INDICATORS OF ASYMMETRY OF BENDS AND MEANDERS
https://doi.org/10.71367/3034-4638-2025-2-3-42-56
Abstract
The question of the parameters characterizing the asymmetry of bends and meanders deserves special consideration, since most bends and meanders have obviously asymmetrical plan forms, and this fact has been noted by many researchers. In addition, the asymmetry indices of bends (meanders) are included in a number of expressions used to approximate the plan forms of the channel centerline. This paper discusses some indicators used as asymmetry indices of bends, specifies the parameters included in the formulas determining these indices, and compares them from the standpoint of the completeness of the description of the asymmetry of river bends (meanders) and the convenience of use in analyzing the planimetry of meandering channels.
About the Author
V. I. Zamyshlyaev
FSBI «State Hydrological Institute»
Russian Federation
Russian Federation
Zamyshlyaev Vitaly Ivanovich, Candidate of technical sciences (PhD), Researcher at the Department of Channel Processes
199004, St. Petersburg, Vasilyevsky Island, 2nd line, 23
References
1. Abad, J.D. Cfd simulations of asymmetric kinoshita-generated meandering bends // The XXXI International Association of Hydraulic Engineering and Research (IAHR) Congress / September 11–16, Seoul, Korea, 2005. 10 p.
2. Carson, M.A., Lapointe, M.F. The inherent asymmetry of river meander planform // Journal of Geology, 91(1), 1983. P. 41–55.
3. Chalov R.S., Zavadsky A.S., Panin A.V. River meanders. [Scientific editor Chalov, R.S.] Moscow University Press, 2004. 371 p. (In Russ.)
4. Fargue, L. La forme du lit des rivières à fond mobile, Paris: Gauthier-Villars. 1908.
5. Gendel’man, M.M. On the forms of river meanders // Collection of works on hydrology, No. 17, 1982. P. 197–207. (In Russ.)
6. Ielpi A., Lapôtre M.G.A., Finotello A., Ghinassi M. Planform-asymmetry and backwater effects on river-cutoff kinematics and clustering // Earth Surface Processes and Landforms. Vol. 46, Iss 2. 2021. P. 357–370. https://doi.org/10.1002/esp.5029
7. Kinoshita, R. Investigation of channel deformation in Ishi-kari River // Dep. Sci. and Tech., Bur. of Resour., Tech. Rep. 13, Tokyo, Japan. 1961. 174 p.
8. Kondrat’ev N.E. Hydromorphological basis of calculations of free meandering. Tr. GGI [Proceedings of the State Hydrological Institute], 1968, iss. 155, P. 5–38. (In Russ.)
9. Langbein, W.B., Leopold L.B. River meanders—Theory of minimum variance, U.S. Geol. Surv. Prof. Pap., 422H, 1966. P. 1–19.
10. Lelyavsky S.N. Introduction to river hydraulics. – L.: Gidrometeoizdat, 1961. 233 p. (In Russ.)
11. Limaye, A.B. A geometric algorithm to identify river meander bends: 2. Test for characteristic shapes. Journal of Geophysical Research: Earth Surface,130, e2024JF007909. 2025. https://doi.org/10.1029/2024JF007909
12. Lopez Dubon, S., Sgarabotto, A., Lanzoni, S. A curvature-based framework for automated classification of meander bends // Water Resources Research, 61, 2025. https://doi.org/10.1029/2024WR037583
13. Savitsky V.A. On the asymmetry of river bends // Geomorfologiya. 1995. No. 3. P. 73-79. (In Russ.)
14. Von Schelling, H. Most frequent particle paths in a plane // Am. Geophys. Union Trans., Vol. 32, 1951, P. 222–226.
15. Von Schelling, H. Most frequent random walks // Gen. Elec. Co. Rept. 64GL92, Schenectady, N.Y. 1964.
16. Zamyshlyaev V.I. Mathematical modeling of plan re-formations of meandering rivers channels. Diss... kand. texn. nauk. 1982. 184 p. (In Russ.)
17. Zamyshlyaev V.I. Mathematical model of plan deformation of river channels // Tr. GGI [Proceedings of the State Hydrological Institute], 1983, iss. 288, P. 56–72. (In Russ.)
18. Zamyshlyaev V.I. “Meander” and “bend” as morphological units of planimetry of a meandering channel: an analysis of existing concepts // E’roziya pochv i ruslovy’e processy (in print). 2025 (In Russ.)
Review
For citations:
Zamyshlyaev V.I. INDICATORS OF ASYMMETRY OF BENDS AND MEANDERS. Eroziya pochv i ruslovye processy. 2025;(3):42-56. (In Russ.) https://doi.org/10.71367/3034-4638-2025-2-3-42-56
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