联合钻孔资料及地形数据估算宝鸡地区v_S30  

Estimate v_S30 base on drill data and DEM in Baoji area

作　　者：韶丹[1] 孙哲[1] 田勤虎[1] SHAO Dan;SUN Zhe;TAIN Qinhu(Shaanxi Earthquake Agency, Xi’an 710068, China)

机构地区：[1]陕西省地震局,中国西安710068

出　　处：《地震地磁观测与研究》2018年第1期117-122,共6页Seismological and Geomagnetic Observation and Research

基　　金：陕西省自然科学基础研究计划(项目编号:2017JM4034);2016年度地震应急青年重点任务(项目编号:CEA_EDEM-201617);陕西省地震局启航与创新基金(项目编号:QC201702)

摘　　要：将地形数据经过坡度计算,利用坡度与v_S30相关关系,计算宝鸡地区场地近似v_S30。为了得到接近实际的波速分布,借助宝鸡地区钻孔资料,研究选定区域内v_S30近似值与实测结果的差异,并对差异的空间变化趋势进行分析,在此基础上,对模型估算的v_S30进行修正,进而得到接近实际的v_S30分布,并给出基于NEHRP的宝鸡地区场地分类。The vS30approximation of sites is acquired by correlations between vS30and slopes after the calculation of the slope of topography using DEM data.In order to improve the precision of vS30,the actual drilling data in Baoji area is used.The difference between the estimated value of vS30and the measured value is analyzed as well as the spatial variation trend of the variance.Based on all above,the vS30which estimated from the model is amended.The work laid the foundation for the ground motion attenuation characteristics in Baoji area.

关 键 词：钻孔 地形数据 vS30 修正 

分 类 号：P315.63[天文地球—地震学]