QGIS Shoreline Change Analysis Tool (QSCAT): A fast, open-source shoreline change analysis plugin for QGIS

Coastal erosion poses a significant threat to most coastal communities. This necessitates a better understanding of coastal erosion dynamics, and thus, shoreline change analysis (SCA) tools would be handy. However, many available tools require commercial softwares and/or a faster computing platform....

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Published inEnvironmental modelling & software : with environment data news Vol. 184; p. 106263
Main Authors Facun, Louis Philippe, Sta Maria, Ma. Yvainne, Ducao, Rodel, Clemente, Jamela Jirah, Carmelo, Ellen Mae, Maon, Angelo, Malaya, Ara Rivina, Cuison, Floribeth, Siringan, Fernando
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.01.2025
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Online AccessGet full text
ISSN1364-8152
DOI10.1016/j.envsoft.2024.106263

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Abstract Coastal erosion poses a significant threat to most coastal communities. This necessitates a better understanding of coastal erosion dynamics, and thus, shoreline change analysis (SCA) tools would be handy. However, many available tools require commercial softwares and/or a faster computing platform. To address these issues, QGIS’ Shoreline Change Analysis Tool (QSCAT), a new QGIS plugin built with Python, was developed. QSCAT can perform transect-based and area-based analyses. The transect-based algorithm of QSCAT was patterned after the Digital Shoreline Analysis System (DSAS). Whereas, the area-based algorithm is similar to the change polygon method. Running QSCAT and DSAS together demonstrated that QSCAT generated the same results as DSAS but its overall speed is 8 times faster than DSAS. QSCAT can estimate beach area loss and length of eroding shorelines, which can identify erosion hotspots. These features attest to QSCAT’s potential as a more efficient and an equally reliable SCA tool. •For SCA, QSCAT is an equally reliable but relatively faster alternative to DSAS.•QSCAT can perform both transect-based and area-based analyses.•Development as a QGIS plugin enhances accessibility and adoption of QSCAT.
AbstractList Coastal erosion poses a significant threat to most coastal communities. This necessitates a better understanding of coastal erosion dynamics, and thus, shoreline change analysis (SCA) tools would be handy. However, many available tools require commercial softwares and/or a faster computing platform. To address these issues, QGIS’ Shoreline Change Analysis Tool (QSCAT), a new QGIS plugin built with Python, was developed. QSCAT can perform transect-based and area-based analyses. The transect-based algorithm of QSCAT was patterned after the Digital Shoreline Analysis System (DSAS). Whereas, the area-based algorithm is similar to the change polygon method. Running QSCAT and DSAS together demonstrated that QSCAT generated the same results as DSAS but its overall speed is 8 times faster than DSAS. QSCAT can estimate beach area loss and length of eroding shorelines, which can identify erosion hotspots. These features attest to QSCAT’s potential as a more efficient and an equally reliable SCA tool. •For SCA, QSCAT is an equally reliable but relatively faster alternative to DSAS.•QSCAT can perform both transect-based and area-based analyses.•Development as a QGIS plugin enhances accessibility and adoption of QSCAT.
ArticleNumber 106263
Author Cuison, Floribeth
Siringan, Fernando
Facun, Louis Philippe
Malaya, Ara Rivina
Sta Maria, Ma. Yvainne
Ducao, Rodel
Carmelo, Ellen Mae
Clemente, Jamela Jirah
Maon, Angelo
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Shoreline change analysis
Coastal erosion
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Snippet Coastal erosion poses a significant threat to most coastal communities. This necessitates a better understanding of coastal erosion dynamics, and thus,...
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StartPage 106263
SubjectTerms Coastal erosion
Geographic information systems
Open-source software
Shoreline change analysis
Title QGIS Shoreline Change Analysis Tool (QSCAT): A fast, open-source shoreline change analysis plugin for QGIS
URI https://dx.doi.org/10.1016/j.envsoft.2024.106263
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