Rossignol, Linda; Salgueiro, Emilia: Distance-weighted sea surface temperature data from sediment core MD99-2203 off Cape Hatteras, SW North Atlantic [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.992647 (dataset in review)
Abstract:
The data presented derive from sediment core MD99-2203, collected in 1999 off Cape Hatteras as part of the IMAGES project. The 41-m-long sedimentary sequence was retrieved during leg MD114 by the R/V Marion Dufresne, equipped with a Giant Calypso corer. The primary objective was to document paleoceanographic and paleoclimatic changes at 35°N in the southwestern North Atlantic, at the boundary between subtropical and subpolar gyre influences, over the past 50,000 years.
We present planktonic foraminifera percentages of main ecological groups to reconstruct oceanic conditions, particularly sea surface temperatures (SSTs), during the interval 26–50 ka, which includes Heinrich Stadials 3, 4, and 5. These datasets are directly compared with pollen data obtained from the same sample set. The analysis of planktonic foraminiferal assemblages was generally conducted at 10 cm intervals on the sand-size fraction (>150 µm). Approximately 300 foraminiferal specimens were counted per level using an Olympus SZH10 binocular microscope after splitting with an Otto microsplitter. Annual and seasonal SSTs were estimated using the SIMMAX technique (Pflaumann et al., 1996; doi:10.1029/95PA01743) with 10 analogs, applying regionally distance-weighted temperature estimates (SSTdw). The reported standard deviations reflect the unweighted temperature estimates of the 10 best analogs.
Supplement to:
Sanchez Goñi, Maria Fernanda; Rossignol, Linda; Londeix, Laurent; Extier, Thomas; Weitzel, Nils; Naughton, Filipa; López-Martínez, Constancia; Salgueiro, Emilia; Fourcade, Tiffanie; Grousset, Francis E (submitted): Land–Sea Thermal Decoupling and Iceberg Discharges in the Western North Atlantic During Heinrich Stadials 5-3. Quaternary Science Reviews
References:
Pflaumann, Uwe; Duprat, Josette M; Pujol, Claude; Labeyrie, Laurent D (1996): SIMMAX: A modern analog technique to deduce Atlantic sea surface temperatures from planktonic foraminifera in deep-sea sediments. Paleoceanography, 11(1), 15-36, https://doi.org/10.1029/95PA01743
Project(s):
Coverage:
Latitude: 34.973000 * Longitude: -75.201000
Date/Time Start: 1999-08-01T00:00:00 * Date/Time End: 1999-08-01T00:00:00
Minimum DEPTH, sediment/rock: 13.50 m * Maximum DEPTH, sediment/rock: 38.00 m
Event(s):
MD99-2203 (408US) * Latitude: 34.973000 * Longitude: -75.201000 * Date/Time: 1999-08-01T00:00:00 * Elevation: -620.0 m * Recovery: 38.05 m * Location: Cape Hateras * Campaign: MD114 (IMAGES V) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Corer (CALYPSO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Rossignol, Linda | Geocode – Sample depth | |
| 2 | Depth, corrected | Depth corr | m | Rossignol, Linda | ||
| 3 | AGE | Age | ka BP | Rossignol, Linda | Age, 14C | Geocode |
| 4 | Number | No | Rossignol, Linda | Number of modern analogs | ||
| 5 | Sea surface temperature | SST | °C | Rossignol, Linda | Reconstructed, modern analogue technique, according to Pflaumann et al. (1996) | SIMMAX |
| 6 | Sea surface temperature, January-March | SST (1-3) | °C | Rossignol, Linda | Reconstructed, modern analogue technique, according to Pflaumann et al. (1996) | Distance weighted |
| 7 | Sea surface temperature, January-March, standard deviation | SST (1-3) std dev | ± | Rossignol, Linda | Reconstructed, modern analogue technique, according to Pflaumann et al. (1996) | Distance weighted |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1270 data points