Effects of Material Nonuniformity in Earthquake Faulting

地震断层中物质不均匀性的影响

• 批准号: 9614357
• 负责人: Leon Keer
• 金额: $ 13.79万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-03-15 至 2000-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614357&HistoricalAwards=false
• 关键词: Effects; Material; Nonuniformity; Earthquake; Faulting

9614357 Kerr This research involves the development of models for estimating the effects of material variations on the mechanics of earthquake faulting. The objective is to identify characteristics of surface deformations for distinguishing between homogeneous and nonuniform models in order to understand deformation sources at depth in areas where field observations indicate spatial variations in material properties. 3-D analytical and numerical techniques will be developed for calculating elastic fields in nonuniform material to investigate how subsurface variations in elastic moduli influence fault mechanics. Use of these models in simulations of fault behavior will provide more realistic calculations of the slip induced elastic fields, such as the change of the stress state that a slip zone imposes on itself and nearby faults. This research is a component of the National Earthquake Hazard Reduction Program. ***

小行星9614357 这项研究涉及的模型的发展，估计地震断层力学的材料变化的影响。 其目的是识别表面变形的特征，以区分均匀和不均匀的模型，以了解变形源在现场观测表明材料特性的空间变化的地区的深度。 三维分析和数值技术将被开发用于计算非均匀材料中的弹性场，以研究弹性模量的地下变化如何影响断层力学。 在断层行为的模拟中使用这些模型将提供对滑动引起的弹性场的更真实的计算，例如滑动带施加在其自身和附近断层上的应力状态的变化。 这项研究是国家地震减灾计划的一个组成部分。 ***