Paleomeanders of the Belaya River (the Upper Angara region)
| Autor: | V. A. Golubtsov, N. V. Kichigina, M. Yu Opekunova |
|---|---|
| Rok vydání: | 2021 |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 629:012008 |
| ISSN: | 1755-1315 1755-1307 |
| Popis: | The article presents data on the existence of fragments of the ancient river network in the Belaya River valley (the Angara River basin). We characterize the modern floodplain-terrace complex of the Belaya River, namely the structure of modern floodplains and low terraces, the heights of their basement and morphology, as well as describe the structure of the ancient part of the Belaya River channel. The estimated fragment of the ancient valley of the Belaya River, with a length of 13.6 km, is a macro-bend. The morphometric parameters of the incised meanders of the ancient valley almost two times exceed the modern meanders of free type but are close in their morphometric parameters to modern incised meanders. Based on the morphometric parameters of fragments of the ancient river channel, we calculated the velocities of the paleo-Belaya and compared them with the actual values for the Belaya River. The calculated water flow rates of the ancient channel are 3.7 to 4.5 times higher than the modern parameters. However, these parameters are close to the maximum values during the summer floods. At the next stage of research, we plan to reconstruct the ancient river network of the area by analyzing basal surface maps. |
| Databáze: | OpenAIRE |
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