Shevchuk V. The methodology for monitoring riverbed processes by the aerospace imaging materials

In the dissertation paper presents an integrated approach for monitoring of the riverbed processes which can significantly improve the quality of information provision of the problem. This approach is based on usage data from aerospace imaging, cartographic materials, special maps (soils, geology, quaternary deposits), modern GIS technology and materials engineering and land surveying work. Actually such an integrated approach is applied for investigation of riverbed processes of areas of the rivers Dnister and Stryy in Carpathian region of Ukraine. Monitoring of landslides and rivers was performed for more than 30-year period. For determination of transmition characteristics of images taken from space aircraft Landsat 7 imaging system ETM+ we developed and implemented integrated method which permits us to take such factors as atmospheric influences, images shifts, defocusing effects and discrete structure of the sensor into account. The principle of synthesizing channels of multi-channel imaging system based on correlation between the spectral coefficients of objects was substantiated. To get maximum contrast between the water surface of the river and surrounding objects (vegetation, soils) an optimum channels were established. This technique can be used in the structural units of the Ministry of Emergency Situations, in design scientific-research institutes, hydraulic services, regional and district water management and other institutions of Ukraine, which practices works with construction of hydraulic structures and facilities, riverbank protection and regulation of riverbeds.