Reconstructing the Past, Present and Future of Sandbar Change by remote satellite sensing and UAV Aerial Photography
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          Considering the issue of sustainable ecology, attention has been paid to the problem of widespread use of modern engineering to solve environmental problems, resulting in insufficient sand resources in sandbanks and the reduction of lagoon ecosystem areas. This not only affects the volume of the lagoon itself, but also the ecological environment and industrial aquaculture. As a result, a team led by professor Shih-Chun Hsiao and deputy director Wen-son Chiang of the Tainan Hydraulics Laboratory has been developing strategies of human and environmental adaptation to the changes of sandbanks. Their team is applying hydrological simulation in conjunction with aerial photographs of landform and topography, taken by Professor Jiann-yeou Rau of geomatics, and using the water quality analysis technique of associate professor Chih-hua Chang of environmental engineering for: 1) evaluating how to reduce the groin effect by simulating scenarios; 2) developing UAV photogrammetry for 3D modeling to monitor sandbar changes; and 3) using multispectral and water quality monitoring instruments to analyze changes in salinity following a rainstorm.