复杂地震台网群落结构的动态演化
Dynamical evolution of the community structure of complex earthquake network
摘要：
地震台网具有无标度性、小世界性、层次性和混合性等特点。本文从群落结构的角度分析了地震台网在主震前后的时间演化。研究发现，表征群落存在性的模块性测度的最大值表现出一种特殊的行为：在主震前，其最大值保持在一个较大的值，在主震时，其最大值突然下降到一个较小的值，然后相对缓慢地增加并再次松弛到一个较大的值。因此，一个主震吸收和合并社区，创造一个更大的社区，显示如何主震可以在复杂的网络表示地震活动的特点。
英文摘要：
Earthquake network is known to be complex in the sense that it is scale-free, small-world, hierarchically organized and assortatively mixed. Here, the time evolution of earthquake network is analyzed around main shocks in the context of the community structure. It is found that the maximum of the modularity measure quantifying existence of communities exhibits a peculiar behavior: its maximum value stays at a large value before a main shock, suddenly drops to a small value at the main shock, and then increases to relax to a large value again relatively slowly. Thus, a main shock absorbs and merges communities to create a larger community, showing how a main shock can be characterized in the complex-network representation of seismicity.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
