Total oxygen fluxes in the HAUSGARTEN area (Fram Strait) in 2014 (POLARSTERN cruise PS85) ...

For ex situ total oxygen uptake (TOU) measurements, sediment cores recovered by a MUC were used. The sediment cores were closed airtight with no air bubbles in the overlying water. The distance between the SWI and the edge of the lid was measured for volume calculations of the overlying water. An op...

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Bibliographic Details
Main Authors: Braeckman, Ulrike, Hoffmann, Ralf
Format: Dataset
Language:English
Published: PANGAEA 2018
Subjects:
Event label
Date/Time of event
Latitude of event
Longitude of event
Elevation of event
Station label
Replicate
DEPTH, sediment/rock
Oxygen uptake, total
Multicorer with television
MultiCorer
Bottom lander, chamber
PS85
Polarstern
Long-term Investigation at AWI-Hausgarten off Svalbard Hausgarten
Fram Strait
Svalbard
Online Access:https://dx.doi.org/10.1594/pangaea.884606
https://doi.pangaea.de/10.1594/PANGAEA.884606
Description
Summary:For ex situ total oxygen uptake (TOU) measurements, sediment cores recovered by a MUC were used. The sediment cores were closed airtight with no air bubbles in the overlying water. The distance between the SWI and the edge of the lid was measured for volume calculations of the overlying water. An optical oxygen microsensor (Pyroscience, Aachen, Germany) with a tip size diameter of 50 µm was installed in the lid, allowing a continuous measurement of the oxygen concentration in the overlying water. The sediment cores were incubated in darkness for >40 h and the overlying water was kept homogenised by rotating magnets over that period. For in situ TOU measurements, benthic chambers (K/MT 110, KUM, Kiel, Germany) with an inner dimension of 20x20 cm were used. These chambers were attached at autonomous benthic lander and were pushed into the sediment and thereby enclosed a sediment volume of approximately 8 L and an overlying water volume of approximately 2-3 L. The oxygen concentration was measured in the ...

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