| 呼和浩特—包头地区平均波速比研究 |
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| 引用本文： | 韩晓明,张帆.呼和浩特—包头地区平均波速比研究[J].中国地震研究,2012,26(1):118-127. |
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| 作者姓名： | 韩晓明 张帆 |
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| 基金项目： | sponsored by the Earthquare Science and Technology Spark Plan(Project No.XH12010Y) |
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| 摘 要： | 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.
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| 关 键 词： | Hohhot-Baotou area Average velocity ratio(VP/VS) Spatio-temporal analysis |
| 收稿时间： | 2010/11/3 0:00:00 |
A Study on Average Velocity Ratios( VP/VS ) in the Hohhot-Baotou Area |
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| Han Xiaoming and Zhang Fan.A Study on Average Velocity Ratios( VP/VS ) in the Hohhot-Baotou Area[J].Earthquake Research in China,2012,26(1):118-127. |
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| Authors: | Han Xiaoming and Zhang Fan |
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| Institution: | Earthquake Administration of Inner Mongolia Autonomous Region, Hohhot 010010 , China;Earthquake Administration of Inner Mongolia Autonomous Region, Hohhot 010010 , China |
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| 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. |
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| Keywords: | Hohhot-Baotou area Average velocity ratio ( VP/VS ) % Spatio-temporal analysis |
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