Baseflow Separation Using the Digital Filter Method: Review and Sensitivity Analysis Article Swipe

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Taeuk Kang , Sangho Lee , Namjoo Lee , Youngkyu Jin ·

YOU? · · 2022 · Open Access · · DOI: https://doi.org/10.3390/w14030485

The baseflow separation method based on a digital filter is a simple method for separating the baseflow from streamflow. Appropriate estimation of filter parameters is required to use the digital filter method for analysis. We carried out sensitivity analysis on four digital filter methods: Lyne–Hollick (LH), Chapman, Chapman and Maxwell (CM), and exponentially weighted moving average (EWMA). Furthermore, appropriate filter parameters were suggested for each method in this study. By applying them to 25 stage stations in the Nakdong River in the Republic of Korea, the four methods were evaluated. The results of the evaluation showed that the Chapman and CM methods had problems separating the baseflow during the dry seasons. The EWMA and LH methods were able to achieve reliable baseflow separation of the outcomes by selecting appropriate the filter parameters. Thus, the EWMA and LH methods can be used easily and reasonably among the digital filter methods that have one filter parameter.

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Computer Science

Statistics

Mathematics

Environmental Science

Process (Computing)

Engineering

Geography

Electronic Engineering

Drainage Basin

Cartography

Computer Vision

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EWMA chart Baseflow Filter (signal processing) Sensitivity (control systems) Digital filter Computer science Statistics Mathematics Environmental science Streamflow Process (computing) Engineering Geography Electronic engineering Drainage basin Operating system Cartography Control chart Computer vision

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Type: article
Language: en
Landing Page: https://doi.org/10.3390/w14030485
PDF: https://www.mdpi.com/2073-4441/14/3/485/pdf?version=1644236667
OA Status: gold
Cited By: 38
References: 26
Related Works: 10
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DOI: https://doi.org/10.3390/w14030485

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Title: Baseflow Separation Using the Digital Filter Method: Review and Sensitivity Analysis

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Language: en

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Publication year: 2022

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Publication date: 2022-02-07

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Authors: Taeuk Kang, Sangho Lee, Namjoo Lee, Youngkyu Jin

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Landing page: https://doi.org/10.3390/w14030485

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Concepts: EWMA chart, Baseflow, Filter (signal processing), Sensitivity (control systems), Digital filter, Computer science, Statistics, Mathematics, Environmental science, Streamflow, Process (computing), Engineering, Geography, Electronic engineering, Drainage basin, Operating system, Cartography, Control chart, Computer vision

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Cited by: 38

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