| 鄂尔多斯西缘地区地震动高频衰减特性初步研究 |
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| 引用本文： | 包金哲,王树波,张帆.鄂尔多斯西缘地区地震动高频衰减特性初步研究[J].震灾防御技术,2021,16(2):293-301. |
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| 作者姓名： | 包金哲 王树波 张帆 |
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| 作者单位： | 内蒙古自治区地震局，呼和浩特 010010 |
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| 基金项目： | 中国地震局监测、预报、科研三结合课题（3JH202001015）；中国地震局地震科技星火计划（XH20014） |
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| 摘 要： | 以鄂尔多斯西缘地区（34°N—42°N，103°E—109°E）为研究对象，基于2007—2020年研究区域内14个强震动台站记录到的116条强震记录（1≤MS≤8），采用加速度反应谱法，通过MATLAB软件编程拟合鄂尔多斯西缘地区kappa值与震中距的线性回归关系。研究结果表明，鄂尔多斯西缘地区强震台站高频衰减参数kappa0值为0.01545～0.06560 s；等效剪切波速（VS20、VS30）与震中距存在对数关系；随着VS20、VS30的增大，kappa0值逐渐减至0。
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| 关 键 词： | 鄂尔多斯西缘地区 地震动 高频衰减 kappa 震中距 |
| 收稿时间： | 2020/12/8 0:00:00 |
A Preliminary Study on the Attenuation Characteristics of High Frequency Ground Motionin the Western Margin of Ordos |
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| Bao Jinzhe,Wang Shubo,Zhang Fan.A Preliminary Study on the Attenuation Characteristics of High Frequency Ground Motionin the Western Margin of Ordos[J].Technology for Earthquake Disaster Prevention,2021,16(2):293-301. |
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| Authors: | Bao Jinzhe Wang Shubo Zhang Fan |
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| Institution: | Earthquake Administration of Inner Mongolia Autonomous Regin, Hohhot 010010, Inner Mongolia, China |
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| Abstract: | The western margin of Ordos (N: 34°—42°; E: 103 °—109 °) as the research object, using 2007 to 2020, the research area of 14 strong motion stations recorded of the 116 strong earthquake events data(2≤MS≤8), using Anderson and Hough the classic algorithm, using MATLAB software programming to calculate the ordos west region, the linear relationship between the kappa value and the epicenter distance to calculate the ordos kappa0 earthquake stations in the western margin high frequency attenuation parameter value is between 0.01545 s to 0.06560 s. There is a logarithmic relationship between equivalent shear wave velocities (VS20, VS30) and epicenter distance.With the increase of VS20 and VS30, the kappa0 value gradually decreases to 0. |
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| Keywords: | Western margin of Erdos region Ground motion High Frequency attenuation Kappa Epicentraldistance |
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