Diffusive oxygen uptake rates measured during POLARSTERN cruise PS94 (TransArcII) to the Barents Sea and central Arctic


We assessed diffusive oxygen uptake rates by measuring ex situ porewater oxygen microprofiles. Sediment cores were placed in a water bath and a stirring device was implemented in each core to homogenize the overlying water column and, to create a diffusive boundary layer (DBL) that was similar to in situ conditions. Microprofiles were measured using fiber-optical needle sensors (OXR50 & OXR230) constructed at Pyroscience® (Germany). After two-point calibration (0 % & 100 %) with bottom water taken from the rosette at the same station, the sensors were connected to a Firesting O2 oxygen meter (Pyroscience®) and controlled by using a computer-run micromanipulator. Vertical resolution was programmed to 100 μm, with resting time per data point of 5 seconds. Profile length was programed to be 6.5 cm.

DOI https://doi.org/10.1594/PANGAEA.907883
Related Identifier IsPartOf https://doi.org/10.1594/PANGAEA.907889
Related Identifier IsSupplementTo https://doi.org/10.3389/fmars.2020.00426
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.907883
Creator Kiesel, Joshua; Link, Heike (ORCID: 0000-0002-8484-845X); Wenzhöfer, Frank
Publisher PANGAEA
Publication Year 2019
Funding Reference Federal Ministry of Education and Research https://doi.org/10.13039/501100002347 Crossref Funder ID 03G0833E https://foerderportal.bund.de/foekat/jsp/SucheAction.do?actionMode=view&fkz=03G0833E Verbundprojekt: WTZ RUS: System Laptev-See: TRANSDRIFT; Seventh Framework Programme https://doi.org/10.13039/100011102 Crossref Funder ID 294757 https://cordis.europa.eu/project/id/294757 Assessment of bacterial life and matter cycling in deep-sea surface sediments
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 58 data points
Discipline Earth System Research
Spatial Coverage (-121.751W, 72.734S, 22.826E, 89.916N); Barents Sea; Arctic Ocean
Temporal Coverage Begin 2015-08-18T20:46:00Z
Temporal Coverage End 2015-10-08T10:20:00Z