Empirical Estimation of Rupture Parameters and Strong Ground Motion of Yangzhou M4.9 Earthquake

彭小波; 洪海春; 迟明杰

doi:10.13409/j.cnki.jdpme.2013.04.019

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Empirical Estimation of Rupture Parameters and Strong Ground Motion of Yangzhou M4.9 Earthquake

更新时间：2025-12-11

- Empirical Estimation of Rupture Parameters and Strong Ground Motion of Yangzhou M4.9 Earthquake
- Vol. 33, Issue 4, Pages: 475-480(2013)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2013.04.019
  CLC： 315
- Published：2013
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[1]彭小波,洪海春,迟明杰.扬州4.9级地震破裂参数与强震动的经验估计[J].防灾减灾工程学报,2013,33(04):475-480.

彭小波, 洪海春, 迟明杰. Empirical Estimation of Rupture Parameters and Strong Ground Motion of Yangzhou M4.9 Earthquake[J]. 2013, 33(4): 475-480.
[1]彭小波,洪海春,迟明杰.扬州4.9级地震破裂参数与强震动的经验估计[J].防灾减灾工程学报,2013,33(04):475-480. DOI： 10.13409/j.cnki.jdpme.2013.04.019.

彭小波, 洪海春, 迟明杰. Empirical Estimation of Rupture Parameters and Strong Ground Motion of Yangzhou M4.9 Earthquake[J]. 2013, 33(4): 475-480. DOI： 10.13409/j.cnki.jdpme.2013.04.019.

摘要

2012年7月20日20时11分

江苏省扬州市高邮、宝应交界处发生了4.9级地震

震源深度5km

为1990年2月10日常熟5.1级地震以来江苏省发生的最大地震。为了定量和定性地分析本次地震特征

首先利用经验关系估算了其破裂面的长、宽和面积

以及破裂上升时间、滑动量和应力降等参数;然后基于我国东部PGA和烈度衰减关系对地震动强度进行了估算

并就其分布特征、彼此的差异及其影响因素进行了讨论;最后结合2002年5月13日美国Gilroy 4.9级地震的强震动记录

分析了强震动峰值的衰减和离散性、特征周期随断层距的变化特征

探讨了场地条件对强震动可能造成的影响。

Abstract

On July 20

2012

M4.9 earthquake occurred near the boundary of Gaoyou and Baoying

Jiangsu Province.The focal depth is about 5 km.It is the biggest earthquake in Jiangsu since 1990.To study the earthquake qualitatively and quantificationally

empirical relationships are employed to estimate the length

width and area of the rupture plane

and related rise time

slippage and stress drop.Then

the seismic intensities based on empirical PGA and intensity attenuation relationships are computed respectively.The distribution characteristics and the difference between the results are analyzed

and potential influence factors are discussed.At last

the strong motion records from M4.9 Gilroy earthquake are used to describe the possible variability of PGA and response spectrum.The effect of site condition is discussed.The results could provide a better understanding of Yangzhou earthquake

for its shortage of strong motion records.

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references

中国东部和西部地区水平向基岩加速度反应谱衰减关系 [J]. 俞言祥,汪素云. 震灾防御技术 . 2006(03)

中国分区地震动衰减关系的确定 [J]. 汪素云,俞言祥,高阿甲,阎秀杰. 中国地震 . 2000(02)

地震工程学[M]. 地震出版社 , 胡聿贤著, 2006

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