Persistent self-organization of sandpiles.
Persistent self-organization of sandpiles.
复制标题
沙堆的持续自组织。
DOI：
10.1103/physreve.47.1401
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Kelley
中科院分区：
文献类型：
--
作者：
Rosendahl;Vekic;Kelley
我们研究了由不同大小的真实沙堆的逐粒静止扰动引起的雪崩波动。与以前的报道相反，我们发现自组织的属性，即雪崩大小的幂规律分布，是与系统大小无关的一般行为。然而，随着系统尺寸的增加，幂定律行为被均匀大的周期性雪崩所补充，这些雪崩带走了总雪崩质量的主要部分。此外，我们还发现，桩质量波动的尺度不变性依赖于桩与颗粒直径之比。
We have studied the avalanche fluctuations resulting from the grain-by-grain quiescent perturbation of real sandpiles of various sizes. Contrary to previous reports, we find the attribute of self-organization, namely, a power-law distribution of avalanche sizes, to be the generic behavior, independent of system size. However, as the system size is increased, the power-law behavior is supplemented by uniformly large, periodic avalanches that carry away the dominant fraction of the total avalanched mass. Additionally, we find that a scale invariance in pile-mass fluctuations depends on the ratio of pile to grain diameters.