[1]黄树生,左天惠,韦王秋,等.广 西 北 流 — 广 东 化 州 MS 5.2 级 地 震 地 震 动 峰 值 加 速 度 特 征[J].华南地震,2020,40(02):43-49.[doi:10.13512/j.hndz.2020.02.07]
　HUANG Shusheng,ZUO Tianhui,WEI Wangqiu,et al.Characteristic of Peak Acceleration Ground Motion of the Beiliu-Huazhou MS 5.2 Earthquake in the Junction of Guangxi and Guangdong[J].South China journal of seismology,2020,40(02):43-49.[doi:10.13512/j.hndz.2020.02.07]
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广 西 北 流 — 广 东 化 州 MS 5.2 级 地 震 地 震 动 峰 值 加 速 度 特 征()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
40
期数:
2020年02期
页码:
43-49
栏目:
出版日期:
2020-06-30

文章信息/Info

Title:
Characteristic of Peak Acceleration Ground Motion of the Beiliu-Huazhou MS 5.2 Earthquake in the Junction of Guangxi and Guangdong
作者:
黄树生 1 ;  左天惠 2;  韦王秋 1; 3;  潘岳怡 1;  符 衡 1
（ 1. 广西壮族自治区地震局 , 南宁 530022； 2. 广西壮族自治区国情地理监测院 , 南宁 530022；3. 广西工程防震研究院 , 南宁 530022）
Author(s):
HUANG Shusheng1;  ZUO Tianhui2;  WEI Wangqiu1; 3;  PAN Yueyi1;  FU Heng1
（1.Guangxi Autonomous Region Earthquake Agency, Nanning 530022, China;2.Guangxi Institute of Natural Resources Survey and Monitoring, Nanning 530022,China;3.Guangxi Academy of Engineering Shock Prevention, Nanning 530022,China）
关键词:
地震; 峰值加速度; 强震动
Keywords:
Earthquake;  Peak Acceleration;  Strong motion
分类号:
P315.7
DOI:
10.13512/j.hndz.2020.02.07
文献标志码:
A
摘要:
利用 2019 年 10 月 12 日广西北流 — 广东化州 MS 5.2 级地震中周边 50 个台站获取的强震动数据 , 经过基线校正、数字滤波后获得 EW、 NS、 UD 三方向的峰值加速度值 , 对数据的分析后表明 :0 ～ 30 km 范围内 ,3个方向的峰值加速度衰减明显。而震中距大于 30 km 的峰值加速度中 , 大部分的峰值加速度大于东部强震区的峰值加速度衰减关系理论值 , 只有小部分垂向峰值加速度和个别的水平向峰值加速度小于东部强震区的衰减关系理论值。研究区 3 个方向的峰值加速度在震中西侧有多中心出现，且其连线成呈现近 EW 向。研究区断层对本次地震的峰值加速度衰减影响不明显。竖向峰值加速度与两个水平方向峰值加速度有超过 1/3 的比值大于 0.65（ 35 组 /100 组）。 33 组数据中只有 3 组数据的峰值加速度大于 0.05g , 具有工程设防意义。
Abstract:
Using the strong vibration data obtained from 50 stations around the Beiliu-Huazhou MS5.2 earthquake on October 12th ,2019,the peak acceleration values in the three directions of EW,NS and UD are obtained after baseline correction and digital filtering. The analysis of the data shows that the peak acceleration attenuation in the three directions is obvious within the range of 0-30 km. However,for the peak acceleration with the epicenter distance greater than 30 km,most of the peak acceleration is greater than the theoretical value of the peak acceleration attenuation relationship in the eastern strong earthquake region,while only a small part of the vertical peak acceleration and some horizontal peak accelerations are smaller than the theoretical value of the attenuation relationship in the eastern strong earthquake region. The peak acceleration attenuation in the three directions of the study area has the characteristic of nw - w. The fault in the study area has no obvious effect on the attenuation of peak acceleration. The ratio of the vertical peak acceleration to the two horizontal peak accelerations was more than 1/3 greater than 0.65 (36 groups /100 groups). Of the 36 groups of data,only 3 groups of data have peak acceleration greater than 0.05g,which is of engineering fortification significance。

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备注/Memo

备注/Memo:
收稿日期 :2019-02-10 作者简介 : 黄树生（ 1969- ）, 男 , 高级工程师 , 主要从事地震监测工作。 E-mail:1092072429@qq.com
更新日期/Last Update: 2020-08-11