| 泾阳小震群的活动特征 |
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| 引用本文： | 丁韫玉,薛勇杰.泾阳小震群的活动特征[J].地震学报,1985,7(3):337-341. |
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| 作者姓名： | 丁韫玉 薛勇杰 |
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| 作者单位： | 陕西省地震局 |
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| 摘 要： | 本文利用单台资料,对泾阳小震序列进行了详细的分析。研究了震群的时间序列、频度-震级关系、余震衰减规律以及震源的空间分布,并对其发震构造进行了探讨。结果表明这个小区域、低水平的微小地震序列与大区域、长时间的中、强地震有相似的活动特征。而且,震源的空间分布也表现出与构造有关,震源的错动方式也受区域应力场的控制。
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ACTIVITY FEATURES OF JINGYANG SMALL EARTHQUAKE SWARMS |
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| Institution: | Seismological Eurean of Shaanxi Province |
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| Abstract: | In this paper,the small earthquake sequence occurred in Jingyang,Shaanxi during 25 April-30 November 1983 are analysed. Using only the data of Jingyang seismograph station,the temporal distribution,the relation between repetition rate and magnitude,the attenuation of aftershocks and the spatial distribution of the hypocenters for the earthquakes in the swarms are studied. This paper also makes an approach to the seismogenic structure of the region. Results show that activity feactures of the low-level micro-earthquake sequence occurring in a small region are similar to those of moderate-strong earthquakes occurring in a large region during a long period of time. Furthermore,it is indicated that the sptial distribution of the earthquake foci is related to the tectonic activity and that the mode of hypocentral displacment is controlled by the stress field in the crust of the whole region. |
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