Spatiotemporal dynamics of suspended particulate matter in the Yellow River Estuary, China during the past two decades based on time-series Landsat and Sentinel-2 data

Peng Li; Yinghai Ke; Junhong Bai; Shuangyue Zhang; Mengmeng Chen; Demin Zhou

doi:10.1016/j.marpolbul.2019.110518

Spatiotemporal dynamics of suspended particulate matter in the Yellow River Estuary, China during the past two decades based on time-series Landsat and Sentinel-2 data

Mar Pollut Bull. 2019 Dec:149:110518. doi: 10.1016/j.marpolbul.2019.110518. Epub 2019 Aug 16.

Authors

Peng Li¹, Yinghai Ke², Junhong Bai³, Shuangyue Zhang⁴, Mengmeng Chen⁴, Demin Zhou⁴

Affiliations

¹ Laboratory Cultivation Base of Environment Process and Digital Simulation, Capital Normal University, Beijing 100048, China.
² Laboratory Cultivation Base of Environment Process and Digital Simulation, Capital Normal University, Beijing 100048, China. Electronic address: yke@cnu.edu.cn.
³ State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China.
⁴ Laboratory Cultivation Base of Environment Process and Digital Simulation, Capital Normal University, Beijing 100048, China; College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China.

PMID: 31425840
DOI: 10.1016/j.marpolbul.2019.110518

Abstract

Twenty-two years of suspended particulate matter (SPM) concentrations in the Yellow River estuary and adjacent sea, China were derived from 532 Landsat and Sentinel 2A/B satellite images. Optimal SPM retrieval model was selected by comparing five state-of-art models using 79 in-situ datasets and recalibrated to ensure consistency among multiple-sensor-derived SPM concentrations. SPM in the estuary, in South Bohai Bay, and Laizhou Bay exhibited distinct temporal variations. 73% and 52% of the interannual and monthly SPM variations near the river mouth were explained by riverine water and sediment discharge, showing impact of the operation of the Xiaolangdi Reservoir and Water-Sediment Regulation Scheme. Land area accretion and erosion in river delta are associated with SPM variation. Riverine impacts on SPM rapidly declined off-shore because of the rapid deposition of the coarse-grain sediment. Ocean current and wind-wave forces explained high concentrations and intra-annual variations of SPM in the South Bohai Bay and Laizhou Bay.

Keywords: Landsat satellite; River input; SPM; Sentinel-2 satellite; Yellow River Estuary.

MeSH terms

China
Environmental Monitoring / methods
Estuaries
Geologic Sediments / analysis*
Interrupted Time Series Analysis
Particulate Matter / analysis*
Rivers
Satellite Imagery
Spatio-Temporal Analysis

Substances

Particulate Matter