摘要
悬浮颗粒物及粒径是水质重要参数,研究其分布特征有助于加深对海洋生态环境的了解。利用2013年6月和2013年11月LISST-100观测数据,研究了黄、渤海区域悬浮物粒径和浓度的分布情况,浓度分布整体上近岸高远岸低,粒径分布呈现近岸细远岸粗的特征,季节分布特征明显。通过典型断面分析发现,悬浮物粒径和浓度随着水深变化明显,连续站数据分析结果表明,大风对底层颗粒物的再悬浮作用显著,潮流对悬浮物的时空分布有着重要影响;水体衰减系数随着体积浓度变化明显。此外,还研究了悬浮颗粒物粒径Junge分布在黄、渤海区域的适用性。
The concentration and size of suspended particulate matter are important parameters of water quality because knowledge about the distribution characteristics of these two parameters can yield a better understanding of the marine ecological environment. In this study, we investigated the distributions of the concentration and size of suspended particulate matter in the Yellow and Bohai Seas based on in situ data collected during June and November 2013. The results reveal that the concentration decreased from coastal regions to offshore while the size increased, and both showed clear seasonal variations. In addition, the profile distributions of concentration and size showed obvious changes with depth. The analysis results of data measured at a continuous station suggest that the wind significantly influences the re-suspension of bottom particles and that tidal forcing affects the spatiotemporal distributions of particle concentration and size. The attenuation coefficient also significantly changes with the volume concentration of particles. We also examined the applicability of the Junge distribution model in the Yellow and Bohai Seas.
出处
《海洋科学》
CAS
CSCD
北大核心
2015年第12期91-99,共9页
Marine Sciences
基金
国家自然科学基金(41276186)
"全球变化与海气相互作用"专项资助(GASI03030101)
南京信息工程大学人才启动基金资助(2243141501007)
"江苏高校优势学科建设工程资助项目(PAPD)"资助
国家海洋公益性行业专项(201005030)
关键词
黄、渤海
悬浮物
粒径分布
体积浓度分布
LISST-100
Yellow Sea and Bohai Sea
suspended particle size
particle size distribution
volume concentration distribution
LISST-100 instrument
