Teleseismic Response of Kinematic Earthquake Source Models in General Elastic Media

一般弹性介质中运动震源模型的远震响应

• 批准号: 9614698
• 负责人: Charles Langston
• 金额: $ 16万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-04-15 至 2000-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614698&HistoricalAwards=false
• 关键词: Teleseismic; Response; Kinematic; Earthquake; Source

9614698 Langston This research involves the use of existing teleseismic data sets from the GSN and WWSSN to investigate the effect of 3D heterogeneity and layered anisotropy on teleseismic waveforms. Earthquakes, as a rule, occur in geologically interesting areas with clear evidence of structural heterogeneity. There is evidence that near-source heterogeneity can have significant effects on radiated teleseismic waves form earthquakes and that these effects will map back into inverted source parameters such as the spatial/temporal distribution of fault slip and source orientation. The frequency dependence of the near-source effect will be investigated theoretically for proposed structure models constrained by detailed geological and geophysical studies in the literature. The teleseismic data from observed earthquakes will then be modeled using forward calculation and inversion techniques to determine source parameters and to determine the influence of heterogeneity and anisotropy. ***

9614698 Langston 这项研究涉及使用来自 GSN 和 WWSSN 的现有远震数据集来研究 3D 异质性和分层各向异性对远震波形的影响。 通常，地震发生在具有明显结构异质性证据的地质有趣地区。 有证据表明，近源异质性会对地震辐射的远震波产生重大影响，并且这些影响将映射回反演的源参数，例如断层滑动的空间/时间分布和源方向。 对于受文献中详细地质和地球物理研究约束的所提出的结构模型，将从理论上研究近源效应的频率依赖性。 然后，将使用正演计算和反演技术对观测到的地震的远震数据进行建模，以确定震源参数并确定非均质性和各向异性的影响。 ***