionally distributed paleoceanographic records along the western South Atlantic between 27° and 39°S reveals that, although weaker in amplitude than the dramatic shifts of the last glacial cycle, the Brazil-Malvinas Confluence region showed substantial changes throughout the Holocene. The shift in the location of both, southern and northern source waters in the Atlantic implied a strengthening of the Southern Atlantic Meridional Overturning Circulation since the Mid-Holocene. This, together with the progressive southward displacement of the Brazil-Malvinas Confluence confirms the progressive weakening of the Atlantic Meridional Overturning Circulation towards the preindustrial times.
Supplement to:
García Chapori, Natalia Luz; Laprida, Cecilia; Lo Prete, Daniel; Chiessi, Cristiano Mazur; Mayr, Christoph; Violante, R A (2022): Holocene palaeoceanographic history of the western South Atlantic. Journal of South American Earth Sciences, 117, 103896, https://doi.org/10.1016/j.jsames.2022.103896
Coverage:
Latitude: -37.466667 * Longitude: -54.000000
Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 0.14 m
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample ID | Sample ID | Lo Prete, Daniel | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Lo Prete, Daniel | Geocode | |
| 3 | Age, dated material | Dated material | Lo Prete, Daniel | |||
| 4 | Age, dated | Age dated | ka | Lo Prete, Daniel | Age, 14C AMS | |
| 5 | Age, dated standard deviation | Age dated std dev | ± | Lo Prete, Daniel | ||
| 6 | Calendar age | Cal age | ka BP | Lo Prete, Daniel | Age, 14C calibrated | wm ka BP |
| 7 | Calendar age, minimum/young | Cal age min | ka BP | Lo Prete, Daniel | 95 % | |
| 8 | Calendar age, maximum/old | Cal age max | ka BP | Lo Prete, Daniel | 95 % |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
21 data points
Data
| 1 Sample ID | 2 Depth sed [m] | 3 Dated material | 4 Age dated [ka] | 5 Age dated std dev [±] | 6 Cal age [ka BP] | 7 Cal age min [ka BP] | 8 Cal age max [ka BP] |
|---|---|---|---|---|---|---|---|
| SHN-T295 0-1 | 0.00 | multiple planktonic foraminifera | 1.623 | 0.032 | 1.090 | 0.555 | 1.701 |
| SHN-T295 5-6 | 0.05 | forams plank | 5.295 | 0.029 | 5.496 | 4.733 | 6.277 |
| SHN-T295 14-15 | 0.14 | forams plank | 10.800 | 0.040 | 11.852 | 11.111 | 12.689 |