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タイトル: Mini-review: Assessment of size distribution of suspended particles in coastal and estuarine environments usin in situ instruments
著者: KOIKE, Isao
FUKUDA, Hideki
キーワード: Particulate organic matter (POM)
Marine snow
Settling particles
LISST-100
Optical particle sizing technique
Laser diffraction
Light scattering
Material cycle
発行日: 2007年6月25日
出版者: International Coastal Research Center, Ocean Research Institute, the University of Tokyo
掲載誌情報: Coastal marine science. Vol.31 No.1, 2007.6, pp. 1-8
抄録: Size distribution of suspended particles is crucial to understand their dynamics in coastal and estuary environments, since size of particles is one of the key factors controlling behavior of particle in water column, including coagulation/disaggregation processes and sinking rates from upper waters. Although the size distribution has been measured widely by electric resistance method using a coulter counter after sample water collection, fragile nature of large sized suspended particles, such as aggregates or flocs, hindered evaluation of in situ particle size distribution. Application of optical technique to measure in situ distribution of marine particles (2.500mm), therefore, has been developed, i.e., small-forward angle scattering of lease beam with interaction of marine particles which follows the Mie theory. Among the instruments based on the above principle, commercially available LISST-100 has been widely used for the studies of sediment transportation near the bottom, dynamics of phytoplankton, and dynamics of suspended particles in the upper ocean. In this review, several examples of LISST-100 applications to coastal waters are introduced, together with some methodological problems associated with types and compositions of suspended particles. For the future studies of suspended particles dynamics in the field, information of structural and biochemical characteristics of marine particles is also crucial in addition to in situ assessment of their size distribution.
URI: http://hdl.handle.net/2261/20975
ISSN: 13493000
出現カテゴリ:Coastal Marine Science
Coastal Marine Science

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