Spectral absorption by marine particles of coastal waters of Baja California1
Spectral absorption by marine particles of coastal waters of Baja California1
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DOI：
10.4319/lo.1982.27.3.0492
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发表时间：
1982-05
影响因子：
4.5
通讯作者：
D. Kiefer;J. Soohoo
中科院分区：
文献类型：
--
作者：
D. Kiefer;J. Soohoo
1979 年 3 月，通过简单设计的分光光度计测量含有颗粒的滤光器的漫透射率，确定了下加利福尼亚州沿海水域悬浮颗粒的光谱吸收率。 20 个站的上层水域的吸收率相差一个数量级以上，但光谱形状基本相似，表明浮游植物色素是主要吸收体。在 400 至 435 nm 之间发现了一个主要光谱变化区域，其中最大吸收率向较短波长的变化与相对于叶绿素的脱色素浓度增加相关。对数据进行多变量分析，得出含有叶绿素的颗粒和含有脱镁色素的颗粒的比吸收率（以 m2·mg 颜料−1 为单位）的两个光谱。将含叶绿素颗粒的比吸收率与之前在现场和实验室的测量值进行比较；之前尚未测量过含脱色素颗粒的比吸收率。
During March 1979 spectral absorptance for the suspended particles of the coastal waters of Baja California was determined by measuring the diffuse transmittance of filters containing the particles with a simply designed spectrophotometer. The absorptance for the upper water of 20 stations varied by over an order of magnitude, but the spectra were generally similar in shape and indicated that phytoplankton pigments were the dominant absorbers. A region of major spectral change was found between 400 and 435 nm, where a shift in maximal absorptance toward shorter wavelengths was correlated with increased concentrations of pheopigments relative to chlorophyll. A multivariate analysis of the data yielded two spectra for the specific absorptance in units of m2·mg pigment−1 of those particles containing chlorophyll and those containing pheopigments. The specific absorptance for chlorophyll-containing particles is compared with previous measurements in the field and laboratory; the specific absorptance for pheopigment-containing particles has not been measured before.