Seasonal Distribution of Suspended Particulate Matter off China’s Subei Coast
Zhaojun Song1, 2, Jianping Li1, Fanxue Meng1, Wenjia Tang1, Xingyu Yuan1
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1Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth
Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, P.R. China
2Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology,
Qingdao, Shandong 266071, P.R. China
Submission date: 2017-03-27
Final revision date: 2017-06-14
Acceptance date: 2017-07-11
Online publication date: 2018-01-08
Publication date: 2018-01-26
Pol. J. Environ. Stud. 2018;27(2):845–852
In this study, the spatial distribution and seasonal changes of suspended particulate matter (SPM) concentrations near radial sand ridge areas off China’s Subei Coast are addressed, based upon field measurements conducted during spring and autumn. The results show that the SPM concentrations have higher values in spring than in autumn, and that higher concentrations of SPM occur in the near-bottom layer in both seasons; also, the nearshore areas have higher concentrations of SPM than offshore. In addition, a robust linear relationship was established between the SPM concentrations (mgL-1) and in situ remote sensing reflectance (Rrs) (R2 = 0.944, n = 39), and then the concentrations of SPM are retrieved from the satellite images, which have a good corresponding relationship with in situ SPM concentrations. There are significant differences between SPM concentrations in spring and those in autumn. The SPM in the study area is mainly derived from the resuspension of the seabed sediments in the radial sand ridges (abandoned Huanghe-Changjiang River multiple delta).