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Published (Version of record)CC BY-NC V4.0, Open Access
Published (Version of record)CC BY-NC V4.0, Open
Journal article
Assessing the influence of zero-flow threshold choice for characterising intermittent stream hydrology
Hydrological processes, Vol.38(10), pp.1-9
01/10/2024
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Abstract
Zero-flow recordings in gauged streamflow data are critically important for intermittent stream research. Acknowledging the high uncertainty in zero-flow recordings, many studies pick a small number as zero-flow threshold, below which the flow is considered to be zero. The choice of zero-flow threshold is often arbitrary or unjustified, which leads us to wonder: would selecting a slightly different threshold change analysis result significantly? Here, we used a simple sensitivity analysis to assess how the choice of zero-flow threshold impacts the calculated values of relevant metrics to intermittent stream research. Results show that these metrics tended to be more sensitive to lower zero-flow thresholds, suggesting that even choosing a slightly different threshold could lead to meaningfully different results from the management perspective. This study highlights the need for reasonable justification of the choice of zero-flow threshold and concludes with potential ways to reduce uncertainty in zero-flow measurement.
Details
- Title
- Assessing the influence of zero-flow threshold choice for characterising intermittent stream hydrology
- Creators
- Songyan Yu - Griffith UniversityMargaret Shanafield - Flinders UniversityMark J. Kennard - Griffith University
- Publication Details
- Hydrological processes, Vol.38(10), pp.1-9
- Publisher
- Wiley
- Number of pages
- 9
- Grant note
- National Science Foundation; National Science Foundation (NSF) Griffith University, as part of the Wiley - Griffith University agreement via the Council of Australian University Librarians
- Identifiers
- 991013294053302368
- Copyright
- © 2024 The Author(s). Hydrological Processes published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article