Combined Multi-beam Echo Sounder and Acoustic Doppler Profiler Mapping of the Danube-Epurasu Branch in Order to Determine the Influence of Newly Constructed Hydrotehnical Structures

This article details field research conducted at the Epurasu branch of the Danube River that sought to investigate the influence of newly constructed hydrotehnical structures. The study area was surveyed with two vessels, aiming to investigate the morphology and flow field characterizing this secondary branch and to provide data in order to observe the state of the riverbed and bedforms, velocity, and possible morphologic changes. The first vessel was equipped with a multibeam echosounder and on the second one an acoustic doppler current profiler (ADCP) was used. The results of the research revealed changes in the riverbed morphology and highly detailed imagery of the riverbed and of the hydrotehnical works