The University of Southampton
University of Southampton Institutional Repository

Technical note: testing an improved index for analysing storm nutrient hysteresis

Technical note: testing an improved index for analysing storm nutrient hysteresis
Technical note: testing an improved index for analysing storm nutrient 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.
1812-2116
7875-7892
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. (2015) Technical note: testing an improved index for analysing storm nutrient hysteresis. Hydrology and Earth System Sciences Discussions, 12 (8), 7875-7892. (doi:10.5194/hessd-12-7875-2015).

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.

PDF
hess-20-625-2016(1).pdf - Version of Record
Available under License Other.
Download (299kB)

More information

Published date: 13 August 2015
Organisations: Geography & Environment

Identifiers

Local EPrints ID: 389600
URI: https://eprints.soton.ac.uk/id/eprint/389600
ISSN: 1812-2116
PURE UUID: 72b123ee-ca79-48ea-9ef9-a76afc033ab0

Catalogue record

Date deposited: 09 Mar 2016 13:29
Last modified: 17 Jul 2017 19:33

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×