小孔径台阵垂直分量P波接收函数研究及应用
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摘要
尝试用垂直分量P波接收函数技术,分离莫霍面多次反射透射震相PpPmp,以此确定台阵下方的地壳厚度.利用兰州小孔径台阵记录的16次深远地震资料,分离了PpPmp震相,根据其到时计算台阵下方的地壳厚度约(51.6±1.8)km,与前人研究结果一致.
The vertical-component P-wave receiver function technique is used to extract the Moho multiples(PpPmp phase) and determine thickness of the crust beneath the Lanzhou Seismic Array.The multiples(PpPmp phase) are determined with waveforms from 16 teleseismic deep earthquakes,and then the average crust thickness is estimated,which value is about(51.6±1.8) km.This result is also consistent with the result of previous studies.
The vertical-component P-wave receiver function technique is used to extract the Moho multiples(PpPmp phase) and determine thickness of the crust beneath the Lanzhou Seismic Array.The multiples(PpPmp phase) are determined with waveforms from 16 teleseismic deep earthquakes,and then the average crust thickness is estimated,which value is about(51.6±1.8) km.This result is also consistent with the result of previous studies.
引文
黄显良,朱元清.2005.地震台阵及其数据处理方法[J].地震地磁观测与研究,26(1):62--66.
刘启元,Rainer Kind,李顺成.1997a.中国数字地震台网的接收函数及其非线性反演[J].地球物理学报,40(3):356-368.
刘启元,李顺成,沈杨,陈九辉.1997b.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,40(6):763--771.
刘启元,陈九辉,李顺成,郭飚.2000.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,43(3):356--364.
沈旭章,周蕙兰.2009.用PKIKP的前驱震相探测青藏高原东部地幔底部的散射体[J].科学通报,54(24):3844-3851.
吴庆举,曾融生.1998.用宽频带远震接收函数研究青藏高原的地壳结构[J].地球物理学报,41(5):669--679.
周民都.2006.青藏高原东北缘深地震测深研究成果回顾[J].西北地震学报,28(2):189--191.
Langston C A.1979.Structure under Mount Rainier,Washington,inferred from teleseismic body waves[J].J GeophysRes,84(B4):4749--4762.
Langston C A,Hammer J K.2001.The vertical component P-wave receiver function[J].Bull Seism Soc Amer,91(6):1805--1819.
Li X Q,Nabelek J L.1999.Deconvolution of teleseismic body waves for enhancing structure beneath a seismometer array[J].Bull Seism Soc Amer,89(1):190--201.
Owens T J,Zandat G,Taylor S R.1984.Seismic evidence for an ancient rift beneath the Cumberland Plateau,Tennessee:A detailed analysis of broadband teleseismic P waveforms[J].J Geophys Res,89(B9):7783--7795.
Shen X,Ritter J R.2010.Small-scale heterogeneities below the Lanzhou CTBTO seismic array,from seismic wavefieldfluctuations[J].Journal of Seismology,14(3):481--493.
Sheng J,Schuster G T,Pankow K L,Pechmann J C,Nowack R L.2003.Coherence-weighted wavepath migration ofteleseismic data[J].EOS Trans AGU,84:S11E--0344.
Tseng T L,Chen W P.2006.Probing the southern Indian shield with P-wave receiver-function profiles[J].Bull SeismSoc Amer,96(1):328--333.
Wu Q J,Li Y H,Zhang R Q,Zeng R S.2007.Receiver functions from autoregressive deconvolution[J].Pure ApplGeophys,164(11):2175--2192.
Yu J,Schuster G T.2001.Crosscorrelogram migration of IVSPWD data[C]∥71st Ann Internat Mtg Soc Expl Geophys(Expanded Abstracts):456--459.
Zhu L,Kanamori H.2000.Moho depth variation in southern California from teleseismic receiver functions[J].J Geophys Res,105(B2):2969--2980.
刘启元,Rainer Kind,李顺成.1997a.中国数字地震台网的接收函数及其非线性反演[J].地球物理学报,40(3):356-368.
刘启元,李顺成,沈杨,陈九辉.1997b.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,40(6):763--771.
刘启元,陈九辉,李顺成,郭飚.2000.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,43(3):356--364.
沈旭章,周蕙兰.2009.用PKIKP的前驱震相探测青藏高原东部地幔底部的散射体[J].科学通报,54(24):3844-3851.
吴庆举,曾融生.1998.用宽频带远震接收函数研究青藏高原的地壳结构[J].地球物理学报,41(5):669--679.
周民都.2006.青藏高原东北缘深地震测深研究成果回顾[J].西北地震学报,28(2):189--191.
Langston C A.1979.Structure under Mount Rainier,Washington,inferred from teleseismic body waves[J].J GeophysRes,84(B4):4749--4762.
Langston C A,Hammer J K.2001.The vertical component P-wave receiver function[J].Bull Seism Soc Amer,91(6):1805--1819.
Li X Q,Nabelek J L.1999.Deconvolution of teleseismic body waves for enhancing structure beneath a seismometer array[J].Bull Seism Soc Amer,89(1):190--201.
Owens T J,Zandat G,Taylor S R.1984.Seismic evidence for an ancient rift beneath the Cumberland Plateau,Tennessee:A detailed analysis of broadband teleseismic P waveforms[J].J Geophys Res,89(B9):7783--7795.
Shen X,Ritter J R.2010.Small-scale heterogeneities below the Lanzhou CTBTO seismic array,from seismic wavefieldfluctuations[J].Journal of Seismology,14(3):481--493.
Sheng J,Schuster G T,Pankow K L,Pechmann J C,Nowack R L.2003.Coherence-weighted wavepath migration ofteleseismic data[J].EOS Trans AGU,84:S11E--0344.
Tseng T L,Chen W P.2006.Probing the southern Indian shield with P-wave receiver-function profiles[J].Bull SeismSoc Amer,96(1):328--333.
Wu Q J,Li Y H,Zhang R Q,Zeng R S.2007.Receiver functions from autoregressive deconvolution[J].Pure ApplGeophys,164(11):2175--2192.
Yu J,Schuster G T.2001.Crosscorrelogram migration of IVSPWD data[C]∥71st Ann Internat Mtg Soc Expl Geophys(Expanded Abstracts):456--459.
Zhu L,Kanamori H.2000.Moho depth variation in southern California from teleseismic receiver functions[J].J Geophys Res,105(B2):2969--2980.
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