An evaluation of the hysteresis in chemical concentration–discharge (C–Q) relationships from drained, intensively managed grasslands in southwest England

A - Papers appearing in refereed journals

Eludoyin, A. O., Griffith, B., Orr, R. J., Bol, R., Quine, T. A. and Brazier, R. E. 2017. An evaluation of the hysteresis in chemical concentration–discharge (C–Q) relationships from drained, intensively managed grasslands in southwest England. Hydrological Sciences Journal. 62 (8), pp. 1243-1254.

AuthorsEludoyin, A. O., Griffith, B., Orr, R. J., Bol, R., Quine, T. A. and Brazier, R. E.
Abstract

This study examined the hysteresis exhibited in concentration–discharge (C–Q) relationships in the runoff from four hydrologically separated fields (catchments) at an intensively managed grassland. The objectives were to examine C–Q relationships constructed from high-resolution time series of flow, temperature, pH, conductivity, nitrate and turbidity, and their implications for hydrological processes. High-resolution datasets from the quality assured records of the Rothamsted Research North Wyke Farm Platform in the UK were examined using a graphical method and cross-correlation statistics. The study found that storm events based C–Q hysteresis reflects the cross-correlation that is generally hidden in time series analysis of large datasets, and that although Q and water quality variables can be effectively influenced by catchment size, the C–Q relationship is less significantly influenced. The dominant C–Q relationships of the water variables in the study area reflect that saturated overland flow was prevalent during the study period in the catchments, while the CCF results indicate coupled transfer of sediments and solute in the area at lag ≥ 0.

Year of Publication2017
JournalHydrological Sciences Journal
Journal citation62 (8), pp. 1243-1254
Digital Object Identifier (DOI)doi:10.1080/02626667.2017.1313979
Open accessPublished as non-open access
Output statusPublished
Publication dates
Online29 Apr 2017
Publication process dates
Accepted05 Dec 2016
PublisherTaylor & Francis
Taylor & Francis
Copyright licensePublisher copyright
ISSN0262-6667

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