垂直分量P波接收函数确定宝清台地壳厚度
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摘要
利用宝清台记录的9个同一方位深远地震资料,使用垂直分量P波接收函数技术,成功分离出莫霍面多次反射透射震相Pp Pmp,根据其到时计算出宝清台下方地壳厚度约33.5 km,与前人研究结果基本一致。
The vertical-component P-wave receiver function technique is used to extract the Moho multiples( Pp Pmp phase) and determine the thickness of the crust below the Baoqing station by 9 depth-teleseismic earthquakes come from the same back azimuth. The paper calculates that the crust thickness is 33.5 km under the Baoqing station. This result is also consistent with previous studies.
The vertical-component P-wave receiver function technique is used to extract the Moho multiples( Pp Pmp phase) and determine the thickness of the crust below the Baoqing station by 9 depth-teleseismic earthquakes come from the same back azimuth. The paper calculates that the crust thickness is 33.5 km under the Baoqing station. This result is also consistent with previous studies.
引文
[1]Langston CA.Structure under Mount Rainier,Washington,inferred from teleseismic body waves[J].Geophys Res,1979,84(B4):4749-4762.
[2]Owens TJ,Zandat G,Taylor S R.Seismic evidence for an ancient rift beneath the Cumberland Plateau,Tennessee:A detailed analysis of broadband teleseismic P waveforms[J].Geophys Res,1984,89(B9):7783-7795.
[3]刘启元,李顺成,沈杨,等.延怀盆地及其临区地壳上地幔速度结构的宽频带地震台阵研究[J].地球物理学报,1997,40(6):763-771.
[4]刘启元,陈九辉,李顺成,郭彪,等.新疆伽师强震群区三维地壳上地幔S波速度结构及其地震成因的探讨[J].地球物理学报,2000,43(3):356-364.
[5]Langston,Ch.A.J.K.Hammer.The vertical component Pwave receiver function[J].Bull.Seism.Soc.Am.2001,91:1805-1819.
[6]Yu,J.,G.T.Schuster.Crosscorrelogram migration of IVSPWD data[C]//71st Ann.Internat.Mtg.,Soc.Expl.Geophys.(Expanded Abstracts),2001,456-459.
[7]Sheng,J.,G.T.Schuster,K.L.Panknow,etal.Coherenceweighted wavepath migration of teleseismic data[C]//EOS Trans.AGU,2003,84,S11E-0344.
[8]Tai-Lin Tseng,Wang-Ping Chen.Probing the Southern Indian Shield with P-Wave Receiver-Function Profiles[J].Bulletin of the Seismological Society of America,2006,96:328-333.
[9]秦满忠,张元生,沈旭章,等.小孔径台阵垂直分量P波接收函数研究及应用[J].地震学报,2012,34(1):44-51.
[10]中国地震局监测预报司.地震学与地震观测[M].北京:地震出版社,2007.
[11]危自根,陈凌.东北地区至华北北缘地壳结构的区域差异:地壳厚度与波速比的联合约束[J].地球物理学报,2012,55(11):3 601-3 614.
[12]周民都,王椿镛,曾融生.青藏高原东北缘地壳上地幔速度结构的地震层析成像研究[J].地震工程学报.2012,34(3):24-233
[2]Owens TJ,Zandat G,Taylor S R.Seismic evidence for an ancient rift beneath the Cumberland Plateau,Tennessee:A detailed analysis of broadband teleseismic P waveforms[J].Geophys Res,1984,89(B9):7783-7795.
[3]刘启元,李顺成,沈杨,等.延怀盆地及其临区地壳上地幔速度结构的宽频带地震台阵研究[J].地球物理学报,1997,40(6):763-771.
[4]刘启元,陈九辉,李顺成,郭彪,等.新疆伽师强震群区三维地壳上地幔S波速度结构及其地震成因的探讨[J].地球物理学报,2000,43(3):356-364.
[5]Langston,Ch.A.J.K.Hammer.The vertical component Pwave receiver function[J].Bull.Seism.Soc.Am.2001,91:1805-1819.
[6]Yu,J.,G.T.Schuster.Crosscorrelogram migration of IVSPWD data[C]//71st Ann.Internat.Mtg.,Soc.Expl.Geophys.(Expanded Abstracts),2001,456-459.
[7]Sheng,J.,G.T.Schuster,K.L.Panknow,etal.Coherenceweighted wavepath migration of teleseismic data[C]//EOS Trans.AGU,2003,84,S11E-0344.
[8]Tai-Lin Tseng,Wang-Ping Chen.Probing the Southern Indian Shield with P-Wave Receiver-Function Profiles[J].Bulletin of the Seismological Society of America,2006,96:328-333.
[9]秦满忠,张元生,沈旭章,等.小孔径台阵垂直分量P波接收函数研究及应用[J].地震学报,2012,34(1):44-51.
[10]中国地震局监测预报司.地震学与地震观测[M].北京:地震出版社,2007.
[11]危自根,陈凌.东北地区至华北北缘地壳结构的区域差异:地壳厚度与波速比的联合约束[J].地球物理学报,2012,55(11):3 601-3 614.
[12]周民都,王椿镛,曾融生.青藏高原东北缘地壳上地幔速度结构的地震层析成像研究[J].地震工程学报.2012,34(3):24-233
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