Description: 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.
Global identifier:
Doi(
"10.1594/PANGAEA.997076",
)
DataMeasurements(
DataMeasurements {
domain: Unspecified,
station: None,
measured_variables: [
"Alkalinity, total",
"Calcium",
"DEPTH, water, experiment",
"Incubation time",
"Nitrogen, elemental",
"Oxygen",
"Sample code/label",
"Sampling date/time, experiment",
"Treatment",
"Type of study",
],
methods: [
"Inductively coupled plasma optical emission spectrometry (ICP-OES)",
"Oxygen sensor spots, Pyroscience, OXSP5",
"Titration, Metrohm, 876 Dosimat Plus",
],
},
)
Tags: Sensor ? Stickstoff ? Studie ? Wasserprobe ? Sediment ? Wasser ? Siedlungsverdichtung ? Carbon Dioxide Removal ? Daten ? Wasseraufbereitung ? Candidatus Electrothrix ? Ocean Alkalinity Enhancement (OAE) ? Transcriptomics ? cable bacteria ? enhanced weathering ? seasonal hypoxia ?
Region: Eckernförder Bucht
Bounding boxes: 10.177833° .. 10.177833° x 54.572167° .. 54.572167° 9.95372° .. 9.95372° x 54.48322° .. 54.48322°
License: Creative Commons Namensnennung 4.0 (Data access requires registration)
Language: Englisch/English
Modified: 2026-09-02
Last harvest: 04.09.2026 02:50
Time ranges: 2025-02-18 - 2025-03-19
Accessed 1 times.