Sarnthein, Michael; Blaser, Patrick (2025): Proxydata to reconstruct peak glacial-to-Heinrich-1 changes in Denmark Strait Overflow and sea water stratification in the Nordic Seas 22–15 cal ka [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.975993
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Published: 2025-02-21 • DOI registered: 2025-03-22
Abstract:
We present stable C and O isotope data and radiocarbon ages in the Nordic Seas as tracers of peak-glacial-to-Heinrich-1 changes of surface and deep-water temperature, salinity, nutrient content, ventilation, and ventilation age, now age-recalibrated by means of the 14C-plateau tuning technique. Its results compare well with ages of the NGRIP incremental age scale. Radiogenic Nd and Th/U isotopes are used to constrain the differential origins of bottom waters feeding the Denmark Strait Overflow.
Keyword(s):
Supplement to:
Sarnthein, Michael; Blaser, Patrick (2025): Peak glacial-to-Heinrich-1 changes in Denmark Strait Overflow and seawater stratification in the Nordic Seas, a switchboard of changes in Atlantic Meridional Overturning Circulation and the 'Nordic Heat Pump'. Quaternary Science Reviews, 355, 109181, https://doi.org/10.1016/j.quascirev.2025.109181
References:
Biastoch, Arne; Schwarzkopf, Franziska; Getzlaff, Klaus; Rühs, Siren; Martin, Torge; Scheinert, Markus; Schulzki, Tobias; Handmann, Patricia; Hummels, Rebecca; Böning, Claus W (2021): Regional imprints of changes in the Atlantic Meridional Overturning Circulation in the eddy-rich ocean model VIKING20X. Ocean Science, 17(5), 1177-1211, https://doi.org/10.5194/os-17-1177-2021
Blaser, Patrick; Lippold, Jörg; Gutjahr, Marcus; Frank, Norbert; Link, Jasmin M; Frank, Martin (2016): Extracting foraminiferal seawater Nd isotope signatures from bulk deep sea sediment by chemical leaching. Chemical Geology, 439, 189-204, https://doi.org/10.1016/j.chemgeo.2016.06.024
Millo, Christian; Sarnthein, Michael; Voelker, Antje H L; Erlenkeuser, Helmut (2006): Variability of the Denmark Strait Overflow during the Last Glacial Maximum. Boreas, 35(1), 50-60, https://doi.org/10.1111/j.1502-3885.2006.tb01112.x
Sarnthein, Michael; Grootes, Pieter Meiert; Mudelsee, Manfred (2024): Centennial to millennial-sale fluctuations of the Lake Suigetsu atmospheric 14C record represent real 14C features over last glacial-to-deglacial times. Radiocarbon, 66(6), 2000-2011, https://doi.org/10.1017/RDC.2023.47
Sarnthein, Michael; Stattegger, Karl; Dreger, Derek; Erlenkeuser, Helmut; Grootes, Pieter Meiert; Haupt, Bernd Joachim; Jung, Simon J A; Kiefer, Thorsten; Kuhnt, Wolfgang; Pflaumann, Uwe; Schäfer-Neth, Christian; Schulz, Hartmut; Schulz, Michael; Seidov, Dan; Simstich, Johannes; van Kreveld, Shirley A; Vogelsang, Elke; Voelker, Antje H L; Weinelt, Mara (2001): Fundamental modes and abrupt changes in North Atlantic circulation and climate over the last 60 ky - concepts, reconstruction and numerical modeling. In: Schäfer, W; Ritzrau, M; Schlüter & J. Thiede (eds.) The Northern North Atlantic: A Changing Environment, Springer Verlag, Berlin, 500 pp, 365-410, https://doi.org/10.1007/978-3-642-56876-3_21
Sessford, Evangeline; Jensen, Mari F; Tisserand, Amandine; Muschitiello, Francesco; Dokken, Trond; Nisancioglu, Kerim H; Jansen, Eystein (2019): Consistent fluctuations in intermediate water temperature off the coast of Greenland and Norway during Dansgaard-Oeschger events. Quaternary Science Reviews, 223, 105887, https://doi.org/10.1016/j.quascirev.2019.105887
