Radar imaging of shallow water bathymetry: A case study in the Yangtze Estuary
- East China Normal Univ., Shanghai (China). State Key Lab. of Estuarine and Coastal Research; Nansen Environmental and Remote Sensing Center, Bergen (Norway)
- Nansen Environmental and Remote Sensing Center, Bergen (Norway)
- Russian State Hydrometeorological Univ., St. Petersburg (Russia). Satellite Oceanography Laboratory (SOLab); Marine Hydrophysical Institute, Sebastopol (Russia). Remote Sensing Dept.
- East China Normal Univ., Shanghai (China). State Key Lab. of Estuarine and Coastal Research
This study focuses on 2-dimensional (2-D) radar imaging of bathymetric features in the shallow water of the Yangtze Estuary using synthetic aperture radar (SAR) observations and model simulations. A validated 2-D shallow water numerical model simulates the barotropic current velocity, and the simulated current fields together with the relevant parameters of radar observations are then invoked in the radar imaging model as the input. The results show that variations in the simulated image intensity are mainly dominated by distinct radar backscatter anomalies caused by wave-current interactions in the vicinity of rapidly changing underwater topographies. The comparison between the simulated and observed SAR images shows a reasonable agreement, demonstrating that our approach may be implemented to monitor changes in the shallow water bathymetry of the Yangtze Estuary in the future.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1461429
- Journal Information:
- Journal of Geophysical Research. Oceans, Vol. 121, Issue 12; ISSN 2169-9275
- Publisher:
- American Geophysical UnionCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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