Rupture Characteristics of the 1989 Loma Prieta Earthquake

1989 年洛马普列塔地震的破裂特征

• 批准号: 9011456
• 负责人: Gregory Beroza
• 金额: $ 4.3万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1992-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9011456&HistoricalAwards=false
• 关键词: Rupture; Characteristics; 1989; Loma; Prieta

This research will study the rupture characteristics of the Loma Prieta earthquake using three types of seismic waveform data: (1) very-long-period data from the GEOSCOPE and IDA worldwide networks, (2) intermediate-period teleseismic data from the WWSSN and GSN networks, and (3) strong-motion data from local stations. The slip models obtained will be compared with the distribution of aftershocks and with fault models derived from geodetic data inversions. Analysis of fault geometry relative to fault rupture offers the prospect of a better understanding of earthquake faulting and strain accumulation over the seismic cycle. This research is a component of the National Earthquake Hazard Reduction Program.

本研究将利用三种地震波数据(1)来自GEOSCOPE和IDA全球台网的甚长周期数据，(2)来自WWSSN和GSN台网的中期远震数据，以及(3)来自局地台站的强震数据，研究Loma Prieta地震的破裂特征。得到的滑动模型将与余震分布和由大地数据反演得到的断层模型进行比较。与断层破裂相关的断层几何分析为更好地理解地震断层和地震周期上的应变积累提供了前景。这项研究是国家减少地震危害计划的一个组成部分。