High Resolution Natural Source Imaging of the Colorado Plateau Crust-Mantle Structure

科罗拉多高原壳幔结构的高分辨率天然源成像

• 批准号: 9628043
• 负责人: Kenneth Dueker
• 金额: $ 3.13万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-15 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9628043&HistoricalAwards=false
• 关键词: Resolution; Natural; Source; Imaging; Colorado

9628043 Dueker This research involves use of newly acquired PASSCAL seismic broad-band digital data to improve knowledge of the Colorado Plateau's lithospheric structure and address the origin of the Colorado Plateau's uplift. This unresolved Cenozoic uplift occurred after the plateau remained essentially at sea-level for most of its 1.7 billion year history. Proposed analysis will involve construction of common midpoint stacks of receiver functions, measurement of teleseismic P and S wave travel times, measurement of Pn travel times from two Deep Probe shots, and shear-wave splitting measurements for the 4 suitable SKS events recorded. The results should provide information on Moho depth, crustal and upper mantle velocities, and seismic velocity anisotropy due to fossil strain and/or recrystallization processes. ***

9628043 Dueker这项研究涉及使用新获得的Passcal地震宽带数字数据，以提高对科罗拉多高原的岩石圈结构的了解，并解决科罗拉多高原升高的起源。 这种尚未解决的新生代升高发生在高原基本上保持其17亿年历史的大部分海平面。 提出的分析将涉及构建接收器功能的常见中点堆栈，测量远程震动P和S波行程时间，测量来自两个深探针的PN旅行时间以及针对记录的4个合适的SKS事件的剪切波分裂测量。 结果应提供有关Moho深度，地壳和上地幔速度以及由于化石菌株和/或重结晶过程引起的地震速度各向异性的信息。 ***