Wong, Wanyee; Risebrobakken, Bjørg; Ödalen, Malin; Tisserand, Amandine; Fahl, Kirsten; Stein, Ruediger; Jansen, Eystein (2025): Biomarker results from the eastern Fram Strait between 40 and 33.5 ka b2k [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.980706 (DOI registration in progress)
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2025-04-14
Abstract:
We present a biomarker dataset from marine sediment core MD99-2304, retrieved from the eastern Fram Strait (77°37'15.6N, 9°56'54E) at a water depth of 1348 m. The core was collected using a piston corer during the Marion Dufresne IMAGES 5 expedition (leg MD114) in 1999. This dataset provides sea ice extent in the eastern Fram Strait between 40 and 33.5 ka b2k, covering a period within Marine Isotope Stage 3 (MIS 3). With a temporal resolution of 20–40 years per sample, it contributes to the mechanical understanding of abrupt climate change during Dansgaard-Oeschger (D-O) events.
The biomarker analysis was conducted at the Alfred Wegener Institute (AWI), Germany, in 2022 and 2023. The measured biomarkers include Total Organic Carbon (TOC) (%), Highly Branched Isoprenoids (HBIs) IP25, HBI diene, HBI-III (Z-isomer), and HBI III (E-isomer), and the sterols brassicasterol, dinosterol, campesterol, and sitosterol (μg/TOC). Biomarker measurements were performed using an Agilent 7890B Gas Chromatograph (GC) equipped with a 30 m DB-1MS column (0.25 mm i.d., 0.25 µm film thickness) and coupled to an Agilent 5977A mass selective detector (MSD, 70 eV constant ionization potential, Scan 50–550 m/z, 1 scan/s, ion source temperature 230°C, Performance Turbo Pump), with selected ion monitoring mode (SIM) for HBIs and full scan mode (50-550 m/Z) for sterols. The balance factors (c) for PIP25 indices are 2.82 for PIIIIP25 (IP25-HBI-III (Z)), 0.025 for PBIP25 (IP25-brassicasterol), and 0.044 for PDIP25 (IP25-dinosterol). TOC measurement was conducted using a Leco CS-125 Carbon-Sulfur Analyzer.
The age model of MD99-2304 is established by tuning low field magnetic susceptibility to the magnetic susceptibility of Core MD95-2010 from the Norwegian Sea (Kissel et al., 1999); updated in Sadatzki et al. (2020), and the age model of MD95-2010 was tied to the chronology of MD99-2284 (Berben et al., 2020). The age model for MD99-2304 was established by tuning its low-field magnetic susceptibility to that of core MD95-2010 from the Norwegian Sea (Kissel et al., 1999; Sadatzki et al., 2020). The chronology of MD95-2010 was further tied to core MD99-2284 (Berben et al., 2020), ensuring a robust age framework for the dataset.
Supplement to:
Wong, Wanyee; Risebrobakken, Bjørg; Ödalen, Malin; Tisserand, Amandine; Fahl, Kirsten; Stein, Ruediger; Jansen, Eystein (in prep.): Ocean control on sea ice in the Nordic Seas.
Related to:
Wong, Wanyee; Risebrobakken, Bjørg; Fahl, Kirsten; Stein, Ruediger; Jansen, Eystein; Steinsland, Kristine; Kissel, Catherine (2024): Biomarker results from the eastern Fram Strait between 40 and 36.5 ka b2k [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971113
References:
Berben, Sarah M P; Dokken, Trond M; Abbott, Peter M; Cook, Eliza; Sadatzki, Henrik; Simon, Margit H; Jansen, Eystein (2020): Independent tephrochronological evidence for rapid and synchronous oceanic and atmospheric temperature rises over the Greenland stadial-interstadial transitions between ca. 32 and 40 ka b2k. Quaternary Science Reviews, 236, 106277, https://doi.org/10.1016/j.quascirev.2020.106277
Kissel, Catherine; Laj, Carlo E; Labeyrie, Laurent D; Dokken, Trond; Voelker, Antje H L; Blamart, Dominique (1999): Rapid climatic variations during marine isotopic stage 3: magnetic analysis of sediments from Nordic Seas and North Atlantic. Earth and Planetary Science Letters, 171(3), 489-502, https://doi.org/10.1016/S0012-821X(99)00162-4
Sadatzki, Henrik; Maffezzoli, Niccolò; Dokken, Trond; Simon, Margit H; Berben, Sarah M P; Fahl, Kirsten; Kjær, Helle Astrid; Spolaor, Andrea; Stein, Ruediger; Vallelonga, Paul T; Vinther, Bo Møllesøe; Jansen, Eystein (2020): Rapid reductions and millennial-scale variability in Nordic Seas sea ice cover during abrupt glacial climate changes. Proceedings of the National Academy of Sciences of the United States of America, 117(47), 29478-29486, https://doi.org/10.1073/pnas.2005849117
Project(s):
ABRUPT Arctic Climate Change (ABRUPT)
Funding:
Coverage:
Latitude: 77.621067 * Longitude: 9.948333
Date/Time Start: 1999-08-01T00:00:00 * Date/Time End: 1999-08-01T00:00:00
Minimum DEPTH, sediment/rock: 8.1325 m * Maximum DEPTH, sediment/rock: 9.7475 m
Event(s):
MD99-2304 (3280N) * Latitude: 77.621067 * Longitude: 9.948333 * Date/Time: 1999-08-01T00:00:00 * Elevation: -1348.0 m * Recovery: 22.885 m * Location: Spitsbergen slope * Campaign: MD114 (IMAGES V) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Corer (CALYPSO)
Parameter(s):
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:
4566 data points
Download Data (login required; moratorium until 2026-02-28)
View dataset as HTML (shows only first 2000 rows)