Organic marker compounds in surface sediments from the Nordic Seas ...

• Main Authors: Müller, Juliane, Wagner, Axel, Fahl, Kirsten, Stein, Ruediger, Prange, Matthias, Lohmann, Gerrit
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: Event label; Location of event; Latitude of event; Longitude of event; Elevation of event; DEPTH, sediment/rock; 2,6,10,14-Tetramethyl-7-3-methylpent-4-enylpentadecane per unit sediment mass; 2,6,10,14-Tetramethyl-7-3-methylpent-4-enylpentadecane, per unit mass total organic carbon; 24-Methylcholesta-5,22E-dien-3beta-ol per unit sediment mass; 24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol per unit sediment mass; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; n-Alkane C15; n-Alkane C15, per unit mass total organic carbon; n-Alkane C17; n-Alkane C17, per unit mass total organic carbon; n-Alkane C19; n-Alkane C19, per unit mass total organic carbon; Short-chain n-alkanes, C15H32+C17H36+C19H40 per unit sediment mass; Short-chain n-alkanes, C15H32+C17H36+C19H40, per unit mass total organic carbon; Phytoplankton biomarker Brassicasterol IP25 index; Phytoplankton biomarker Dinosterol IP25 index; Phytoplankton biomarker short-chain n-alkanes IP25 index; MultiCorer; Giant box corer; Ocean bottom seismometer; Gas chromatography - Mass spectrometry GC-MS; Calculated, see references; ARK-XVI/1; ARK-XVIII/1; ARK-XIX/4a; ARK-X/2; Polarstern; Integrierte Analyse zwischeneiszeitlicher Klimadynamik INTERDYNAMIK; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Greenland; East Greenland; Nordic Seas; North Atlantic; Sea ice; Spitsbergen
• Online Access: https://dx.doi.org/10.1594/pangaea.759566; https://doi.pangaea.de/10.1594/PANGAEA.759566

Organic geochemical analyses of marine surface sediments from the continental margins of East Greenland and West Spitsbergen provide for a biomarker-based estimate of recent sea ice conditions in the northern North Atlantic. By means of the sea ice proxy IP25 and phytoplankton derived biomarkers (e.g. brassicasterol, dinosterol) we reconstruct sea ice and sea surface conditions, respectively. The combination of IP25 with a phytoplankton marker (in terms of a phytoplankton marker-IP25 index; PIP25) proves highly valuable to properly interpret the sea ice proxy signal as an under- or overestimation of sea ice coverage can be circumvented. A comparison of this biomarker-based assessment of the sea ice distribution in the study area with (1) modern remote sensing data and (2) numerical modelling results reveals a good agreement between organic geochemical, satellite and modelling observations. The reasonable simulation of modern sea ice conditions by means of a regional ocean-sea ice model demonstrates the ... : For further details on the total organic carbon data cited in the article we refer to the data set entries by Kierdorf (2006) doi:10.1594/PANGAEA.499864 and Birgel and Stein (2004) doi:10.1594/PANGAEA.191089. Dataset has been reformated after discussion with the PI. ...