The Active Characteristics of Faults around Handan City
详细信息
- 责任者：Zhou Junjie (Hebei University of Engineering ; Handan 056038 ; China) ; Song Hongli
- 刊名：Seismology and Geology
- 出版年：2012
- 卷期：34(1)
- 关键词：断裂带 ; fracture zones ; 地震活动性 ; seismicity ; 河北 ; Hebei Province
- 页码：p.100-109
- 图表：8 illus., 1 table, 13 refs.
- 分类号：0500
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
Activity of fault zones can often lead to earthquake.On the contrary,earthquake can also help people to analyze and forecast the characteristics of faults.To know more about the characteristics of active faults around Handan,and serve better for the urban construction and planning,a joint inversion method,which is based on earthquake data from local seismic network in Handan,was employed in this paper to get the distribution characteristic of earthquake parameters in space and time on the main faults around Handan and determine the characteristics of P-wave velocity structure in the crustal medium.Integrated analysis shows:The small earthquake activities around Handan are caused mainly by Cixian Fault and the Linzhou-Wu’an Fault;There is almost no activity on the southern end of Taihang Mountains piedmont fault zone(Cixian-Wu’an section) ;Earthquake activities are concentrated in a range of 6 ～ 10km;Fault activity gradually evolved from the faulting of the two faults simultaneously at the beginning to that the Cixian Fault was dominant.