福建及邻区水平基岩加速度反应谱衰减关系

Attenuation Relations of Horizontal Bedrock Acceleration Response Spectrum in Fujian and Its Adjacent Areas

收集福建及邻区内既有仪器测定震级又有宏观烈度调查资料的28次破坏性地震资料,并对上述资料进行烈度等效处理、近远场补点、数据加权处理,加强对大震近场与远场的控制,建立了适合本区的地震烈度衰减关系;利用最新得出的美国西部基岩水平向地震加速度反应谱衰减关系,采用转换方法建立了本区的基岩水平向地震加速度反应谱衰减关系;并与华南地区的地震动参数衰减关系进行了对比,其结果更加符合该区近代地震震害分布的地域性特征。所得结果可应用于该区的地震安全性评价、震害预测、损失快速评估等防震减灾领域。

Based on the 28 destructive seismic data both with instrumental magnitude and macroscopic intensity investigation in Fujian and its adjacent areas through the intensity equivalent process,auxiliary point of the near-and far-field,data weighting and the strengthening of near-and far-field control to large earthquake,the intensity attenuation relations suitable to this area is established.By making use of the latest attenuation relations of bedrock horizontal ground acceleration response spectrum in West U.S.A,the transformation method is employed to establish such attenuation relations in this area,which is then compared with the parameter attenuation relation of ground motion in South China.And the result is more suitable to the region characteristic of modern seismic damage distribution,which can be applied to the field of earthquake disaster prevention and reduction like seismic safety evaluation,seismic damage prediction and loss rapid assessment in this area.