Meland, Marius Y; Jansen, Eystein; Elderfield, Henry (2005): Compilation of Mg/Ca ratios of Neogloboquadrina pachyderma (sinistral) and SST estimates from the northern North Atlantic [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.227397, Supplement to: Meland, MY et al. (2005): Constraints on SST estimates for the northern North Atlantic/Nordic Seas during the LGM. Quaternary Science Reviews, 24(7-9), 835-852, https://doi.org/10.1016/j.quascirev.2004.05.011
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Published: 2005 (exact date unknown) • DOI registered: 2005-01-21
Abstract:
A map of estimated calcification temperatures of the planktic foraminifer Neogloboquadrina pachyderma sinistral (TNps) for the Nordic Seas and the northern North Atlantic for the Last Glacial Maximum was produced from oxygen isotopes with support of Mg/Ca ratios. To arrive at the reconstruction, several constraints concerning the plausible salinity and ?18O-fields were employed. The reconstruction indicates inflow of temperate waters in a wedge along the eastern border of the Nordic Seas and at least seasonally ice-free waters. The reconstruction from oxygen isotopes shows similarities with Mg/Ca based paleotemperatures in the southern and southeastern sector, while unrealistically high Mg/Ca values in the central Nordic Seas prevent the application of the method in this area. The oxygen isotope based reconstruction shows some agreement with temperature reconstructions based on the modern analogue technique, but with somewhat lower temperatures and a stronger internal gradient inside the Nordic Seas. All told, our results suggest a much more ice-free and dynamic high latitude ocean than the CLIMAP reconstruction.
Project(s):
Coverage:
Median Latitude: 65.404414 * Median Longitude: -4.049069 * South-bound Latitude: 50.687600 * West-bound Longitude: -30.478667 * North-bound Latitude: 87.611200 * East-bound Longitude: 148.139800
Date/Time Start: 1966-10-18T00:00:00 * Date/Time End: 1999-08-01T00:00:00
Minimum DEPTH, sediment/rock: 0.315 m * Maximum DEPTH, sediment/rock: 12.135 m
Event(s):
BOFS5K (BOFS11882#4) * Latitude: 50.687600 * Longitude: -21.863500 * Date/Time: 1989-07-26T00:00:00 * Elevation: -3547.0 m * Location: Northeast Atlantic * Campaign: D184 * Basis: Discovery (1962) * Method/Device: Kasten corer (KAL) * Comment: BOFS-ID 5332
BOFS7K (BOFS11884#4) * Latitude: 51.753100 * Longitude: -22.538800 * Date/Time: 1989-07-28T00:00:00 * Elevation: -2429.0 m * Location: Northeast Atlantic * Campaign: D184 * Basis: Discovery (1962) * Method/Device: Kasten corer (KAL) * Comment: BOFS-ID 5436
BOFS8K (BOFS11886#2) * Latitude: 52.503300 * Longitude: -22.062300 * Date/Time: 1989-07-30T00:00:00 * Elevation: -4045.0 m * Location: Northeast Atlantic * Campaign: D184 * Basis: Discovery (1962) * Method/Device: Kasten corer (KAL) * Comment: BOFS-ID 5564
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 6 | Depth, top/min | Depth top | m | Meland, Marius Y | ||
| 7 | Depth, bottom/max | Depth bot | m | Meland, Marius Y | ||
| 8 | Depth comment | Depth comm | Meland, Marius Y | |||
| 9 | Number | No | Meland, Marius Y | |||
| 10 | Magnesium/Calcium ratio | Mg/Ca | Meland, Marius Y | Calculated | Neogloboquadrina pachyderma (sinistral) | |
| 11 | Sea surface temperature, annual mean | SST (1-12) | °C | Meland, Marius Y | Calculated | |
| 12 | Reference/source | Reference | Meland, Marius Y |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
174 data points