Glud, Ronnie N; Wenzhöfer, Frank (2024): Oxygen microprofiles measured in situ in sediments of Atacama Trench and adjacent abyssal plains [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.967174
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Published: 2024-05-02 • DOI registered: 2024-05-31
Abstract:
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.
Keyword(s):
Related to:
Glud, Ronnie N (2024): Porosity profiles of sediments in Atacama Trench and adjacent abyssal plains [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.967175
Glud, Ronnie N; Berg, Peter; Thamdrup, Bo; Larsen, Morten; Stewart, Heather A; Jamieson, Alan J; Glud, Anni; Oguri, Kazumasa; Sanei, Hamed; Rowden, Ashley A; Wenzhöfer, Frank (2021): Hadal trenches are dynamic hotspots for early diagenesis in the deep sea. Communications Earth & Environment, 2(1), 21, https://doi.org/10.1038/s43247-020-00087-2
Funding:
Danish National Research Foundation (DG), grant/award no. DNRF145: Danish Center for Hadal Research, HADAL
Coverage:
Median Latitude: -22.241441 * Median Longitude: -71.245388 * South-bound Latitude: -24.285000 * West-bound Longitude: -71.620367 * North-bound Latitude: -20.308550 * East-bound Longitude: -70.833933
Date/Time Start: 2018-03-06T00:31:00 * Date/Time End: 2018-03-28T21:43:00
Minimum DEPTH, sediment/rock: -0.28580 m * Maximum DEPTH, sediment/rock: 0.13230 m
Event(s):
SO261_4-1 * Latitude: -23.811983 * Longitude: -70.833933 * Date/Time: 2018-03-06T00:31:00 * Elevation: -2559.7 m * Campaign: SO261 * Basis: Sonne_2 * Method/Device: Bottom lander (B_LANDER) * Comment: FLUX-
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Site | Site | Glud, Ronnie N | |||
| 3 | Latitude of event | Latitude | ||||
| 4 | Longitude of event | Longitude | ||||
| 5 | Elevation of event | Elevation | m | |||
| 6 | Date/Time of event | Date/Time | ||||
| 7 | Profile ID | Profile ID | Glud, Ronnie N | |||
| 8 | DEPTH, sediment/rock | Depth sed | m | Glud, Ronnie N | Geocode | |
| 9 | Oxygen | O2 | µmol/l | Glud, Ronnie N | Clark type electrochemical Oxygen microsensor |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
322278 data points
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