Estimating the Frictional Strength of the Crust Using Earthquake Focal Mechanism Data

利用地震震源机制数据估算地壳的摩擦强度

• 批准号: 8916813
• 负责人: Richard Allmendinger
• 金额: $ 4.99万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-01 至 1991-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8916813&HistoricalAwards=false
• 关键词: Estimating; Frictional; Strength; Crust; Using

This research is a continuation of the work of the investigators that deduces the state and direction of stress in the earth's crust from the orientation of the slip vectors of earthquakes. The formalism of the solution has been extended and the present work includes a universal (pseudo) friction coefficient so that some idea of the frictional resistance of the crust to faulting can be deduced. This technique will be applied to data sets from a variety of tectonic environments, including both plate boundary and intraplate settings, and spanning a range of source depths. This research has direct application to the National Earthquake Hazard Reduction Program.

这项研究是调查人员的工作的延续，该工作从地震的滑动向量的方向推论了地壳中压力的状态和方向。 该解决方案的形式主义已扩展，目前的工作包括通用（伪）摩擦系数，以便可以推断出对外壳对断层的摩擦抗性的某些想法。 该技术将应用于来自各种构造环境的数据集，包括板界和板内设置，以及跨越一系列源深度。 这项研究直接应用于国家地震危险计划。