Multicomponent Seismic Constraints on Deep Crustal Velocity Structure Beneath the Colorado Plateau and Transition Zone

科罗拉多高原和过渡带下方深部地壳速度结构的多分量地震约束

• 批准号: 9018552
• 负责人: Roy Johnson
• 金额: $ 8.3万
• 依托单位: University of Arizona
• 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: 1991-02-15 至 1994-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9018552&HistoricalAwards=false
• 关键词: Multicomponent; Seismic; Constraints; Deep; Crustal

This research is to analyze and interpret the high-quality, multicomponent, normal-incidence to wide-angle data that were collected by the University of Arizona PACE Piggyback Lithospheric Experiment. Focus of the work will be: 1) to place constraints on Poisson's ratio and lower crustal composition; 2) analyze upper crustal P-wave and S-wave anisotropy; 3) model normal-incidence to wide-angle reflections to determine P-wave and S-wave velocity structure; 4) reconcile refraction and COCORP reflection results that offer widely differing interpretations of crustal thickness and reflectivity; 5) place quantitative constraints on the dip of the Moho beneath the transition zone and constrain the nature of this fundamental boundary; and 6) to interpret upper crustal structures that control Colorado Plateau monoclines.

本研究旨在分析和解释高质量的， 多分量，垂直入射到广角数据， 亚利桑那大学PACE Piggyback 岩石圈实验 工作重点将是：1）放置 泊松比和下地壳成分的限制; 2） 上地壳纵、横波各向异性分析; 3）模型 垂直入射到广角反射以确定P波 4）调和折射和COCORP 反射结果提供了广泛不同的解释， 地壳厚度和反射率; 5）位置定量 过渡带下方莫霍面倾角的约束 并限制这一基本边界的性质;以及6） 解释控制科罗拉多高原上地壳结构 单斜