Oxygen and hydrogen isotopes in water samples collected during Polarstern cruise PS100 in 2016

• Main Authors: Meyer, Hanno, Schaffer, Janin, Rabe, Benjamin, Rutgers van der Loeff, Michiel M
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2021
• Subjects: 18O; FRAM; GRIFF; Stable isotopes; Event label; Station label; Cast number; Bottle number; DEPTH, water; Pressure, water; Temperature, water; Temperature, water, potential; Salinity; Density, potential; Oxygen; δ18O, water; δ18O, standard deviation; δ Deuterium; δ Deuterium, standard deviation; Deuterium excess; CTD/Rosette; CTD Large; CTD, SEA-BIRD SBE 911plus, SN T5101-C3290; Calculated; derived from SBE43 oxygen sensor; Isotope ratio mass spectrometry; PS100; Polarstern; Global marine biogeochemical cycles of trace elements and their isotopes GEOTRACES; Greenland; East Greenland; Fram Strait; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.927429; https://doi.pangaea.de/10.1594/PANGAEA.927429

Oxygen and hydrogen isotopes are key tracers to identify the sources of fresh water in a seawater sample, especially to distinguish meteoric water from sea-ice meltwater. Water samples were collected from CTD-Rosette casts during Polarstern expedition PS100, July - September 2016, to the Fram Strait and East Greenland Shelf area. Unfiltered water was collected in 100-ml glass bottles. The bottles were rinsed three times with the sample and filled through a silicon tube, avoiding gas bubbles, until just below the rim. The bottles were closed air tight, waxed by dipping them upside down in a melted beewax/stearine mixture, and stored at 2-5°C. Mass spectrometric analysis was carried out in the AWI stable isotope laboratory in Potsdam.