Keywords
geoinformation technologies, scanning, tls, 3d model
Start Date
1-7-2012 12:00 AM
Abstract
The aim of this study was to present the capabilities of using geoinformation technologies in the process of outlining meandering section of the river.Development of valley plain rivers landscape is connected with occurrence of old river beds, which came into existence because of natural changing of river-bed (meandering) or man interference in water system (Glińska-Lewczuk et al. 2010). Survey results from terrestrial laser scanning (TLS) combined with hydrologic data can be successfully used to determine area, borders and duration of overflow of the old river beds. It is a complex problem which requires operations with large data sets. These actions include determination of the appropriate means of execution, data integration and conducting calculations and analyses (Gotlib et al. 2007).In this study terrestrial laser scanning was used for monitoring of meandering section of the Drweca River. Measurements took place in two specific times of the year: in May 2011 (spring thaw) and in October 2011 (after draught in summer time). Obtained point clouds became a basis for differential models, which were used for monitoring. They also enable to determine the rate of the changes in river beds and to observe changes in meanders. Authors claim that terrestrial laser scanning is a good alternative for a river monitoring, although it has limitations.
Geoinformation technologies in the identification of meandering section of the river
The aim of this study was to present the capabilities of using geoinformation technologies in the process of outlining meandering section of the river.Development of valley plain rivers landscape is connected with occurrence of old river beds, which came into existence because of natural changing of river-bed (meandering) or man interference in water system (Glińska-Lewczuk et al. 2010). Survey results from terrestrial laser scanning (TLS) combined with hydrologic data can be successfully used to determine area, borders and duration of overflow of the old river beds. It is a complex problem which requires operations with large data sets. These actions include determination of the appropriate means of execution, data integration and conducting calculations and analyses (Gotlib et al. 2007).In this study terrestrial laser scanning was used for monitoring of meandering section of the Drweca River. Measurements took place in two specific times of the year: in May 2011 (spring thaw) and in October 2011 (after draught in summer time). Obtained point clouds became a basis for differential models, which were used for monitoring. They also enable to determine the rate of the changes in river beds and to observe changes in meanders. Authors claim that terrestrial laser scanning is a good alternative for a river monitoring, although it has limitations.
