Analysis of the historical trend of the right bank of Prut river in the territorial administrative unit of Prisacani, Iasi county using the digital shoreline analysis system (DSAS) software

Abstract

The planimetric position of the river banks is a main parameter in detecting the areas affected by erosion and sediment deposition, but also for studying the morph dynamics of the river bed. In order to measure, quantify, calculate and monitor the statistics of the modification rate of the shore line, many researchers have used the software Digital Shoreline Analysis System (DSAS) which works as an extension of the software Environmental System Research Institute (ESRI) ArcGIS and which is using for this kind of statistics the multiple lines of the shore recorded at different dates in time and obtained from different sources. Taking into account that the DSAS software uses polyline layers as a representation of a certain shoreline at a certain time, we have used the polylines which represent the geographical position in time of the right bank of the river Prut. The resulted statistics are the following: Net Shoreline Movment (NSM), Shoreline Change Envelope (SCE), End Point Rate (EPR) and Linear Regression Rate (LRR). This provides a thorough analysis of the change in time of the right bank of the river Prut, but cannot establish the force of the morpho dynamics of the river bed.