08. AN APPLICATION OF DIGITAL SHORELINE ANALYSIS SYSTEM (DSAS) TO STUDY SHORELINE CHANGE ALONG KY ANH COASTS, HA TINH PROVINCE DURING 1989 - 2013

Tóm tắt

In the context of global climate change and sea level rise, studying shoreline change is aimed at not only formulating important engineering techniques but also dealing with challenges in muti-disciplinary data integration. This is valuable to many researchers, local government and local stakeholders. In order to identify the trend of changes, there are various effective models and systems that have been designed and developed. One of them is the Digital Shoreline Analysis System (DSAS) integrated in a geographical information system (GIS) developed by the USGS. The DSAS is applied for monitoring the shoreline changes in the district of Ky Anh, Ha Tinh province from 1989 to 2013. The research results consist of determining the shoreline positions during the study period based on using Landsat images; quantification of the erosion and accretion relationship between 1989 and 2013 in different topographical segments; and a map of affected areas where the shoreline is equal to the high-tide water line. The results updated by the internet would provide the decision makers, researchers and local communities with the benefits of monitoring shoreline change and help them to have quick responses to the abrupt change in the area.