Slip Rates at Depth along the Buried Faults in Beijing Plain Area Etstimated from Repeating Microearthquakes
详细信息
- 责任者：Li Le (Institute of Earthquake Science ; China Earthquake Administration ; Beijing 100036 ; China) ; Chen Qifu
- 刊名：Seismology and Geology
- 出版年：2010
- 卷期：32(3)
- 关键词：隐伏构造 ; subsurface structure ; 地震活动性 ; seismicity ; 北京 ; Beijing
- 页码：p.508-519
- 图表：7 illus., 1 table, 21 refs.
- 分类号：0500
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
Slip rates along the buried faults in Beijing plain area were investigated. Using cross-correlation analysis of available waveforms, the authors identified a total of 35 doublets and 20 multiplets that show high waveform similarity. Most of these sequences are aperiodic with recurrence intervals varying from a few minutes to hundreds of days. Given the limited quantity and quality of seismic data in the area, the authors have chosen a more robust approach to constrain repeated event locations. Based on four repeating sequences, the authors obtained the slip rate about 1.0 ～ 1.2 mm/a at seismogenic depths of Hangzhuang-Gaoliying Fault and Nankou-Sunhe Fault,and the slip rate of 1.5 mm/a at 9.4 km of the south boundary fault of Huai’ an Basin, which is consistent with geological and geodetic measurements.
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