Monitoring Coastal Chlorophyll-a Concentrations in Coastal Areas Using Machine Learning Models
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Title
- Monitoring Coastal Chlorophyll-a Concentrations in Coastal Areas Using Machine Learning Models
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Author(s)
- Kwon, Yong Sung; Baek, Seung Ho; Lim, Young Kyun; Pyo, JongCheol; Ligaray, Mayzonee; Park, Yongeun; Cho, Kyung Hwa
- KIOST Author(s)
- Baek, Seung Ho(백승호); Lim, Young Kyun(임영균)
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Alternative Author(s)
- 백승호; 임영균
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Publication Year
- 2018-08
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Abstract
- Harmful algal blooms have negatively affected the aquaculture industry and aquatic ecosystems globally. Remote sensing using satellite sensor systems has been applied on large spatial scales with high temporal resolutions for effective monitoring of harmful algal blooms in coastal waters. However, oceanic color satellites have limitations, such as low spatial resolution of sensor systems and the optical complexity of coastal waters. In this study, bands 1 to 4, obtained from Landsat-8 Operational Land Imager satellite images, were used to evaluate the performance of empirical ocean chlorophyll algorithms using machine learning techniques. Artificial neural network and support vector machine techniques were used to develop an optimal chlorophyll-a model. Four-band, four-band-ratio, and mixed reflectance datasets were tested to select the appropriate input dataset for estimating chlorophyll-a concentration using the two machine learning models. While the ocean chlorophyll algorithm application on Landsat-8 Operational Land Imager showed relatively low performance, the machine learning methods showed improved performance during both the training and validation steps. The artificial neural network and support vector machine demonstrated a similar level of prediction accuracy. Overall, the support vector machine showed slightly superior performance to that of the artificial neural network during the validation step. This study provides practical information about effective monitoring systems for coastal algal blooms.
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ISSN
- 2073-4441
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/861
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DOI
- 10.3390/w10081020
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Bibliographic Citation
- WATER, v.10, no.8, 2018
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Publisher
- MDPI
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Subject
- HARMFUL ALGAL BLOOMS; ARTIFICIAL NEURAL-NETWORK; WATER-QUALITY PARAMETERS; RED TIDES; COCHLODINIUM-POLYKRIKOIDES; ECOLOGICAL ROLES; SATELLITE DATA; INLAND WATERS; KOREA; PREDICTION
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Keywords
- harmful algal blooms; remote sensing; Landsat-8 Operational Land Imager; machine learning
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Type
- Article
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Language
- English
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Document Type
- Article
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