Rupture Characteristics of the 1989 Loma Prieta Earthquake

本研究将利用三种类型的地震波形资料研究洛马普里塔地震的破裂特征：(1)来自GEOSCOPE和IDA全球台网的超长周期资料；(2)来自WWSSN和GSN台网的中期远震资料；(3)来自地方台的强震资料。得到的滑动模型将与余震的分布以及通过大地测量数据反演得到的断层模型进行比较。通过分析与断层破裂相关的断层几何结构，可以更好地理解地震断层作用和地震周期内的应变累积。这项研究是国家减少地震灾害计划的一部分。

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.