Coastline changes in Veneto Region (Italy) from 2012 to 2018 by means of multitemporal orthophotos

Coastline, which represents the boundary between land and the water surface, has a very dynamic nature. As a matter of fact, coastlines are continuously changing in shape and position due to both natural and anthropogenic causes. Change of coastline has great importance, therefore it is needed to detect this variations and take precautions. In this study, in order to detect the coastline changes of the Veneto Region, multitemporal orthophotos from the years 2012, 2015 and 2018 were used and the restitution of the ground-sea transition was performed. Coastline change analysis related to these years is provided with the help of QGIS software. QGIS is a Geographical Information System application that supports viewing, editing and analysis of geospatial data. The software made it possible to calculate this change both with distances (between two coastlines drawn from multitemporal orthophotos) and with areas. The comparison between years 2012, 2015 and 2018 coastlines made it possible to observe which zones are subjected to deposit and which to erosion and establish possible trends and velocities of deformations.