Summary
The aim of the master thesis is (i) to assess the possibilities of stereophotogrammetrical methods used in geomorphology and (ii) to create a set of 3D models. It focuses on particular river Morava banks, which are in some parts quite unstable because of ongoing lateral water erosion.
The theoretical part of the thesis lead to the specification of the types of geomorphological tasks, which can be processed using stereophotogrammetrical methods and to the assessment of the task precision.
The practical part included the choice of the particular meanders used for the observation (Štěpánov, Mohelnice, Moravičany), geodetical measurements around them and, mainly, taking stereo pictures of them. The stereopairs were used to the extraction of the 3D points, which later entered the process of interpolation to get the precise digital terrain models.
The meander near Štěpánov was observed twice – in autumn 2011 and in spring 2012, in order to the possibility of being compared. Finally it was found out, that the meander changed its borders from 1 to 3 meters, depending on its part. The precision of the results is said to be around 20 cm – due to the geodetical measurements, triangulation and interpolation methods.
Meanders near Moravičany and Mohelnice were observed just once, so it is not possible to determine the change of mass during the winter time.
There are many possibilities how to develop the research – to continue observing the meanders, to use different geodetical methods or to study the changing meanders in a context with the surrounded protected natural area.