为新区划图编制所建立的地震动衰减关系
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
介绍了建立新一代地震区划图所采用的地震动参数衰减关系的总体思路,并从资料、衰减关系分区、衰减关系模型、回归方法、转换等方面说明了地震动参数衰减关系的建立过程,给出了我国分区地震烈度和地震动参数衰减关系结果。新的地震动衰减关系的建立,具有如下特点:一是基于更加丰富可靠的强震记录和烈度资料;二是采用了具有大震近场饱和特征的地震动衰减模型;三是采用了使结果更加稳定的分步回归方法;四是在地震动衰减关系分区时考虑了地震活动性特征。与第四代地震区划图衰减关系相比,由于地震动衰减模型的变化和高震级强震记录的增加,高震级下的峰值加速度有所降低,而中强地震区的峰值加速度则在低震级时有所提高。
The general idea for establishing ground motion attenuation relations for the new seismic hazard map of China is introduced. The developing procedures are briefly summarized through strong motion data, attenuation zoning, attenuation model, regression strategy, and transformation. The development of the new attenuation relations is characterized by the following four aspects: more abundant data is based on; a model representing ground motion saturation is used; a more robust step-regression approach is applied; and a new attenuation zoning scheme is utilized. As compared with the attenuation relations used in the previous version of seismic hazard map of China, the predicted PGA for large earthquake in the new map is lower due to the application of the new attenuation model and more strong motion data in new field, while the predicted PGA for smaller earthquake is higher in moderate seismicity regions than before.
引文
陈达生,刘汉兴,1989.地震烈度椭圆衰减关系.华北地震科学,7(3):31-42.
    胡聿贤,张敏政,1984.缺乏强震观测资料地区地震动参数的估计方法.地震工程与工程振动,4(1):1—11.
    靳超宇,俞言祥,2009.欧洲中小震基岩水平向地震动衰减关系研究.中国地震,25(2):170-177.
    卢建旗,李山有,李伟,2009.中强地震活动区地震动衰减关系的确定.世界地震工程,25(4):33-43.
    汪素云,时振梁,1993.有感半径与震级的关系及其应用.国家地震局震害防御司编,见:中国地震区划文集.北京:地震出版社,179-184.
    汪素云,俞言祥,高阿甲等,2000.中国分区地震动衰减关系的确定.中国地震,16(2):99-106.
    汪素云,裴顺平,许忠淮等,2007.利用M L振幅研究地壳横波Q值Ⅰ:不同构造区的衰减特征.地球物理学报,50(6):1740-1747.
    汪素云,裴顺平,Hearn等,2008.利用M L振幅研究地壳横波Q值Ⅱ:Q横向变化特征.地球物理学报,51(1):133-139.
    王继,俞言祥,2008.华中、华南中强地震区地震烈度衰减关系研究.震灾防御技术,3(1):20-25.
    肖亮,俞言祥,2010.一种新的拟合地震动衰减关系的分步回归法.地震学报,32(6):725-732.
    肖亮,俞言祥,2011.中国西部地区地震烈度衰减关系.震灾防御技术,6(4):358-371.
    Chandra U.,1979.Attenuation of intensities in the United States.Bull.Seism.Soc.Amer.,69(6):2003-2024.
    Chiou B.and Youngs R.R.,2008.An NGA model for the average horizontal component of peak ground motion and response spectra.Earthquake Spectra,24(1):173-216.
    Power M.,Chiou B.,Abrahamson N.et al.,2008.An overview of the NGA project.Earthquake Spectra,24(1):3-21.
    US Geological Survey,2008.Documentation for the2008update of the United States National Seismic Hazard Maps.USGS Open-File Report.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心