| As a pollutant tracer, total suspended matter (TSM) is extremely important for studying the spread and distribution of terrigenous pollution. In this paper, the TSM retrieval algorithm for the GOCI is developed based on the in-situ TSM concentration and remote sensing reflectance spectra in the Bohai Sea from 2008 to 2017. However, Qinhuangdao area should be treated differently. The algorithm is applied to the GOCI eight phase images on September 13, 2015, to obtain the spatial distribution of TSM. Additionally, the TSM coefficient of variation is analyzed during eight phase. The results show that most regions of the Bohai Sea have low concentration of TSM (0-10mg/L), and small coefficient of variation; the high value of TSM mainly located in the coastal areas of Bohai Bay and Laizhou Bay (up to 300mg/L) centered on the Yellow River Delta, and the variation of these areas is large (over 60mg/L, up to 200mg/L) during eight phase. The concentration of TSM in Liaohe Estuary, Fuzhou Bay and Jinzhou Bay is relatively high, and the variation range of TSM in some areas of Jinzhou Bay is relatively high in short period, which may be related to intensive human activities such as reclamation. |
