Oxygen and hydrogen isotopic ratios from sea ice bottom, false bottom ice, under-ice meltwater layer and surface melt pond samples collected during MOSAiC leg 4 (PS122.4) ...

• Main Authors: Lange, Benjamin Allen, Granskog, Mats A, Meyer, Hanno, Bauch, Dorothea, Smith, Madison M, von Albedyll, Luisa, Raphael, Ian, Matero, Ilkka, Salganik, Evgenii
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: isotope composition; melt pond; Meltwater; MOSAiC20192020; oxygen and hydrogen isotopes; Sea ice; Gear; LATITUDE; LONGITUDE; Location; DATE/TIME; Sample ID; Salinity; Description; DEPTH, ice/snow; δ18O, water; δ Deuterium, water; DISTANCE; Core length; False bottom pucks; Comment; Ice corer; Mass spectrometer Finnigan MAT Delta-S ISOLAB; PS122/4; Polarstern; Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC; Polar Terrestrial Environmental Systems @ AWI AWI_Envi; Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean HAVOC; Arctic Ocean; ice core
• Online Access: https://dx.doi.org/10.1594/pangaea.943734; https://doi.pangaea.de/10.1594/PANGAEA.943734

Oxygen and hydrogen isotopic ratio samples were collected from sea ice and water samples. Coring and sampling were completed at six locations on July 25 for measurement of salinity and stable oxygen isotopic composition to better understand the meltwater sources for under-ice meltwater and false bottoms. Cores were collected using a corer (9 cm inner diameter; Mark II coring system, Kovacs Enterprises, US), and ice samples were collected from the bottom 10 centimeters of the ice core in 5 cm increments (0-5 and 5-10 cm above the bottom) and from the false bottom ice. Under-ice meltwater layer samples and water from directly below the false bottom were collected using a peristaltic pump. In order to minimize contamination from coring activities, under-ice meltwater samples from the meltwater layer in the void space between ice and false bottom were collected prior to coring through the false bottom. Surface melt pond water samples were collected by dipping plastic sample cups (rinsed with milliQ water) in the ...