Carbon dioxide flux and isotopic composition from sedimentary rock weathering, Waiapu River catchment, New Zealand
| Dataset title | Carbon dioxide flux and isotopic composition from sedimentary rock weathering, Waiapu River catchment, New Zealand |
|---|---|
| Dataset creators | Tobias Roylands, Durham University, UK Robert G. Hilton, University of Oxford, UK Mark H. Garnett, NEIF Radiocarbon Laboratory, UK Guillaume Soulet, Ifremer, France |
| Dataset theme | Geoscientific Information |
| Dataset abstract | These data were collected to study oxidative weathering processes in the Waiapu River catchment, New Zealand, with potential carbon release sourced from the oxidation of petrogenic organic carbon or carbonate dissolution coupled to the oxidation of sulfide minerals. There, in mudstones exposed in a highly erosive gully complex, in situ CO2 emissions were measured with drilled gas accumulation chambers following the design by Soulet et al. (2018, Biogeosciences 15, 4087-4102, https://doi.org/10.5194/bg-15-4087-2018). Temporal and spatial variability in CO2 flux can be put in context with environmental changes (e.g., temperature and hydrology). For this, CO2 release from 5 different chambers, which were installed over a transect of ~ 10 m length in a gully above a nearby streambed, was measured several times over a short study period (circa one week). In addition, the gaseous CO2 storage (partial pressure) in the shallow weathering zone was measured prior to a CO2 flux measurement. To understand the source of CO2, gas samples were collected and their stable and radioactive carbon isotope compositions determined. In this process, we identified a contaminant, which was associated with the chamber installation, that can be traced in the gas samples that were collected within 4 days following the installation. Details of the subsequent data analysis and interpretation can be found in: Roylands et al. 2022, Chemical Geology: Capturing the short-term variability of carbon dioxide emissions from sedimentary rock weathering in a remote mountainous catchment, New Zealand. This work was supported by the European Research Council (Starting Grant to Robert G. Hilton, ROC-CO2 project, grant 678779). |
| Dataset content dates | 29/04/2018 - 05/05/2018 |
| Dataset spatial coverage | Gully complex in Waiapu River catchment, New Zealand 37.85986° S, 178.19028° E |
| Dataset supply format | MS Excel |
| Dataset language | English-United Kingdom |
| Dataset discovery metadata record | Discovery Link to the dataset's BGS Discovery Metadata record |
| Dataset publisher | NERC EDS National Geoscience Data Centre |
| Dataset publication date | 1st July 2022 |
| Dataset digital object identifier(DOI) | 10.5285/467fcf54-eb20-4a19-a62d-8867516de87c |
| Dataset citation text | Roylands, T., Hilton, R.G., Garnett, M.H., Soulet, G. (2022). Carbon dioxide flux and isotopic composition from sedimentary rock weathering, Waiapu River catchment, New Zealand. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/467fcf54-eb20-4a19-a62d-8867516de87c |
| Constraints and terms of use | This data set is available under Open Government Licence, subject to the following acknowledgement accompanying any reproduced materials: "Contains data supplied by permission of the Natural Environment Research Council [YEAR]". |
| Access the dataset | https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item173494 |
| Further Information | Published Paper: Tobias Roylands, Robert G. Hilton, Mark H. Garnett, Guillaume Soulet, Josephine-Anne Newton, Joanne L. Peterkin, Peter Hancock. Capturing the short-term variability of carbon dioxide emissions from sedimentary rock weathering in a remote mountainous catchment, New Zealand. |