Collaborative Research: failure of RockMasses from Nucleation and Growth of Microscopic Defects and Disorder

Klein, William¹ 

[1] Boston Univ., MA (United States)

关键词: Homogeneous nucleation;    heterogeneous nucleation;    fluctuations;    defects;    asperities;    Gutenburg-Richter scaling;    Omori's law;    aftershocks;   

DOI  :  10.2172/1323903
RP-ID  :  FG02--95ER14498
PID  :  OSTI ID: 1323903

学科分类：地球科学(综合)

美国|英语

来源: SciTech Connect

【 摘 要 】

Over the 21 years of funding we have pursued several projects related to earthquakes, damage and nucleation. We developed simple models of earthquake faults which we studied to understand Gutenburg-Richter scaling, foreshocks and aftershocks, the effect of spatial structure of the faults and its interaction with underlying self organization and phase transitions. In addition we studied the formation of amorphous solids via the glass transition. We have also studied nucleation with a particular concentration on transitions in systems with a spatial symmetry change. In addition we investigated the nucleation process in models that mimic rock masses. We obtained the structure of the droplet in both homogeneous and heterogeneous nucleation. We also investigated the effect of defects or asperities on the nucleation of failure in simple models of earthquake faults.