Sortable silt and grain-size end-member data from the marine sediment core SANBIF-777 (Southwest Atlantic)
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| Main Authors: | , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2026
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| _version_ | 1867169173716598784 |
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| author | Sambugaro, Júlia Barros, Rodrigo Baptista de Goya, Samara Cazzoli y Sousa, Silvia H M Mahiques, Michel Michaelovitch |
| author_facet | Sambugaro, Júlia Barros, Rodrigo Baptista de Goya, Samara Cazzoli y Sousa, Silvia H M Mahiques, Michel Michaelovitch |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This dataset supports a high-resolution paleoceanographic reconstruction of Antarctic Intermediate Water (AAIW) transport and Intermediate Western Boundary Current (IWBC) variability over the past 16,300 years based on sediment core SANBIF-777, retrieved from the southeastern Brazilian continental margin (1136 m depth). The data include sortable silt percentages, mean sortable silt grain size, end-members, and age-depth information derived from calibrated radiocarbon dates. Grain size distributions were measured at 1 cm resolution and used to infer changes in bottom current strength associated with the IWBC, which transports AAIW northward. These measurements provide insights into the response of intermediate water circulation to abrupt climate events such as the Younger Dryas and Bølling-Allerød. These data contribute to a better understanding of past intermediate-depth circulation and its role in millennial-scale climate variability. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_990379 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Sortable silt and grain-size end-member data from the marine sediment core SANBIF-777 (Southwest Atlantic) Sambugaro, Júlia Barros, Rodrigo Baptista de Goya, Samara Cazzoli y Sousa, Silvia H M Mahiques, Michel Michaelovitch AGE; Alpha-Crucis; Antarctic Intermediate Water; BasEMMA, Excel macro; Calculated, according to grain size analyses of McCave et al. (1995) and Wu et al. (2021); DEPTH, sediment/rock; End member 1; End member 2; End member 3; end-member modelling; GC; grain-size; Gravity corer; Intermediate Western Boundary Current; OBS; SANBIF-777; Size fraction 0.063-0.010 mm, sortable silt; Size fraction 0.125-0.010 mm; Sortable silt; Sortable-silt + fine sand mean; Sortable-silt mean; Sortable silt mean grain size analysis (McCave et al., 1995); South Brazil Bight, Santos Basin This dataset supports a high-resolution paleoceanographic reconstruction of Antarctic Intermediate Water (AAIW) transport and Intermediate Western Boundary Current (IWBC) variability over the past 16,300 years based on sediment core SANBIF-777, retrieved from the southeastern Brazilian continental margin (1136 m depth). The data include sortable silt percentages, mean sortable silt grain size, end-members, and age-depth information derived from calibrated radiocarbon dates. Grain size distributions were measured at 1 cm resolution and used to infer changes in bottom current strength associated with the IWBC, which transports AAIW northward. These measurements provide insights into the response of intermediate water circulation to abrupt climate events such as the Younger Dryas and Bølling-Allerød. These data contribute to a better understanding of past intermediate-depth circulation and its role in millennial-scale climate variability. |
| title | Sortable silt and grain-size end-member data from the marine sediment core SANBIF-777 (Southwest Atlantic) |
| topic | AGE; Alpha-Crucis; Antarctic Intermediate Water; BasEMMA, Excel macro; Calculated, according to grain size analyses of McCave et al. (1995) and Wu et al. (2021); DEPTH, sediment/rock; End member 1; End member 2; End member 3; end-member modelling; GC; grain-size; Gravity corer; Intermediate Western Boundary Current; OBS; SANBIF-777; Size fraction 0.063-0.010 mm, sortable silt; Size fraction 0.125-0.010 mm; Sortable silt; Sortable-silt + fine sand mean; Sortable-silt mean; Sortable silt mean grain size analysis (McCave et al., 1995); South Brazil Bight, Santos Basin |
| url | https://doi.org/10.1594/PANGAEA.990379 |