Voelker, Antje H L (1999): Zur Deutung der Dansgaard-Oeschger Ereignisse in ultra-hochauflösenden Sedimentprofilen aus dem Europäischen Nordmeer (Dansgaard-Oeschger events in ultra-high resolution sediment records from the Nordic Seas). Berichte-Reports, Institut für Geowissenschaften, Universität Kiel, 9, 278 pp, https://doi.org/10.2312/reports-ifg.1999.9
Voelker, Antje H L; Haflidason, Haflidi (2015): Refining the Icelandic tephrachronology of the last glacial period – The deep-sea core PS2644 record from the southern Greenland Sea. Global and Planetary Change, 131, 35-62, https://doi.org/10.1016/j.gloplacha.2015.05.001
Funding:
European Commission (EC), grant/award no. 101065424: Quantitative reconstruction of past seawater oxygen concentrations, Denmark Strait Overflow
Coverage:
Median Latitude: 67.268330 * Median Longitude: -8.425835 * South-bound Latitude: 66.670000 * West-bound Longitude: -21.765000 * North-bound Latitude: 67.866660 * East-bound Longitude: 4.913330
Date/Time Start: 1986-07-13T00:00:00 * Date/Time End: 1994-09-19T07:20:00
Minimum Elevation: -1162.0 m * Maximum Elevation: -777.0 m
Event(s):
GIK23074-2 * Latitude: 66.670000 * Longitude: 4.913330 * Date/Time: 1986-07-13T00:00:00 * Elevation: -1162.0 m * Location: Norwegian Sea * Campaign: M2/2 * Basis: Meteor (1986) * Method/Device: Giant box corer (GKG)
PS2644-5 (PS31/160-5) * Latitude: 67.866660 * Longitude: -21.765000 * Date/Time: 1994-09-19T07:20:00 * Elevation: -777.0 m * Penetration: 10 m * Recovery: 9.18 m * Location: Denmark Strait * Campaign: ARK-X/2 (PS31) * Basis: Polarstern * Method/Device: Gravity corer (Kiel type) (SL) * Comment: 9 core sections: 0.18-1.18, 1.18-2.18, 2.18-3.18, 3.18-4.18, 4.18-5.18, 5.18-6.18, 6.18-7.18, 7.18-8.18, 8.18-9.18 m
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Sarnthein, Michael | |||
| 2 | Latitude of event | Latitude | Sarnthein, Michael | |||
| 3 | Longitude of event | Longitude | Sarnthein, Michael | |||
| 4 | Elevation of event | Elevation | m | Sarnthein, Michael | ||
| 5 | File content | Content | Sarnthein, Michael | |||
| 6 | Binary Object | Binary | Sarnthein, Michael |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
10 data points
Data
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| 1 Event | 2 Latitude | 3 Longitude | 4 Elevation [m] | 5 Content | 6 Binary |
|---|---|---|---|---|---|
| PS2644-5 | 67.8667 | -21.7650 | -777 | Listing of planktic and benthic 14C ages, age tie points derived from 14C plateau tuning, Marine Reservoir Ages (MRA), and benthic ventilation ages deduced for sediment Core PS2644 | Tab1a.xlsx |
| GIK23074-2 | 66.6700 | 4.9133 | -1162 | Listing of planktic and benthic 14C ages, age tie points derived from 14C plateau tuning, Marine Reservoir Ages (MRA), and benthic ventilation ages deduced for sediment Core GIK23074 | Tab1b.xlsx |
| PS2644-5 | 67.8667 | -21.7650 | -777 | Detrital and authigenic data of radiogenic eNd and Pb isotopes in Core PS2644, plotted vs. new age control based on 14C plateau tuning | Tab3.xlsx |
| GIK23074-2 | 66.6700 | 4.9133 | -1162 | Planktic d18O data of Völker (1999) plotted vs. new age control based on 14C plateau tuning (13.3 - 23.3 cal. ka) | Tab_GIK23074_planktic_d18O.xlsx |
| PS2644-5 | 67.8667 | -21.7650 | -777 | Planktic d18O + planktic and benthic d13C and d18O data measured on single benthic foraminifera specimens (Voelker, 1999) plotted vs. new age control based on 14C plateau tuning (15 � 22 cal. ka) | Tab_PS2644_planktic_d18O_d13C.xlsx |