"What Controls Earthquake Size and Occurrence? II"

“什么控制地震的规模和发生？II”

• 批准号: 9019003
• 负责人: Larry Ruff
• 金额: $ 14.29万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-06-01 至 1994-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9019003&HistoricalAwards=false
• 关键词: What; Controls; Earthquake; Size; Occurrence

This research is proposed as an Accomplishment Based Renewal based on the strength of the past research of the proposer. Future work will continue to concentrate on the factors that control a major earthquake's size, location, and timing. Using plate tectonics as a framework, measurements will be made of the depth extent and geometry of the seismogenic zone, i.e., that portion of the plate interface capable of generating large earthquakes. The methodology developed to perform this measurement is innovatively flexible and powerful with rigorous statistical error estimates. Measurements will also concentrate on the "inside" part of the earthquake where spatial heterogeneity in coupling strength along the fault controls many features of seismicity and earthquake rupture processes. This research is a component of the National Earthquake Hazard Reduction Program.

本研究是在总结前人研究成果的基础上提出的基于成就的更新方法。未来的工作将继续集中在控制大地震的大小、位置和时间的因素上。以板块构造为框架，将测量孕震带的深度、范围和几何形状，即板块界面上能够发生大地震的那部分。为执行这一测量而开发的方法具有创新的灵活性和强大的功能，并具有严格的统计误差估计。测量还将集中在地震的“内部”部分，在那里，沿断层耦合强度的空间不均一性控制着地震活动和地震破裂过程的许多特征。这项研究是国家减少地震灾害计划的一部分。