Mechanics and Scaling of the Critical Slip Distance for Seismic Faulting

地震断层临界滑移距离的力学和尺度

• 批准号: 9316082
• 负责人: Chris Marone
• 金额: $ 25.37万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-03-01 至 1997-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9316082&HistoricalAwards=false
• 关键词: Mechanics; Scaling; Critical; Slip; Distance

9316082 Marone The PI will perform experiments to determine the critical slip distance, which plays a key role in determining the rupture nucleation dimension, the magnitude of the precursive moment release, and the maximum seismic ground acceleration. He will measure this parameter for a wider range of materials, normal stresses, and slip rates than previous studies, will investigate in detail the frictional behavior and constitutive parameters for shear within fractally-rough surfaces, and will systematically model the data collected. In this way, he will develop an understanding of the underlying mechanics and physical processes, and investigate how these mechanics and processes relate to those operative in natural fault zones. ****

9316082马龙PI将进行实验，以确定临界滑动距离，该距离在确定破裂成核尺寸、前兆时刻释放的幅度和最大地震地面加速度方面起着关键作用。与以前的研究相比，他将在更广泛的材料、法向应力和滑移率范围内测量这一参数，将详细研究分形粗糙表面内剪切的摩擦行为和本构参数，并将对收集的数据进行系统建模。通过这种方式，他将发展对潜在机制和物理过程的理解，并调查这些机制和过程如何与在天然断裂带中起作用的那些机制和过程相关。****