Monitoring multidecadal coastline change and reconstructing tidal flat topography

Tsai, Ya-Lun; Tseng, Kuo Hsin

doi:10.1016/j.jag.2023.103260

Cited by 4 publications

(2 citation statements)

References 54 publications

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“…When the shoreline exhibits motion, the intertidal topography changes accordingly; therefore, identifying the highly dynamic shore and masking it are critical to ensuring the accuracy of the constructed intertidal DEM [38]. The landward side of the study area mask for each time period was identified using the high-tide line, and the seaward side was harmonised to approximate the furthest boundary of the low-tide line of the tidal flats.…”

Section: Inversion Of Tidal Flat Topographymentioning

confidence: 99%

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Inversion of Tidal Flat Topography Based on the Optimised Inundation Frequency Method—A Case Study of Intertidal Zone in Haizhou Bay, China

Ma,

Wang,

Zhou

et al. 2024

Remote Sensing

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Coastal tidal flat wetlands are valuable natural resources that provide diverse habitats and important ecological barriers. The physical environment of the intertidal zone poses many challenges to the monitoring of tidal flat topography, making it difficult to implement traditional measurement methods, and satellite remote sensing combined with tide level information makes it possible to invert coastal tidal flat topography more conveniently over large areas. Current methods based on inundation frequency fail to consider the effect of water level distribution of remote sensing images, and usually use all available remote sensing images. However, the uneven distribution of image tide levels will increase the error of the tidal flat construction. Therefore, in this study, according to the distribution characteristics of the water level in remote sensing images, we adaptively exclude the images with a concentrated water level distribution, so as to make the water level distribution more uniform, and thus reduce the topographic inversion error. The validation results of the inversion accuracy show that the root mean squared error of the tidal flat topographic inversion improved by about 5 cm compared with the previous inundation frequency method, which is suitable for reconstructing the tidal flat topography on a large scale and a long-time scale, and it can be used as a basis for coastal tidal flat protection and restoration decision making.

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Section: Inversion Of Tidal Flat Topographymentioning

confidence: 99%

“…accuracy of the constructed intertidal DEM [38]. The landward side of the study area mask for each time period was identified using the high-tide line, and the seaward side was harmonised to approximate the furthest boundary of the low-tide line of the tidal flats.…”

Section: Tidal Flat Terrain Construction Processmentioning

confidence: 99%