10:00 〜 10:15
[HTT14-05] Spatial-temporal dynamics of hydrological features for Red River Delta assessed by earth observations
キーワード：Red River Basin, Hydrogeology, Earth observation
The Red River Delta of Vietnam has been significantly developed following the Hanoi Master Plan Implementation 2030 vision to 2050 of the central government of country in recent years. The development can be obviously seen from the many apartment projects and expanded transportation networks over the satellite cities in the Delta. As a result, the natural space in the Red River Delta and features along the river bank have been greatly modified. Documentation of hydrological features that can be realized by the earth observations serves as an important informatic base for the master plan to exploit natural resources and environmental protection. In this study, we use Landsat data to extract the hydrological properties and other variables of interest from remote sensing data for further use in the hydrological assessment model. In addition, the long-term satellite data are used to quantify the spatial change in hydrological landscape of the Red River Delta in the past decades. Results show that there exist significant changes in the hydrological element of the Red River Delta under the rapid development of anthropogenic process in particular a vast increase in built-up land and development of golf course land. The findings of this work provide useful information for the authorities to understand the spatiotemporal changes possibly associated with the master plan and to design strategic plans for the sustainable development of the Red River Basin.