Abstract
In recent years, the Red River Delta has suffered from coastal erosion due mainly to human activities. To determine the characteristics of coastal erosion, a coastal dynamic index was calculated by overlapping eight JERS-1 SAR (Synthetic Aperture Rader) images from 1994 to 1998. After combining the features of natural environment and land use, 74 meshes covering 500 m along the coastline were classified by cluster analysis of UPGMA (unweighted pair-group method using arithmetic averages) using the three major factors, i.e., costal dynamics index, banks, and land elevation. A coastal erosion risk map was produced by clustering 686 meshes, including the inland area. The coastline clusters and distance from the sea were used in the clustering. Finally, a vulnerability map of coastal erosion considering land use was constructed. The present land use was assessed by randomization of land use, and it became clear that the current land use was vulnerable to coastal erosion. This study indicates that when other information is not available, satellite data can be very useful for coastal erosion risk mapping.
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Murooka, M., Kuwahara, Y., Haruyama, S. (2015). Mapping Coastal Erosion Risk in the Southern Red River Delta, Vietnam. In: Li, J., Yang, X. (eds) Monitoring and Modeling of Global Changes: A Geomatics Perspective. Springer Remote Sensing/Photogrammetry. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-9813-6_10
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DOI: https://doi.org/10.1007/978-94-017-9813-6_10
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