Articles | Volume 31, issue 9
https://doi.org/10.5194/angeo-31-1597-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/angeo-31-1597-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Regular paper
| 
27 Sep 2013
Regular paper |
| 27 Sep 2013
Changes in the ultra-low frequency wave field during the precursor phase to the Sichuan earthquake: DEMETER observations
S. N. Walker
ACSE, University of Sheffield, Sheffield, UK
V. Kadirkamanathan
ACSE, University of Sheffield, Sheffield, UK
O. A. Pokhotelov
Schmidt Institute of Physics of the Earth RAS, Moscow, Russia
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Short summary
Short summary
The interaction of waves can lead to inverse cascades, when energy is transferred from small scales to large ones. In dynamo theory, this corresponds to the alpha-effect, where turbulence generates large-scale magnetic field, in two-dimensional hydrodynamic turbulence transfer of kinetic energy from small scales to large ones is observed. We suggest simple analytical model that explains existence of inverse cascades of kinetic energy in rapidly rotating turbulence.
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