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- Title
Residual hydrodynamic fields after tsunami generation by an earthquake.
- Authors
Nosov, M.; Nurislamova, G.; Moshenceva, A.; Kolesov, S.
- Abstract
The linear theory of long waves was applied to study horizontal motions of the water layer in a rotating ocean which appear after tsunami generation by an earthquake. The structures of residual potential and eddy fields are analyzed on the basis of the analytical solution of a model axisymmetric problem for an ocean of constant depth. The estimates of the horizontal displacements of water particles, velocity of the eddy current, and energy of the geostrophic eddy are calculated for typical conditions of the tsunami source. Particular features of the residual fields related to the existence of stable stratification are considered. Static and dynamic numerical models are described that allow us to calculate the residual potential field and its evolution related to the realistic events. The field of residual horizontal displacements of water particles for the catastrophic earthquake near the coasts of Japan on March 11, 2011, is calculated and analyzed.
- Subjects
HYDRODYNAMICS; TSUNAMIS; EARTHQUAKES; GEOSTROPHIC currents; MATHEMATICAL models
- Publication
Izvestiya, Atmospheric & Oceanic Physics, 2014, Vol 50, Issue 5, p520
- ISSN
0001-4338
- Publication type
Article
- DOI
10.1134/S0001433814050077