Waveform Analysis of Earthquake Multiplets and Clusters

9405498 Beroza这项研究是利用加利福尼亚州北部的Calnet地震台网的数字波形数据来分析地震的多发性和群集性。这项研究的目标是：1)开发加州北部和中部的类似地震目录，以研究影响多重地震发生的因素，推测与蠕变有关；2)探测和了解与大地震有关的地壳波传播的变化。初步工作已经检测到与1989年洛马普里塔地震有关的同震和可能的地震前速度变化，这些现象将得到更详细的调查。这项研究是国家减少地震灾害计划的一部分。***

9405498 Beroza This research is to analyze earthquake multiplets and clusters using digital waveform data from the Calnet seismic network in northern California. The goals of the study are to 1) develop a catalog of similar earthquakes for northern and central California in order to study the factors that influence the occurrence of multiplets, presumably creep-related, and 2) to detect and understand changes in crustal wave propagation associated with a major earthquake. Preliminary work has detected co-seismic and possibly pre-seismic velocity changes related to the 1989 Loma Prieta earthquake, and these phenomena will be investigated in more detail. This research is a component of the National Earthquake Hazard Reduction Program. ***