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- Title
Nonlinear dynamics of level variations in the Caspian Sea.
- Authors
Kozhevnikova, I.; Shveikina, V.
- Abstract
Caspian Sea level variations, which have several equilibrium states, are studied by the methods of the theory of nonlinear dynamic systems. Normal monthly values of sea level according to data collected at Makhachkala gauge from 1900 to 2000 are considered. The diagnostic characteristics of dynamic chaos are used to show that sea level variations have some properties of series with chaotic behavior. A model of level variations in the Caspian Sea, comprising a system of water balance equations for the sea basin, the dynamics of river runoff, and water balance of the sea itself, is proposed. Equation of a nonlinear oscillator is derived and shown to have solutions with chaotic regimes at some combinations of parameters.
- Subjects
CASPIAN Sea; MAKHACHKALA (Russia); RUSSIA; SEA level; WATER levels; STABILITY (Mechanics); FLUID dynamics; LIQUID-liquid equilibrium; COMBINATORICS
- Publication
Water Resources, 2008, Vol 35, Issue 3, p297
- ISSN
0097-8078
- Publication type
Article
- DOI
10.1134/S0097807808030056