中国地震研究：英文版2012，Vol.26Issue(1)：118-127,10.
A Study on Average Velocity Ratios （Vp/Vs ） in the Hohhot- Baotou Area
A Study on Average Velocity Ratios （Vp/Vs ） in the Hohhot- Baotou Area
摘要
Abstract
The geological structure is complex in the Hohhot-Baotou area. Several earthquakes with Ms ≥ 6. 0 have occurred in the area in history. This article selected the Hohhot-Baotou area as the study region and divided it into 2 sub-regions, each with a spatial scope of 3°× 2°, according to the spatial distribution of ML ≥ 1.0 earthquakes occurring between January 2001 and April 2010, and the layout of the seismic network in the study region. Average velocity ratios of respective sub-regions were calculated, and comparative analysis was made on their temporal and spatial variations. Results show that there are slight differences between sub-regions in the variation amplitude of average velocity ratio curves over time, which mostly remains between 2. 5 % to 2. 584 %. In the Hohhot area, the average velocity ratio is 1.722, significantly lower than the average velocity ratio of 1. 733 in the Baotou area. We preliminarily concluded that this was related to the distribution of fault structures and properties of underground media in the Hohhot area.关键词
呼和浩特地区/包头地区/速度比/平均/VP/VS/区域地震/地质结构Key words
Hohhot-Baotou area/Average velocity ratio (Vp/Vs)/Spatio-temporalanalysis分类
地球科学引用本文复制引用
Han Xiaoming,Zhang Fan..A Study on Average Velocity Ratios （Vp/Vs ） in the Hohhot- Baotou Area[J].中国地震研究：英文版,2012,26(1):118-127,10.基金项目
This project was sponsored by the Earthquare Science and Technology SparkPlan （Project No. XHI2010Y）. （）
