A synthetic study to evaluate the utility of hydrological signatures for calibrating a base flow separation filter

CH Su; TJ Peterson; JF Costelloe; AW Western

Journal article

A synthetic study to evaluate the utility of hydrological signatures for calibrating a base flow separation filter

CH Su, TJ Peterson, JF Costelloe, AW Western

Water Resources Research | AMER GEOPHYSICAL UNION | Published : 2016

DOI: 10.1002/2015WR018177

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Abstract

Estimation of base flow from streamflow hydrographs has been a major challenge in hydrology for decades, leading to developments of base flow separation filters. When without tracer or groundwater data to calibrate the filters, the standard approach to apply these filters in practice involves some degrees of subjectivity in choosing the filter parameters. This paper investigates the use of signature-based calibration in implementing base flow filtering by testing seven possible hydrological signatures of base flow against modeled daily base flow produced by Li et al. (2014) for a range of synthetic catchments simulated with HydroGeoSphere. Our evaluation demonstrates that such a calibration ..

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University of Melbourne Researchers

Andrew Western Author

Related Projects (1)

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Grants

Awarded by Australian Research Council (ARC)

Funding Acknowledgements

The HGS streamflow and base flow simulation data are available online as the supporting information to Li et al. [2014]; last accessed on 30 April 2016 via http://www.sciencedirect.com/science/article/pii/S1364815213003149. The rainfall and PET data were provided by L. Li through personal communication in 2016. We thank L. Li and H. Maier for their assistance with the data, and four anonymous reviewers and the associate editor for their valuable comments on the original manuscript. CHS thank Shelly Chua for valuable discussions. This research was conducted with financial support from the Australian Research Council (ARC Discovery Project DP120100253).