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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.8
- 수록면
- 515 - 521 (9page)
이용수
초록· 키워드
오류제보하기
Nowadays, due to various pollution sources, it is essential for environmental scientists to monitor water quality. Phytoplanktons form the end of the food chain in water bodies and are one of the most important biological indicators in water pollution studies. Chlorophyll-A, a green pigment, is found in all phytoplankton. Chlorophyll-A concentration indicates phytoplankton biomass directly. Therefore, Chlorophyll-A is an indirect indicator of pollutants, including phosphorus and nitrogen, and their refinement and control are important. The present study, Moderate Resolution Imaging Spectroradiometer (MODIS) satellite images were used to estimate the chlorophyll-A concentration in southern coastal waters in the Caspian Sea. For this purpose, Multi-layer perceptron neural networks (NNs) were applied which contained three and four feed-forward layers. The best three-layer NN has 15 neurons in its hidden layer and the best four-layer one has 5 in each. The three- and four- layer networks both resulted in similar root mean square errors (RMSE), 0.1(㎍/ℓ), however, the four-layer NNs proved superior in terms of R² and also required less training data. Accordingly, a four-layer feed-forward NN with 5 neurons in each hidden layer, is the best network structure for estimating Chlorophyll-A concentration in the southern coastal waters of the Caspian Sea.
목차
ABSTRACT
1. Introduction
2. Data
3. Method
4. Results and Discussion
5. Concluding Remarks
References
참고문헌 (21)
참고문헌 신청
Jensen JR. Remote sensing of the environment: An earth resource perspective. 2nd ed. Univ. of South Carolina: Pearson Prentice Hall; 2007. p. 409-440.
Tang D, Kawamura H, Lee M, Dien TV. Seasonal and Spatial Distribution of Chlorophyll a Concentrations and Water Conditions in the Gulf of Tonkin, South China Sea. Remote Sens. Environ. 2003;85:475-483.
Gregg WW, Casey NW. Global and regional evaluation of the seaWiFS Chlorophyll data set. Remote Sens. Environ. 2004;93:463-479
Pinkerton MH, Richardson KM, Boyd PW, et al. Intercomparison of ocean colour band-ratio algorithms for Chlorophyll concentration in the subtropical front East of New Zealand. Remote Sens. Environ. 2005;97:382-402.
Allan MG, Hamilton DP, Hicks BJ, Brabyn L. Landsat remote sensing of chlorophyll a concentration in central North Island lakes of New Zealand. Int. J. Remote Sens. 2011;32:2037-2055.
Tang D, Kawamura H, Lee M, Dien TV. Seasonal and Spatial Distribution of Chlorophyll a Concentrations and Water Conditions in the Gulf of Tonkin, South China Sea. Remote Sens. Environ. 2003;85:475-483.
Gregg WW, Casey NW. Global and regional evaluation of the seaWiFS Chlorophyll data set. Remote Sens. Environ. 2004;93:463-479
Pinkerton MH, Richardson KM, Boyd PW, et al. Intercomparison of ocean colour band-ratio algorithms for Chlorophyll concentration in the subtropical front East of New Zealand. Remote Sens. Environ. 2005;97:382-402.
Allan MG, Hamilton DP, Hicks BJ, Brabyn L. Landsat remote sensing of chlorophyll a concentration in central North Island lakes of New Zealand. Int. J. Remote Sens. 2011;32:2037-2055.
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UCI(KEPA) : I410-ECN-0101-2020-539-000378814