An Observational Numerical and Analog Study of Faulting Caused by Bending at Subduction Zones

俯冲带弯曲引起的断层观测数值模拟研究

• 批准号: 0137293
• 负责人: Roger Buck
• 金额: $ 22.05万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-03-01 至 2006-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0137293&HistoricalAwards=false
• 关键词: Observational; Numerical; Analog; Study; Faulting

Lithospheric bending may give a fundamentally different window into the processes of fault initiation and development than does lithospheric stretching . The investigators will take advantage of this window by a systematic analysis of bathymetric data and sidescan sonar images for all trenches where data is available. Trenches offer a unique way to relate falut characteristics to the amount of strain required to develop a system of faults. Two-dimensional numerical models will be used to relate lithospheric properties to the observed spacing of faults and the amplitude of their offset.

与岩石圈拉伸相比，岩石圈弯曲可能提供了一个根本不同的窗口来了解断层的形成和发展过程。 调查人员将利用这一机会，系统分析所有有数据的海沟的测深数据和侧扫声纳图像。 海沟提供了一种将断层特征与形成断层系统所需的应变量联系起来的独特方法。 将使用二维数值模型将岩石圈特性与观测到的断层间距及其偏移幅度联系起来。