Brief Seismotectonic Analysis of the June 24, 2012 Ninglang-Yanyuan MS5.7 Earthquake
详细信息
- 责任者：Hu Chaozhong (Institute of Earthquake Science ; CEA ; Beijing100036 ; China) ; Yang Panxin
- 刊名：Earthquake
- 出版年：2012
- 卷期：32(4)
- 关键词：震源机制 ; focal mechanism ; 地震构造 ; seismotectonics ; 强震 ; strong earthquakes ; 云南 ; Yunnan Province
- 页码：p.140-147
- 图表：2 tables, 3 refs.
- 分类号：0500
- issnNo：ISSN1000-3274
- isbnNo：CN11-1893/P
摘要
In this paper, the authors analyze focal mechanism solution of the June 24,2012 Ninglang-Yanyuan MS5.7 earthquake, distribution feature of aftershocks and disaster distribution of the main earthquake. Then, combining with regional distribution characteristics of the quaternary strata, regional geological structural characteristics and three-dimensional satellite remote sensing image, the authors proposed that the June 24, 2012 Ninglang-Yanyuan MS5.7 earthquake is the result of new activity of the North-West extension Yongning fault. The Yongning fault is of linear extension in image, fault scarp development, the Late Quaternary activity and the significance in regional tectonic deformation of the Yongning fault needs more study.