摘要
运用褶积、广义回归及差分方法对泾阳地震前后关中地区跨断层形变资料进行了分析研究，结果显示：①泾阳地震是大面积应力积累和调整的结果；②所监测的各断裂活动震前存在着中短期形变异常，呈现出明显的阶段性活动特征；③进入短期的异常标志是中短期异常出现转折或反向；④各断层活动速率呈准同步变化，曲线形态大都呈现典型的α、β、γ相变化。
By using convolution, generalized regression and differential method, the cross fault deformation data in Guanzhong region before and after Jinyang earthquake are analysed. The results show that (1) the Jinyang earthquake is resulted from the stress accumulation and adjustment in large scale region; (2) before earthquake, the activity of monitored faults shows medium and short term deformation anomalies, and the anomalies have the episodic characteristics; (3) the anomalous mark arriving at short term is that the medium term anomalies are transformed and reversed ;(4) the activity rates in each fault show the quasi-synchronous changes and the majority of curve shapes appear as the typical α、β、γ phase changes.
出处
《地壳形变与地震》
CSCD
1999年第4期75-79,共5页
Crustal Deformation and Earthquake
关键词
地壳形变
泾阳-渭南
断裂带
泾阳地震
地震
crustal deformation, anomaly, Jinyang Weinan faultzone, Jinyang eaarthquake
