期刊
REMOTE SENSING
卷 13, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/rs13101940
关键词
Yellow River Delta; coastline extraction; optical remote sensing; Synthetic Aperture Radar; spatiotemporal changes; water discharge; sediment load; human activities
类别
资金
- Natural Science Foundation of China [41806108]
- National Key Research and Development Program of China [2017YFE0133500, 2016YFA0600903]
- Open Research Fund of State Key Laboratory of Estuarine and Coastal Research from East China Normal University [SKLEC-KF202002]
- State Key Laboratory of Geodesy and Earth's Dynamics from Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences [SKLGED2021-5-2]
- European Space Agency through the ESA-MOST DRAGON-5 Project [59339]
This study combined optical and Synthetic Aperture Radar (SAR) satellite remote sensing images to analyze the spatiotemporal changes of the Yellow River Delta coastline from 1980 to 2020, demonstrating the significant impact of sediment discharge on coastline changes.
The integration of multi-source, multi-temporal, multi-band optical, and radar remote sensing images to accurately detect, extract, and monitor the long-term dynamic change of coastline is critical for a better understanding of how the coastal environment responds to climate change and human activities. In this study, we present a combination method to produce the spatiotemporal changes of the coastline in the Yellow River Delta (YRD) in 1980-2020 with both optical and Synthetic Aperture Radar (SAR) satellite remote sensing images. According to the measurement results of GPS RTK, this method can obtain a high accuracy of shoreline extraction, with an observation error of 71.4% within one pixel of the image. Then, the influence of annual water discharge and sediment load on the changes of the coastline is investigated. The results show that there are two significant accretion areas in the Qing 8 and Qingshuigou course. The relative high correlation illustrates that the sediment discharge has a great contribution to the change of estuary area. Human activities, climate change, and sea level rise that affect waves and storm surges are also important drivers of coastal morphology to be investigated in the future, in addition to the sediment transport.
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