Dissipation regimes for short wind waves

Zero-dissipation limit for nonlinear waves

Evolution équations featuring nonlmeanty, dispersion and dissipation are considered hère For classes of such équations that mclude the Korteweg-de Vries-Burgers équation and the BBMBurgers équation, the zero dissipation limit is studied Uniform bounds independent of the dissipation coefficient are denved and zero dissipation limit results with optimal convergence rates are established Mathemati...

Numerical Simulations of Water Waves’ Modulational Instability Under the Action of Wind and Dissipation

Does direct impact of SST on short wind waves matter for scatterometry?

[1] Scatterometer radar backscatter depends on the relationship linking surface stress and surface roughness. SST can alter the growth rate of centimeter-scale waves through its impact on air and water density and water viscosity. This SST-dependency has not been included in the standard Geophysical Model Functions. This study uses a radar imaging model to evaluate this SST-dependence and compa...

Modeling of Finite Depth Wind Wave Dissipation

The objectives are to establish a description of the “white-capping” dissipation both as a spectral function and a function of environmental conditions. To date, knowledge of the spectral distribution of energy losses due to wave breaking is so poor that scientific debate continues on whether, in the spectral sense, low-frequency dissipation exists or not. Also there is little knowledge of the ...

Dissipation-Scale Turbulence in the Solar Wind

We present a cascade model for turbulence in weakly collisional plasmas that follows the nonlinear cascade of energy from the large scales of driving in the MHD regime to the small scales of the kinetic Alfvén wave regime where the turbulence is dissipated by kinetic processes. Steady-state solutions of the model for the slow solar wind yield three conclusions: (1) beyond the observed break in ...