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Collision dynamics of two barchan dunes simulated by a simple model

Atsunari Katsuki·Hiraku Nishimori·Noritaka Endo·Keisuke Taniguchi
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Abstract

The collision processes of two crescentic dunes called barchans are systematically studied using a simple computer simulation model. The simulated processes, coalescence, ejection and reorganization, qualitatively correspond to those observed in a water tank experiment. Moreover we found the realized types of collision depend both on the mass ratio and on the lateral distance between barchans under initial conditions. A simple set of differential equations to describe the collision of one-dimensional (1D) dunes is introduced.

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Atsunari Katsuki, Hiraku Nishimori, Noritaka Endo, Keisuke Taniguchi. 2004-12-24. Collision dynamics of two barchan dunes simulated by a simple model. https://doi.org/10.1143/jpsj.74.538

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