Collaborative Research: Determination of Earthquake Source Parameters from Waveform Date for Studies of Global and Regional Seismicity

合作研究：从波形数据确定震源参数以研究全球和区域地震活动

• 批准号: 8803786
• 负责人: Geoffrey Abers
• 金额: $ 8.6万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1991-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8803786&HistoricalAwards=false
• 关键词: Collaborative; Research; Determination; Earthquake; Source

In this proposal for joint research with Harvard University we request funding for the continuation of global and regional studies of earthquake source mechanisms using waveform inversion. The research will cover the following topics. 1. Continuation of the centroid-moment-tensor (CMT) analysis of current events. 2. Utilization of the data from the High-Gain Long-Period (HGLP) network which operated between 1972 and 1976. 3. CMT and very broad band analysis of the HGLP data for selected events between 1972 and 1976. This period is characterized by many large earthquakes lacking, so far, proper analysis. 4. Systematic search for earthquakes with a statistically significant non-double couple component. Two events near Torishima Island, Japan, and three events on Iceland have mechanisms that appear to be consistent with magma injection. 5. Global synthesis. Compilation of a catalog CMT solution in a volume which would include discussion of the seismicity on a region by region basis. 6. Quasi-real time source studies. The objective is to produce reliable source mechanisms one to two hours after the occurrence of the event. 7. Analysis of spatio-temporal distribution of earthquakes and its relation to tectonic processes.

在与哈佛大学联合研究的这一提案中，我们要求使用波形反演继续进行地震源机制的全球和区域研究。 该研究将涵盖以下主题。 1。对时事件的质子矩张量（CMT）分析的延续。 2。从1972年至1976年之间运行的高生成长期（HGLP）网络的数据利用。3。cmt和1972年至1976年之间选择的HGLP数据的非常广泛的频段分析。该时期的特征是许多大地震缺乏，到目前为止缺乏适当的分析。 4。具有具有统计学意义的非双夫妇成分的系统搜索地震。 日本Torishima岛附近的两次事件以及冰岛上的三场事件的机制似乎与岩浆注入一致。 5。全球合成。 目录中的目录CMT解决方案的汇编将包括按区域划分的地震性。 6。准真实的时间来源研究。 目的是在事件发生后一到两个小时产生可靠的源机制。 7。地震的时空分布及其与构造过程的关系分析。