Transient Creep in Peridotite with Application to

橄榄岩中的瞬态蠕变及其应用

• 批准号: 1620474
• 负责人: Reid Cooper
• 金额: $ 24.42万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1620474&HistoricalAwards=false
• 关键词: Transient; Creep; Peridotite; Application

A large earthquake imposes a sudden change of stress in the earth's mantle. Its post-earthquake deformation is observed by GPS at the earth's surface. This project is an experimental and theoretical investigation of the material behavior of the deep earth in response to large earthquakes. The results can be implemented in computer simulations for better understanding of the earthquake cycle and its role in the spatial and temporal distribution of the earthquake hazard.The material behavior of the earth's mantle when it is subjected to a sudden change of stress by a large earthquake will be examined through laboratory rock deformation experiments. The theoretical model extrapolates from the laboratory to the earth in numerical simulations. This research will enhance understanding of post-seismic relaxation and postglacial rebound. More generally it will enhance understanding of the earthquake cycle, one of the most important problems in geophysics. The research also has potential applications in materials science.

一场大地震施加了地球地幔突然变化的压力。 GPS在地球表面观察到其磨牙后变形。该项目是对大地震响应深地球的物质行为的实验和理论研究。 结果可以在计算机模拟中实现，以更好地理解地震周期及其在地震危害的空间和时间分布中的作用。当地球地幔的材料行为在通过实验室岩石变形实验中检查大地震突然变化时，地震突然改变了压力。理论模型通过数值模拟从实验室到地球推断。 这项研究将增强对后震后放松和冰川后反弹的理解。 通常，它将增强对地震周期的理解，这是地球物理学中最重要的问题之一。该研究还具有潜在的材料科学应用。