Thiele, Matthias; Surathu, Anil; Adam-Beyer, Nicole; Alawi, Malik; Müller, Christian; Voss, Maren; Melzner, Frank; Wallmann, Klaus; Böhnke-Brandt, Stefanie: Kiel Bight sediment core liner water-column data from sediment core incubation experiment in 2025 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.997076 (dataset in review), In: Thiele, M et al.: Experimental data on enhanced benthic weathering in seasonally hypoxic Baltic Sea sediments in 2025 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.997072 (dataset in review)
Abstract:
This dataset consists of water chemistry from within three calcite amended and three reference sediment cores from Kiel Bight from February 2025. Dissolved oxygen was monitored non-invasively using optical sensor spots (OXSP5, PyroScience) at 5cm above the sediment. Total alkalinity and calcium ion concentration were measured at regular intervals over four weeks, covering sediment settlement, calcite amendment, deoxygenation and reoxygenated phases. Water exchanges with N2 deoxygenated seawater-maintained calcite dissolution and N2 was determined at the end of the experiment. The dataset enables reconstruction of alkalinity generation, calcium release and oxygen dynamics during enhanced benthic weathering. This is supporting the assessments of CDR efficiency and benthic dynamics.
Keyword(s):
Project(s):
Funding:
Federal Ministry of Research, Technology and Space (BMFTR), grant/award no. 03F0965A: DAM CDRmare - RETAKE-2, GEOMAR
Coverage:
Latitude: 54.572167 * Longitude: 10.177833
Date/Time Start: 2025-02-18T00:00:00 * Date/Time End: 2025-03-19T00:00:00
Minimum DEPTH, water, experiment: 0.05 m * Maximum DEPTH, water, experiment: 0.05 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Type of study | Study type | Thiele, Matthias | |||
| 2 | Treatment | Treat | Thiele, Matthias | |||
| 3 | Sample code/label | Sample label | Thiele, Matthias | |||
| 4 | DEPTH, water, experiment | Depth water exp | m | Thiele, Matthias | Geocode – water column, above sediment | |
| 5 | Sampling date/time, experiment | Date/time sampling exp | Thiele, Matthias | date | ||
| 6 | Incubation time | Inc time | days | Thiele, Matthias | ||
| 7 | Oxygen | O2 | µmol/l | Thiele, Matthias | Oxygen sensor spots, Pyroscience, OXSP5 | |
| 8 | Alkalinity, total | AT | mmol(Eq)/l | Thiele, Matthias | Titration, Metrohm, 876 Dosimat Plus | |
| 9 | Calcium | Ca | mmol/l | Thiele, Matthias | Inductively coupled plasma optical emission spectrometry (ICP-OES) | |
| 10 | Nitrogen, elemental | N2 | µmol/l | Thiele, Matthias | dinitrogen |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
680 data points