Review on Characteristics and Applicability of Digital Filter Baseflow Separation Methods Article Swipe

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YOU? · · 2022 · Open Access · · DOI: https://doi.org/10.9798/kosham.2022.22.3.195

Baseflow separation method based on the digital filter is a technique for separating the baseflow from the total streamflow, and appropriate estimation of the filter parameter is required for analysis. In this study, we reviewed the analysis characteristics of the four baseflow separation methods (Lyne-Hollick, Chapman, Eckhardt, and EWMA (exponentially weighted moving average)) based on the digital filter according to the change in the filter parameter and evaluated their applicability. Each digital filter method was applied to Daeri and Cheonsong stage stations, which have measurement records for five consecutive years for tributaries located of the Nakdonggang River in the Republic of Korea. The Chapman method had an error in the baseflow separation during the dry season. The EWMA method was not appropriately analyzed within the parameter range used in previous studies. The Lyne-Hollick and Eckhardt methods provided appropriate results within the exploring range of the filter parameter. However, in the Eckhardt method, we had to be careful in determining the filter parameter because the variation in analysis results was relatively large according to the parameter change.

Related Topics

Range (Aeronautics)

Statistics

Computer Science

Environmental Science

Aerospace Engineering

Concepts

Baseflow EWMA chart Filter (signal processing) Range (aeronautics) Separation (statistics) Streamflow Statistics Computer science Environmental science Mathematics Process (computing) Engineering Drainage basin Geography Computer vision Cartography Operating system Control chart Aerospace engineering

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Type: article
Language: en
Landing Page: https://doi.org/10.9798/kosham.2022.22.3.195
PDF: http://www.j-kosham.or.kr/upload/pdf/KOSHAM-2022-22-3-195.pdf
OA Status: diamond
Cited By: 2
References: 14
Related Works: 10
OpenAlex ID: https://openalex.org/W4293251646

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OpenAlex ID: https://openalex.org/W4293251646

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DOI: https://doi.org/10.9798/kosham.2022.22.3.195

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Title: Review on Characteristics and Applicability of Digital Filter Baseflow Separation Methods

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Type: article

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Language: en

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Publication year: 2022

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Publication date: 2022-06-28

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Authors: Taeuk Kang, Namjoo Lee

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Landing page: https://doi.org/10.9798/kosham.2022.22.3.195

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Concepts: Baseflow, EWMA chart, Filter (signal processing), Range (aeronautics), Separation (statistics), Streamflow, Statistics, Computer science, Environmental science, Mathematics, Process (computing), Engineering, Drainage basin, Geography, Computer vision, Cartography, Operating system, Control chart, Aerospace engineering

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Cited by: 2

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corresponding_institution_ids	https://openalex.org/I118722661, https://openalex.org/I8991828
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