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  李敏,李小军.九寨沟M7.0地震仪器烈度计算比较分析[J].震灾防御技术,2017,12(4):803-814, DOI:10.11899/zzfy20170409.

九寨沟M7.0地震仪器烈度计算比较分析
摘要:    地震发生后,强震动观测台网可以获取灾区分布式台站位置的强震动记录,通过基于这些强震动记录得到的地震动参数可以快速地评估地震烈度的空间分布,以迅速判定不同地区的受灾程度,尤其是地震极震区的分布范围,为政府开展应急救援并合理地分配救援力量、物资等提供依据,以保证救援人员及时、准确地到达极震区展开搜救工作,减少人民群众的生命财产损失。本文介绍了国内外7种地震仪器的烈度计算方法,基于四川九寨沟M7.0级地震获取的强震动记录,对这7种方法的计算烈度值进行了对比分析。结果表明,各方法计算的仪器烈度与宏观烈度的差值均在1度误差范围以内,均显示了良好的实用性,且行业标准法和综合判别法两者的计算结果较为一致。
作者单位
李敏 中国地震台网中心, 北京 100045 
李小军 中国地震局地球物理研究所, 北京 100081;中国地震风险与保险实验室, 北京 100081 
关  键  词:九寨沟地震  仪器烈度  烈度算法  加速度反应谱
DOI:10.11899/zzfy20170409
基金项目:国家重点研发计划项目(2016YFC1402800);中央级公益性科研院所基本科研业务费专项(DQJB17T01);国家自然科学基金项目(U1434210,51421005)
收稿日期:2017-11-25
作者简介:李敏,女,生于1985年。工程师。主要从事地震监测工作以及工程地震研究。E-mail:limin@seis.ac.cn
通讯作者:
Comparison of Different Methods Used to Calculate Instrumental Intensities of the Jiuzhaigou MS7.0 Earthquake
Abstract:      After occurrence of an earthquake, strong motion observation network can record ground motion at distributed observation stations. Based on the ground motion parameters from these records, the spatial distribution of seismic intensity can be quickly determined, and then the damage degree in different areas can be estimated. This kind of information provides the technical basis for the emergency despondence, in order to ensure that rescue workers reach the extreme earthquake area with search and rescue operations timely and accurately, and to reduce the casualties and property loss. In this paper, we introduced 7 intensity algorithms and compared the results from the records of Jiuzhaigou MS7.0 earthquake. We found that the differences between the instrumental intensities calculated by each method and the macro intensities were within 1-degree range, which suggested good practicality of these different methods. The results calculated by the calculation code method and the integrated test showed good consistence.
Keywords:  Jiuzhaigou MS7.0 earthquake  Instrumental intensity  Intensity algorithm  Spectral acceleration
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