A Study of Earthquake Fault Shape and Slip Patterns

地震断层形状和滑动模式研究

• 批准号: 8720328
• 负责人: Steven Ward
• 金额: $ 10万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-03-01 至 1991-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8720328&HistoricalAwards=false
• 关键词: Study; Earthquake; Fault; Shape; Slip

We propose to continue our studies of earthquake fault behavior initiated two years ago. Our project interprets geodetic data from routinely monitored networks and special surveys near active earthquake fault regions. The goal of our project is to develop quantitative pictures of coseismic and postseismic strain accumulation and release. To do this we employ newly developed techniques which invert geodetic elevation changes, triangulation measurements and tide guage observations, to recover the location and intensity of slip on shallow earthquake faults. Our new mathematical tools for computing the surface deformation due to non-uniform slip on curved surfaces can reveal the distribution of coseismic slip and interseismic creep with detail far greater than previously possible. With extended funding, our program will continue to provide both theoretical foundations and practical rewards regarding the earthquake cycle and illuminate currently unresolved aspects of earthquake fault movements.

我们建议继续两年前开始的地震断层行为的研究。我们的项目解释来自地震活跃断裂带附近的常规监测网络和特殊调查的大地测量数据。我们项目的目标是开发同震和震后应变积累和释放的定量图像。为此，我们采用新开发的技术，反演大地高程变化、三角测量和潮汐仪观测，以恢复浅层地震断层的滑动位置和强度。我们新的计算曲面非均匀滑动引起的地表变形的数学工具可以比以前更详细地揭示同震滑动和地震间蠕变的分布。随着资金的扩大，我们的项目将继续提供有关地震周期的理论基础和实践奖励，并阐明目前尚未解决的地震断层运动方面。