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Technical note: testing an improved index for analysing storm discharge-concentration hysteresis

Technical note: testing an improved index for analysing storm discharge-concentration hysteresis
Technical note: testing an improved index for analysing storm discharge-concentration hysteresis
Analysis of hydrochemical behaviour during storm events can provide new insights into the process controls on nutrient transport in catchments. The examination of storm behaviours using hysteresis analysis has increased in recent years, partly due to the increased availability of high temporal resolution data sets for discharge and water quality parameters. A number of these analyses involve the use of an index to describe the characteristics of a hysteresis loop in order to compare storm behaviours both within and between catchments. This technical note reviews the methods for calculation of the hysteresis index (HI) and explores a new more effective methodology. Each method is systematically tested and the impact of the chosen calculation on the results is examined. Recommendations are made regarding the most effective method of calculating a HI which can be used for comparing data between storms and between different water quality parameters and catchments.
1607-7938
625-632
Lloyd, C. E. M.
55b165eb-f156-42b4-9ef5-b84881a640ed
Freer, J. E.
338b5dd6-83a7-43a3-901d-d8ed2b00233b
Johnes, P. J.
dd7c0c67-9deb-45bd-80e9-2362f5fb2294
Collins, A. L.
0ab4072f-a112-48e5-9625-1d229aa63660
Lloyd, C. E. M.
55b165eb-f156-42b4-9ef5-b84881a640ed
Freer, J. E.
338b5dd6-83a7-43a3-901d-d8ed2b00233b
Johnes, P. J.
dd7c0c67-9deb-45bd-80e9-2362f5fb2294
Collins, A. L.
0ab4072f-a112-48e5-9625-1d229aa63660

Lloyd, C. E. M., Freer, J. E., Johnes, P. J. and Collins, A. L. (2016) Technical note: testing an improved index for analysing storm discharge-concentration hysteresis. Hydrology and Earth System Sciences, 20 (2), 625-632. (doi:10.5194/hess-20-625-2016).

Record type: Article

Abstract

Analysis of hydrochemical behaviour during storm events can provide new insights into the process controls on nutrient transport in catchments. The examination of storm behaviours using hysteresis analysis has increased in recent years, partly due to the increased availability of high temporal resolution data sets for discharge and water quality parameters. A number of these analyses involve the use of an index to describe the characteristics of a hysteresis loop in order to compare storm behaviours both within and between catchments. This technical note reviews the methods for calculation of the hysteresis index (HI) and explores a new more effective methodology. Each method is systematically tested and the impact of the chosen calculation on the results is examined. Recommendations are made regarding the most effective method of calculating a HI which can be used for comparing data between storms and between different water quality parameters and catchments.

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Published date: 4 February 2016
Organisations: Geography & Environment

Identifiers

Local EPrints ID: 389581
URI: https://eprints.soton.ac.uk/id/eprint/389581
ISSN: 1607-7938
PURE UUID: ddce83c4-469f-424b-b906-c2ffc759c89c

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Date deposited: 09 Mar 2016 11:46
Last modified: 09 Dec 2019 19:43

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