Universal fluctuation of polygonal crack geometry in solidified lava
Universal fluctuation of polygonal crack geometry in solidified lava
复制标题
凝固熔岩中多边形裂纹几何形状的普遍涨落
DOI：
10.1103/physreve.104.025009
复制
发表时间：
2021
影响因子：
2.4
通讯作者：
Shima Hiroyuki
中科院分区：
文献类型：
--
作者：
Akiba Yuri;Takashima Aika;Shima Hiroyuki
由凝固熔岩流形成的柱状节理露头常被半有序多边形裂隙所覆盖。每个露头的多边形直径相当一致，但它们的形状在边数和内角上变化很大。在这里，我们揭示了多边形形状的统计变化遵循极值分布类：Gumbel分布。Gumbel法被发现持有不同的柱状关节，无论地点，岩性组成，和典型的直径。一个共同的分布柱状接头意味着一个通用的类，可以整合多边形裂纹网络上观察到的各种断裂脆性材料的表面。
Outcrops of columnar joints made of solidified lava flows are often covered by semiordered polygonal cracks. The polygon diameters are fairly uniform at each outcrop, but their shapes largely vary in the number of sides and internal angles. Herein, we unveil that the statistical variation in the polygon shape follows an extreme value distribution class: the Gumbel distribution. The Gumbel law was found to hold for different columnar joints, regardless of the locality, lithologic composition, and typical diameter. A common distribution for columnar joints implies a universal class that may integrate the polygonal crack networks observed on the surface of various fractured brittle materials.