Dynamics Modeling of Discrete Faulting Processes at Mid-Ocean Ridges

大洋中脊离散断层过程的动力学模拟

• 批准号: 9012576
• 负责人: Jian Lin
• 金额: $ 12.01万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1993-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9012576&HistoricalAwards=false
• 关键词: Dynamics; Modeling; Discrete; Faulting; Processes

This is an investigation of the mechanics of ridge faulting. The Principal Investigators will develop lithospheric deformation models that explicitly consider faulting processes on a set of discrete faults. Three phases of the investigation are: (1) to examine the basic mechanics of a single normal fault under ridge tectonic stresses and subsequent lithospheric deformation, (2) to investigate the mechanical interaction among multiple faults in the crust and its effects on faulting patterns near a mid- ocean ridge, and (3) to apply the theoretical results from phase 1 and 2 to determine the characteristics of faulting in well surveyed areas of the Mid-Atlantic Ridge. The objectives of studying a multiply-faulted system are to test the hypothesis that the close spacing of near-ridge faults os the result of mechanical interactions between faults, and that the width of the rift valley at a slow-spareding ridge is controlled by the thickness of the lithospheric plate.

这是对山脊断层机制的研究。 主要研究人员将开发岩石圈变形模型，这些模型明确考虑一组离散断层的断层过程。 研究的三个阶段是：（1）检查脊构造应力和随后的岩石圈变形下的单个正常断层的基本机制，（2），以研究地壳中多个故障之间的机械相互作用及其对中洋脊附近的故障模式的影响，以及（3）以在阶段1和2的阶段范围内应用阶段和2的理论效果，以确定循环的特征。 研究多损坏系统的目的是测试以下假设：近距离断层的紧密间距OS的断层之间的机械相互作用的结果，并且在缓慢的山脊下裂谷的宽度受到岩石层板的厚度控制的。