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Technical Note: Testing an Improved Index for Analysing Storm Nutrient Hysteresis : Volume 12, Issue 8 (13/08/2015)

By Lloyd, C. E. M.

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Book Id: WPLBN0004012442
Format Type: PDF Article :
File Size: Pages 18
Reproduction Date: 2015

Title: Technical Note: Testing an Improved Index for Analysing Storm Nutrient Hysteresis : Volume 12, Issue 8 (13/08/2015)  
Author: Lloyd, C. E. M.
Volume: Vol. 12, Issue 8
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Freer, J. E., Johnes, P. J., M. Lloy, C. E., & Collins, A. L. (2015). Technical Note: Testing an Improved Index for Analysing Storm Nutrient Hysteresis : Volume 12, Issue 8 (13/08/2015). Retrieved from

Description: School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK. Analysis of hydrochemical behaviour in extreme flow 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 datasets for discharge and nutrient parameters. A number of these analyses involve the use of an index to describe the characteristics of a hysteresis loop in order to compare different 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 parameters and catchments.

Technical Note: Testing an improved index for analysing storm nutrient hysteresis

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