云南区域数字地震台网台站场地响应研究

 采用H/V谱比法,计算给出了云南区域数字地震台网23个子台的地震波尾波随频率变化的场地响应特征.结果表明,在1~10 Hz频段内相对平坦,23个子台尾波的场地响应在1.37~3.59之间变化,平均2.05.在大于10 Hz的频段,少部分台站有较明显的放大作用.这些结果对云南地区地震波的研究会有所帮助.

The study of site responses of Yunnan digital network of area seismic stations

Using the H/V spectral ratios method,the characteristics of the site response changed with frequency of tail waves of twenty-three stations in Yunnan area are calculated.The results indicate that the site response is relatively smooth in the frequencies of 1 to 10 Hz,and the tail wave site response of the twenty-three substations is changing between 1.37 and 3.59,and its average value is 2.05.The site responses of some stations are obviously magnified at a high frequency(≥10 Hz).The above cognition is helpful to the study of earthquake wave in Yunnan.