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| Format: | Dataset Open Access |
| Language: | en |
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2005
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| Online Access: | https://doi.org/10.1594/PANGAEA.227397 |
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| _version_ | 1867170584533663744 |
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| author | Meland, Marius Y Jansen, Eystein Elderfield, Henry |
| author_facet | Meland, Marius Y Jansen, Eystein Elderfield, Henry |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_227397 |
| institution | PANGAEA |
| language | en |
| publishDate | 2005 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Compilation of Mg/Ca ratios of Neogloboquadrina pachyderma (sinistral) and SST estimates from the northern North Atlantic Meland, Marius Y Jansen, Eystein Elderfield, Henry 100-7; 2bis68Fgif; 3280N; 3664N/S; 52-43; 71-12; 71-15; 71-19; 79-26; 80-30; 80-42; 80-60; 94-13; 94-18; 94-25; 94-34; Arctic Ocean; ARK-VIII/3; BOFS10K; BOFS11882#4; BOFS11884#4; BOFS11886#2; BOFS11890#2; BOFS11896#1; BOFS11905#1; BOFS14K; BOFS17K; BOFS5K; BOFS7K; BOFS8K; Calculated; CALYPSO; Calypso Corer; Charles Darwin; D184; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Depth comment; Discovery (1962); Elevation of event; ENAM9409; Event label; GC; Giant box corer; GIK23357-4; GKG; Gravity corer; Gravity corer (Kiel type); Håkon Mosby; HM100-7; HM52-43; HM71; HM71-12; HM71-15/1; HM71-19/1; HM79; HM79-26; HM80; HM80-30; HM80-42; HM80-60; HM94; HM94-13; HM94-18; HM94-25; HM94-34; IMAGES I; IMAGES V; KAL; KAL15; Kasten corer; Kasten corer 15 cm; Latitude of event; Le Suroît; Lomonosov Ridge, Arctic Ocean; Longitude of event; M23357; M7/5; Magnesium/Calcium ratio; MARGO; Marion Dufresne (1995); MD101__Campaign; MD114; MD952010; MD95-2010; MD952011; MD95-2011; MD99-2284; MD99-2289; MD99-2304; Meteor (1986); Multiproxy Approach for the Reconstruction of the Glacial Ocean surface; N. Shetland channel; NEAP; NEAP-08K; North Atlantic Ocean; Northeast Atlantic; northern North Atlantic; Norwegian Sea; Number; PALEOCINAT; PC; Piston corer; Polarstern; PS19/185; PS19 ARCTIC91; PS2184-2; Reference/source; REYKJANES-RÜCKEN; Sea surface temperature, annual mean; SL; SO82; SO82_4-1; Sonne; Southern Vøring plateau; Spitsbergen slope; SU90-32; V23; V23-81; Vema; Voring Plateau 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. |
| title | Compilation of Mg/Ca ratios of Neogloboquadrina pachyderma (sinistral) and SST estimates from the northern North Atlantic |
| topic | 100-7; 2bis68Fgif; 3280N; 3664N/S; 52-43; 71-12; 71-15; 71-19; 79-26; 80-30; 80-42; 80-60; 94-13; 94-18; 94-25; 94-34; Arctic Ocean; ARK-VIII/3; BOFS10K; BOFS11882#4; BOFS11884#4; BOFS11886#2; BOFS11890#2; BOFS11896#1; BOFS11905#1; BOFS14K; BOFS17K; BOFS5K; BOFS7K; BOFS8K; Calculated; CALYPSO; Calypso Corer; Charles Darwin; D184; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Depth comment; Discovery (1962); Elevation of event; ENAM9409; Event label; GC; Giant box corer; GIK23357-4; GKG; Gravity corer; Gravity corer (Kiel type); Håkon Mosby; HM100-7; HM52-43; HM71; HM71-12; HM71-15/1; HM71-19/1; HM79; HM79-26; HM80; HM80-30; HM80-42; HM80-60; HM94; HM94-13; HM94-18; HM94-25; HM94-34; IMAGES I; IMAGES V; KAL; KAL15; Kasten corer; Kasten corer 15 cm; Latitude of event; Le Suroît; Lomonosov Ridge, Arctic Ocean; Longitude of event; M23357; M7/5; Magnesium/Calcium ratio; MARGO; Marion Dufresne (1995); MD101__Campaign; MD114; MD952010; MD95-2010; MD952011; MD95-2011; MD99-2284; MD99-2289; MD99-2304; Meteor (1986); Multiproxy Approach for the Reconstruction of the Glacial Ocean surface; N. Shetland channel; NEAP; NEAP-08K; North Atlantic Ocean; Northeast Atlantic; northern North Atlantic; Norwegian Sea; Number; PALEOCINAT; PC; Piston corer; Polarstern; PS19/185; PS19 ARCTIC91; PS2184-2; Reference/source; REYKJANES-RÜCKEN; Sea surface temperature, annual mean; SL; SO82; SO82_4-1; Sonne; Southern Vøring plateau; Spitsbergen slope; SU90-32; V23; V23-81; Vema; Voring Plateau |
| url | https://doi.org/10.1594/PANGAEA.227397 |