云南区域数字地震台网台站场地响应研究
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摘要
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.
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.
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.
引文
[1]王俊,崔庆谷.云南数字地震台网谱震级的测定与地震辐射能的计算[J].云南大学学报:自然科学版,2007,29(S1):155-159.
[2]NAKAMURA Y.A method for dynamic characteristicsestimation of subsurface using microtremor on theground surface[J].QR of RTR1,1989,30(1):25-33.
[3]MOYA C.Inversion of source parameters and site effectsfrom strong ground motion records using genetic algo-rithms[J].BSSA,2000,90(4):977-992.
[4]JAVIER L.Site effect evaluation using spectral ratioswith only one station[J].BSSA,1993,83(5):1 574-1 594.
[5]THEODULIDIS N.Horizontal to vertical spectral ratioand geological conditions:the case of garner valley downwhole array in southern california[J].BSSA,1996,86(2):306-319.
[6]ZAKARIA A.On the horizontal to vertical spectral ratioin sedimentary basins[J].BSSA,2000,90(4):1 101-1 106.
[7]马淑芹,龚绍京,栗连弟.使用单台三分向地震记录资料评估场地效应方法的研究[J].西北地震学报,2001,23(3):269-273.
[8]CHAEL E.Spectral scaling of earthquakes in the Mi-ramichi region of New Brunswick[J].BSSA,1987,77(2):347-365.
[9]黄玉龙,郑斯华,刘杰,等.广东地区地震动衰减和场地响应的研究[J].地球物理学报,2003,46(1):54-61.
[10]苏有锦,刘杰,郑斯华,等.云南地区S波非弹性衰减Q值研究[J].地震学报,2006,28(2):206-212.
[11]叶建庆.场地响应与震源定标律[C]//云南地球物理文集(二).昆明:云南大学出版社,1997.164-167.
[12]叶建庆.丽江地震场地响应分析研究[J].地震研究,1998,21(2):115-121.
[13]刘丽芳,苏有锦,刘杰,等.利用云南数字地震台网资料反演台站场地响应[J].地震研究,2007,30(1):34-40.
[14]高立新,郑斯华.内蒙古中西部地区震源参数和场地响应反演[J].西北地震学报,2005,27(2):109-114.
[15]李祖宁,周峥嵘.利用数字地震台网资料联合反演福建地区Q值、场地响应和震源参数[J].地震地质,2005,27(3):437-445.
[2]NAKAMURA Y.A method for dynamic characteristicsestimation of subsurface using microtremor on theground surface[J].QR of RTR1,1989,30(1):25-33.
[3]MOYA C.Inversion of source parameters and site effectsfrom strong ground motion records using genetic algo-rithms[J].BSSA,2000,90(4):977-992.
[4]JAVIER L.Site effect evaluation using spectral ratioswith only one station[J].BSSA,1993,83(5):1 574-1 594.
[5]THEODULIDIS N.Horizontal to vertical spectral ratioand geological conditions:the case of garner valley downwhole array in southern california[J].BSSA,1996,86(2):306-319.
[6]ZAKARIA A.On the horizontal to vertical spectral ratioin sedimentary basins[J].BSSA,2000,90(4):1 101-1 106.
[7]马淑芹,龚绍京,栗连弟.使用单台三分向地震记录资料评估场地效应方法的研究[J].西北地震学报,2001,23(3):269-273.
[8]CHAEL E.Spectral scaling of earthquakes in the Mi-ramichi region of New Brunswick[J].BSSA,1987,77(2):347-365.
[9]黄玉龙,郑斯华,刘杰,等.广东地区地震动衰减和场地响应的研究[J].地球物理学报,2003,46(1):54-61.
[10]苏有锦,刘杰,郑斯华,等.云南地区S波非弹性衰减Q值研究[J].地震学报,2006,28(2):206-212.
[11]叶建庆.场地响应与震源定标律[C]//云南地球物理文集(二).昆明:云南大学出版社,1997.164-167.
[12]叶建庆.丽江地震场地响应分析研究[J].地震研究,1998,21(2):115-121.
[13]刘丽芳,苏有锦,刘杰,等.利用云南数字地震台网资料反演台站场地响应[J].地震研究,2007,30(1):34-40.
[14]高立新,郑斯华.内蒙古中西部地区震源参数和场地响应反演[J].西北地震学报,2005,27(2):109-114.
[15]李祖宁,周峥嵘.利用数字地震台网资料联合反演福建地区Q值、场地响应和震源参数[J].地震地质,2005,27(3):437-445.
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