De-pigmented particles play an important role in determining the optical properties of seawater in coastal oceans. Using the data collected at about 1,355 stations offshore of China, variations in the spectral absorption of de-pigmented particles at 440 nm (ad (440)) and their spectral slope (S ad) were investigated. Higher values of a ad (440) were observed in enclosed or semi-enclosed bay waters and estuarine waters. The contribution of de-pigmented particles to total seawater absorption at 440 nm shows the similar distribution with that of a ad (440). Except for weak negative correlations in two study areas, there is no obvious relationship between ad(440) and Sd in most parts of our study areas.
ZHOU Hong-li
,
ZHU Jian-hua
,
LI Tong-ji
,
WANG Xiao-yong
. Optical properties of de-pigmented particles offshore of China[J]. Journal of Tropical Oceanography, 2012
, 31(6)
: 57
-61
.
DOI: 10.11978/j.issn.1009-5470.2012.06.009
[1] 希夫林 K C. 海洋和大气光学[M]. 李武, 张欣梅, 译. 青岛: 青岛海洋大学出版社, 1991: 4?5.
[2] BOWERS D G, HARKER G E L, STEPHAN B．Absorption spectra of inorganic particles in the Irish Sea and their relevance to remote sensing of chlorophyll[J]．Int J Remote Sens, 1996, 17(12): 2449?2460．
[3] KRATZER S, BOWERS D G, TETT P B．Seasonal changes in colour ratios and optically active constituents in the optical Case-2 waters of the Menai Strait, North Wales[J]．Int J Remote Sens, 2000, 21(11): 2225?2246．
[4] BRICAUD A, STRAMSKI D．Spectral absorption coefficients of living phytoplankton and non-algal biogenous matter: A comparison between the Peru upwelling area and Sargasso Sea[J]．Limnol Oceanogr, 1990, 35: 562?582.
[5] BABIN M, STRAMSKI D, FERRARI G M, et al. Variations in the light absorption coefficients of phytoplankton, nonalgal particles and dissolved organic matter in coastal waters around Europe[J]. J Geophys Res, 2003, 108: 3211?3231.
[6] 朱建华. 黄东海非色素颗粒与非色素颗粒物的吸收系数光谱模型研究[J]. 海洋技术, 2004, 23(2): 7?13.
[7] 周虹丽, 韩冰, 李铜基, 等．南黄海和珠江口海区非色素颗粒物光谱吸收特性[J]．海洋技术, 2007, 26(3): 114 ?117.
[8] 王桂芬, 曹文熙, 许大志, 等．南海北部海区非藻类颗粒物吸收系数的变化特性[J]. 海洋技术, 2007, 26(1): 45?59.
[9] 许晓强, 曹文熙, 杨跃忠．珠江口颗粒物吸收系数与盐度及叶绿素a浓度的关系[J]. 热带海洋学报, 2004, 23(5): 63?71.
[10] 邢小罡, 赵冬至, 刘玉光, 等．渤海非色素颗粒物和黄色物质的吸收特性研究．海洋环境科学, 2008, 27(6): 595?598.
[11] 国家海洋局908专项办公室. 我国近海海洋光学调查技术规程. 北京: 海洋出版社, 2006: 11?16.
[12] BABIN M, STRAMSKI D. Light absorption by aquatic particles in the near-infrared spectral region[J]. Limnol Oceanogr, 2002. 47(3): 911?915.
[13] NELSON J R, GUARDA S. Particulate and dissolved spectral absorption on the continental shelf of the southeastern United States[J]. J Geophys Res, 1995, 100(C5): 8715?8732.
[14] ASTORECAL R, RUDDICK K, ROUSSEAUL V, et al.Variability of the inherent and apparent optical properties in a highly turbid coastal area: Impact on the calibration of remote sensing algorithms[J]. EARSeL e Proceedings 2006, 5(1): 1?17.
[15] BABIN M, STRAMSKI D, FERRCAR G M, et a1．Variations in the mass—specific absorption coeficients of mineral particles, suspended in the water[J]．Limnol Oceanogr, 2004, 49(3): 756?767．
