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Dual stable isotope analysis of nitrogen and oxygen in nitrate in groundwater from Northern Province Chalk in Yorkshire, UK

Dataset title Dual stable isotope analysis of nitrogen and oxygen in nitrate in groundwater from Northern Province Chalk in Yorkshire, UK
Dataset creators Josephine McSherry, University of Leeds
Dataset theme Geoscientific Information
Dataset abstract

Dual stable isotope analysis comprising nitrogen-15 and oxygen-18 ratios for groundwater samples collected every 2-3 months over one hydrogeological year from the East Riding of Yorkshire. Isotopic ratios for nitrogen-15, oxygen-18 are both presented as raw and processed to NAIR and VSMOW standards, respectively. The data are in the form of a Microsoft Excel workbook containing Isotope Ratio Mass Spectrometer runs.

The data were collected to understand key sources of nitrate contamination in Chalk groundwater and the dominant processes they undergo, and the extent of any attenuation. The Chalk catchments and the River Terrace Gravel catchment were compared, allowing conclusions to be drawn on the role of nitrate transformation, and the dominant location of transformations, to increase understanding of nitrate dynamics in agricultural systems.

Groundwater samples were collected by the University of Leeds, the Environment Agency, Yorkshire Water and South East Water. Nitrate isolation and data interpretation carried out by Josephine McSherry, supervised by L. Jared West and Simon Bottrell. Mass spectrometry was carried out by Rob Newton and Bob Jamieson at the University of Leeds. Bulk N fertiliser analysis carried out by BGS, Keyworth.

No isotopic data are absent from the dataset, however oxygen contamination (resulting from the isolation method and since resolved) severely affected run O34b-O. Hydrochemical data relevant to the groundwater samples are not included as they are the property of the Environment Agency, Yorkshire Water or South East Water.

Dataset content dates 01/11/2015 to 31/08/2019
Dataset spatial coverage

Kilham and Haisthorpe catchments in the East Riding of Yorkshire.

Southern Province Chalk, Hampshire

Medway River Terrace Gravels in Kent

Dataset supply format MS Excel workbook
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 25th January 2022
Dataset digital object identifier(DOI) 10.5285/aead7506-6523-4b5e-8591-9c895dd03d62
Dataset citation text McSherry, J. (2022). Dual stable isotope analysis of nitrogen and oxygen in nitrate in groundwater from Northern Province Chalk in Yorkshire, UK. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/aead7506-6523-4b5e-8591-9c895dd03d62
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#item171477