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Channeling of branched flow in weakly scattering anisotropic media

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Metzger,  Jakob J.
Department of Nonlinear Dynamics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Fleischmann,  Ragnar
Department of Nonlinear Dynamics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Degueldre, H., Metzger, J. J., Schultheis, E., & Fleischmann, R. (2017). Channeling of branched flow in weakly scattering anisotropic media. Physical Review Letters, 118(2): 024301. doi:10.1103/PhysRevLett.118.024301.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-581A-9
Abstract
When waves propagate through weakly scattering but correlated, disordered environments they are randomly focused into pronounced branchlike structures, a phenomenon referred to as branched flow, which has been studied in a wide range of isotropic random media. In many natural environments, however, the fluctuations of the random medium typically show pronounced anisotropies. A prominent example is the focusing of tsunami waves by the anisotropic structure of the ocean floor topography. We study the influence of anisotropy on such natural focusing events and find a strong and nonintuitive dependence on the propagation angle which we explain by semiclassical theory.