NERC Data Catalogue Service
Carbon dioxide flux and isotopic composition from sedimentary rock weathering, Waiapu River catchment, New Zealand
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).
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Identification info
- Metadata Language
- English (en)
- Dataset Reference Date ()
- 2022-05-24
University of Oxford
-
Robert Hilton
(
Professor of Sedimentary Geology
)
Department of Earth Sciences, South Parks Road Oxford
,
Oxford
,
OX1 3AN
,
- Maintenance and update frequency
- notApplicable
- GEMET - INSPIRE themes
- BGS Thesaurus of Geosciences
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- Carbon isotopes
- Carbon dioxide
- Weathering
- Sedimentary rocks
- Keywords
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- NERC_DDC
- Limitations on Public Access
- otherRestrictions
- Other constraints
- licenceOGL
- Use constraints
- otherRestrictions
- Other constraints
- The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
- Other constraints
- Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
- Spatial representation type
- vector
- Topic category
-
- Geoscientific information
- Extent
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NEW ZEALAND [id=590000]
- Dataset Reference Date ()
- 1979
- Extent
-
NZ
- Dataset Reference Date ()
- 2009
- Extent
-
NZL
- Dataset Reference Date ()
- 2009
N
S
E
W
))
- Begin date
- 2018-04-29
- End date
- 2018-05-05
Spatial Reference System
No information provided.
Distribution Information
- Data format
-
-
MS Excel
()
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MS Excel
()
- Resource Locator
- Data
- Resource Locator
- Digital Object Identifier (DOI)
- Resource Locator
- Published Paper
- Resource Locator
- Data
- Resource Locator
- Digital Object Identifier (DOI)
- Resource Locator
- Published Paper
- Quality Scope
- dataset
- Other
- dataset
Report
- Dataset Reference Date ()
- 2011
- Explanation
- See the referenced specification
- Degree
Report
- Dataset Reference Date ()
- 2010-12-08
- Explanation
- See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
- Degree
- Statement
- Rock chambers to measure CO2 fluxes were installed following the method of Soulet et al., (2018), Biogeosciences, with each chamber drilled directly into bare mudstones undergoing weathering, using a hand auger. 5 different chambers were installed over a transect of ~ 10 m length in a gully in the Waiapu catchment, New Zealand (37.85986° S, 178.19028° E). CO2 fluxes were measured using an infra-red gas analyser, and a molecular sieve sampling system to trap CO2. Repeatedly measured CO2 fluxes can be compared to changes in environmental conditions, including air and chamber temperatures, rainfall and river flow. Furthermore, the carbon isotopic composition of CO2 was measured by IRMS and AMS for source identification. In this process, a contaminant was identified, which was associated with the chamber installation, that can be traced in the gas samples that were collected within up to 4 days following the installation.
Metadata
- File identifier
- e114b1d2-e7df-05fa-e053-0937940a4f86 XML
- Metadata Language
- English (en)
- Resource type
- dataset
- Metadata Date
- 2023-06-27
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3
British Geological Survey
Environmental Science Centre,Keyworth
,
NOTTINGHAM
,
NOTTINGHAMSHIRE
,
NG12 5GG
,
United Kingdom
+44 115 936 3100
