Dynamics of the River Channel Deformations along the Latitudinal Section of the Middle Reaches of the Ob River

Abstract

The paper describes the dynamics of stream erosion of the right bank of the Ob river in the Nizhnevartovsk area in the Khanty-Mansi Autonomous Okrug – Yugra. Furthermore, it presents an analysis of fifteen-year monitoring of the river channel deformations at the Ust-Vakh observation station using field-established benchmarks through interpretation of diachronous satellite images and registration of the riverbank line using the satellite positioning. The paper presents a comparison of methods and indicates their positive and negative aspects. The obtained survey results are required for the development of integrated engineering efforts to protect river banks at populated localities as part of the targeted program “Transfer of people from residential houses located in the floodplain zone exposed to erosion”. These surveys allow to accurately predict the dynamics of stream erosion of the river banks along the latitudinal section of the middle reaches of the Ob river, where various floodplain types are formed, banks are unprotected, islands occur in the river channel, and the floodplain is dissected by a braided river channel.