Oxygen microprofiles measured in situ in sediments of Atacama Trench and adjacent abyssal plains


Oxygen microprofiles were measured using an autonomous benthic lander system. Once the lander had stabilized at the seabed, an array of O2 microelectrodes was vertically moved across the sediment-water interface at a predefined resolution - measurements were recorded at each depth after a delay of a few seconds. When the array had reached the maximum measuring depth, sensors were retracted to the start position, and the array was moved horizontally before the measuring routine was repeated (Glud et al. 2021). Sensor signals were converted into O2 concentrations using a linear calibration curve that was based on measurements in the bottom water of known O2 concentration and measurements in the anoxic sediment layers.

DOI https://doi.pangaea.de/10.1594/PANGAEA.967174
Related Identifier References https://doi.pangaea.de/10.1594/PANGAEA.967175
Related Identifier References https://doi.org/10.1038/s43247-020-00087-2
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.967174
Creator Glud, Ronnie N (ORCID: 0000-0002-7069-893X); Wenzhöfer, Frank
Publisher PANGAEA
Publication Year 2024
Funding Reference Danish National Research Foundation https://doi.org/10.13039/501100001732 Crossref Funder ID DNRF145 Danish Center for Hadal Research, HADAL
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 322278 data points
Discipline Earth System Research
Spatial Coverage (-71.620W, -24.285S, -70.834E, -20.309N)
Temporal Coverage Begin 2018-03-06T00:31:00Z
Temporal Coverage End 2018-03-28T21:43:00Z