The Yongding New River flows into the Bohai Bay, which is an important area in the construction of Circum-Bohai Sea Economic Zone. The migration law and influencing factors of suspended sediment concentration (SSC) are the core issues of the estuary research. Remote sensing inversion can realize the dynamic, continuous and synchronous observation of a large area of water and quickly obtain the spatiotemporal distribution of suspended sediment. In this study, Sentinel-2 MSI data from 2017 to 2021 were used to invert SSC in the study area. Based on these data, spatio-temporal changes of the SSC in different seasons and their induced factors were analyzed. The results show that the SSC in the study area has obvious temporal and spatial distribution rules, which is higher in spring and summer, and lower in autumn and winter. The SSC gradually increases from the river to the sea, while perpendicular to the river, the SSC gradually decreases from south to north. The difference of temporal and spatial distribution of SSC may be mainly caused by river freshwater, wind speed and direction, terrain and human activities.
[1]
Quinten Vanhellemont,et al.
Adaptation of the dark spectrum fitting atmospheric correction for aquatic applications of the Landsat and Sentinel-2 archives
,
2019,
Remote Sensing of Environment.
[2]
B. Nechad,et al.
Calibration and validation of a generic multisensor algorithm for mapping of total suspended matter in turbid waters
,
2010
.
[3]
J. Syvitski,et al.
Impact of Humans on the Flux of Terrestrial Sediment to the Global Coastal Ocean
,
2005,
Science.
[4]
Y. Lv,et al.
Study on Water quality Monitoring Method of Jialing River based on Sentinel-2 MSI Sensor Data
,
2021
.
[5]
Chenxu Ji.
ESTUARINE AND COASTAL ENVIRONMENT CHANGES AND RESOURCE SUSTAINABLE UTILIZATION
,
2002
.