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...

Full description

Bibliographic Details
Main Authors: Kiesel, Joshua, Link, Heike, Wenzhöfer, Frank
Format: Dataset
Language:English
Published: PANGAEA 2019
Subjects:
Barents Sea
central Arctic Ocean
Climate change
microbial abundance
organic-matter
Sediment oxygen uptake
Event label
Date/Time of event
Latitude of event
Longitude of event
Elevation of event
Oxygen uptake, diffusive
Comment
MultiCorer
Giant box corer
PS94
Polarstern
Assessment of bacterial life and matter cycling in deep-sea surface sediments ABYSS
System Laptev-Sea Transdrift TRANSDRIFT
Arctic
Arctic Ocean
laptev
Laptev Sea
Online Access:https://dx.doi.org/10.1594/pangaea.907883
https://doi.pangaea.de/10.1594/PANGAEA.907883
Description
Summary: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. ...

Similar Items