2018 Volume 30 Issue 4 Pages 89-100
ABSTRACT：Low-lying areas are most vulnerable to sea-level rises and disasters due to future climate change. In order to evaluate the actual inundation area, accurate and consistent elevation data and maps of dike positions in coastal areas are required. However, no such database is currently available on a global scale. The present paper proposes a method for generating a global dike distribution map using satellite images and digital surface models. To evaluate the effectiveness of this method, case studies were carried on coastal areas in Japan and Vietnam. The results indicated that an accuracy of 70-80% could be obtained in regions where topographic features were easy to identify.
