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RISS 인기검색어
- 검색키워드
- 저자 : Juanita Sandidge (검색결과 2 건)
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Measuring and Modeling the Spectral Attenuation of Light in the Yellow Sea
Sonia C.Gallegos,안유환,Juanita Sandidge,Xiaogang Chen,Sangbok, D. Hahn,Rodolfo Iturriaga,Hee Dong Jeong,Young Sang Suh,Sunghwam Cho 한국해양과학기술원 2004 Ocean science journal Vol.39 No.1
Spectral attenuation of light and upwelling radiance were measured in the western coast of Korea on board the R/V Inchon 888 of the Korean National Fisheries Research and Development Institute (NFRDI) during four seasons. The goal of these efforts was to determine the spatial and temporal distribution of the inherent and apparent optical properties of the water, and the factors that control their distribution. Our data indicate that while stratification of the water column, phytoplankton, and wind stress determined the vertical distribution of the optical parameters offshore, it was the tidal current and sediment type that controlled both the vertical and horizontal distribution in the coastal areas. These findings led to the development of a model that estimates the spectral attenuation of light with respect to depth and time for the Yellow Sea. The model integrates water leaving radiance from satellites, sediment types, current vectors, sigma-t, bathymetry, and in situ optical measurements in a learning algorithm capable of extracting optical properties with only knowledge of the environmental conditions of the Yellow Sea. The performance of the model decreases with increase in depth. The mean absolute percentage error (MAPE) of the model is 2% for the upper five meters, 8-10% between 6 and 50 meters, and 15% below 51 meters.
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Measuring and Modeling the Spectral Attenuation of Light in the Yellow Sea
Gallegos, Sonia-C.,Sandidge, Juanita,Chen, Xiaogang,Hahn, Sangbok-D.,Ahn, Yu-Hwan,Iturriaga, Rodolfo,Jeong, Hee-Dong,Suh, Young-Sang,Cho, Sung-Hwam The Korean Society of Oceanography 2004 Journal of the Korean Society of Oceanography Vol.39 No.1
Spectral attenuation of light and upwelling radiance were measured in the western coast of Korea on board the R/V Inchon 888 of the Korean National Fisheries Research and Development Institute(NFRDI) during four seasons. The goal of these efforts was to determine the spatial and temporal distribution of the inherent and apparent optical properties of the water, and the factors that control their distribution. Our data indicate that while stratification of the water column, phytoplankton, and wind stress determined the vertical distribution of the optical parameters offshore, it was the tidal current and sediment type that controlled both the vertical and horizontal distribution in the coastal areas. These findings led to the development of a model that estimates the spectral attenuation of light with respect to depth and time for the Yellow Sea. The model integrates water leaving radiance from satellites, sediment types, current vectors, sigma-t, bathymetry, and in situ optical measurements in a learning algorithm capable of extracting optical properties with only knowledge of the environmental conditions of the Yellow Sea. The performance of the model decreases with increase in depth. The mean absolute percentage error (MAPE) of the model is 2% for the upper five meters, 8-10% between 6 and 50 meters, and 15% below 51 meters.
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