Seismic Perturbation Methods with Application to Inversion

地震扰动方法及其在反演中的应用

• 批准号: 8904169
• 负责人: Robert Nowack
• 金额: $ 5万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-12-15 至 1991-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8904169&HistoricalAwards=false
• 关键词: Seismic; Perturbation; Methods; Application; Inversion

This research is to develop theoretical perturbation methods towards inversion of seismograms for 3-D earth structure. Improved realism in theoretical methods is a field which promises to yield major new results on earth structure. An important application will be to the dramatically improved new data sets such as those which the NSF-supported PASSCAL instrumentation will produce. Perturbation methods will be applied to the calculation of functional derivatives for seismic inversion. The ultimate goal is the simultaneous inversion of both travel-time and amplitude for velocity, attenuation and interface parameters. Because this work will provide basic theoretical analysis techniques for a wide range of seismic investigations including those anticipated for determination of earthquake-related crustal structures, it is a contribution to the basic research of the National Earthquake Hazard Reduction Program.

本研究旨在发展理论微扰方法 三维地球结构的地震记录反演。 改进的现实主义理论方法是一个领域， 在地球结构方面取得重大新成果。一个重要 应用将是显着改善的新数据集 例如NSF支持的PASSCAL仪器 将生产。 扰动方法将被应用于 用于地震反演的函数导数计算。 的 最终目标是同时反演两个走时 速度、衰减和界面参数的振幅。 因为这项工作将提供基本的理论分析 广泛的地震调查技术，包括 预计用于确定与地震有关的地壳 结构，这是对基础研究的贡献。 国家地震减灾计划。