한국 연안에서 발생하는 유해 적조종 탐지를 위한 광학적 특성 연구

Title
한국 연안에서 발생하는 유해 적조종 탐지를 위한 광학적 특성 연구
Alternative Title
Optical discrimination among harmful algal bloom (HAB) species in Korean waters
Author(s)
김예슬; 유신재; 손영백
KIOST Author(s)
Kim, Yeseul(김예슬)Son, Young Baek(손영백)
Publication Year
2016-04-20
Abstract
Harmful algal blooms (HABs) have occurred around the coastal waters of Korean peninsula since late 1980s. Satellite remote sensing has been used to detect and monitor the temporal and spatial distributions of widespread HABs. To use satellite remote sensing more effectively in detecting HABs, we should be able to discriminate the remote sensing reflectance (Rrs) of HAB species from those of non-causative species. In this study, we analyzed the characteristics of absorption coefficients and simulated Rrs of the four dinoflagellate HAB species (Cochlodinium polykrikoides, Akashiwo sanguinea, Alexandrium tamarense and Scrippsiella trochoidea) which are among the major HAB species in Korean waters. We calculated the absorption coefficients (aph) of four HAB species using culture samples. The shapes and magnitudes of absorption spectra of the four dinoflagellate HAB species show clear differences at the visible wavelengths. Next, we used the HydroLight model (version 5.1 Mobley, 1995) to simulate the Rrs under dynamic optical conditions. For HydroLight simulations, we used the phytoplankton absorption coefficients measured from the cultures and absorption and backscattering coefficients of other optical constituents obtained from the synthetic database (IOCCG Report 5, 2006). In spite of the clear differences in absorption spectra of four species, the Rrs spectra of species simulated under the same conditions are indistite remote sensing more effectively in detecting HABs, we should be able to discriminate the remote sensing reflectance (Rrs) of HAB species from those of non-causative species. In this study, we analyzed the characteristics of absorption coefficients and simulated Rrs of the four dinoflagellate HAB species (Cochlodinium polykrikoides, Akashiwo sanguinea, Alexandrium tamarense and Scrippsiella trochoidea) which are among the major HAB species in Korean waters. We calculated the absorption coefficients (aph) of four HAB species using culture samples. The shapes and magnitudes of absorption spectra of the four dinoflagellate HAB species show clear differences at the visible wavelengths. Next, we used the HydroLight model (version 5.1 Mobley, 1995) to simulate the Rrs under dynamic optical conditions. For HydroLight simulations, we used the phytoplankton absorption coefficients measured from the cultures and absorption and backscattering coefficients of other optical constituents obtained from the synthetic database (IOCCG Report 5, 2006). In spite of the clear differences in absorption spectra of four species, the Rrs spectra of species simulated under the same conditions are indisti
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24891
Bibliographic Citation
International Symposium on Remote Sensing 2016, pp.157 - 160, 2016
Publisher
대한원격탐사학회
Type
Conference
Language
English
Publisher
대한원격탐사학회
Related Researcher
Research Interests

Ocean Color Remote Sensing,Climate Change,UAV,해양원격탐사,기후변화,무인체계

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