Open AccessRemote Sensing of Spatial-Temporal Distribution of Suspended Sediment Concentrationin East Dongting Lake, China
Author(s) -
Mingwu Ou,
Xi Chen,
Junjie Zhou,
Ying Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/668/1/012030
Subject(s) - sediment , channel (broadcasting) , hydrology (agriculture) , yangtze river , flood myth , environmental science , spatial distribution , china , physical geography , geology , geography , remote sensing , geomorphology , geotechnical engineering , engineering , archaeology , electrical engineering
Three Landsat 8 OLI scenes acquired from 2016 to 2017 were used to estimate the suspended sediment concentration (SSC) in East Dongting Lake, China. The results show that SSC in East Dongting Lake is generally low, only the SSC of sediment transport channel connecting South Dongting Lake is significantly high, and that in the west of the lake is relatively small. From 2016 to 2017, the average SSC in the eastern channel was33-120 mg/L, the average SSC in the north branch of the west area was15-43 mg/L, and the average SSC in the south branchof the west area was17-46 mg/L. Under the influence of the dilute water of the Yangtze River in flood season, the overall SSC in the lake area is lower than that in non-flood season, and the average SSCis within 40 mg/L. The variation law of SSC in lake area revealed by remote sensing is consistent with the measured data, which verifies the feasibility of this method and provides a new perspective for dynamic tracking and mastering the distribution law and variation trend of suspended sediment in East Dongting Lake.