山东地区地震波一维速度模型研究
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摘要
根据山东地区及其邻区2007—2011年间45次地震事件中的919条P波到时资料,利用Kissling方法得到了山东地区的一维速度结构,并对该地区的震中和P波一维地壳速度结构进行联合反演,重新定位后的地震走时残差均方根得到了一定程度的降低,在精度和深度方面都有了一定的提高。
By using 919 P arrivals of 45 earthquakes in Shandong province and its neighboring area recorded in the Shandong seismic network,the 1D velocity model of Shandong area is obtained with the Kissling method.The earthquakes are relocated through simultaneous inversion combining epicenter and 1D P-wave velocity structure.After relocation,the travel time residual is reduced and the earthquake location accuracy of is improved.
By using 919 P arrivals of 45 earthquakes in Shandong province and its neighboring area recorded in the Shandong seismic network,the 1D velocity model of Shandong area is obtained with the Kissling method.The earthquakes are relocated through simultaneous inversion combining epicenter and 1D P-wave velocity structure.After relocation,the travel time residual is reduced and the earthquake location accuracy of is improved.
引文
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[3]Aki,K.,Lee,W.H.K.(1976).Determination of three-dimensional velocity anomalies under a seismic array using first P arrival timesfrom local earthquakes,part 1:A homogeneous initial model.Geophys.Res.,81(23):4381-4399.
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[8]李强,刘福田.一种横向不均匀介质中地震基本参数的测定方法[J].中国地震,1991,7(3):54-63.
[9]Kissling E,et al(1994).Initial reference models in local earthquake tomography.J.Geophys.Res.,99,19 635-19 646.
[10]雷建设.浅析中国地区体波走时层析成像研究进展[J].西北地震学报,2000,22(4):471-475.
[11]黄忠贤.中国东部海域岩石圈结构面波层析成像[J].地球物理学报,2009,52(3):653-662.
[12]黄海波.利用远震接收函数方法研究南海西沙群岛下方地壳结构[J].地球物理学报,2011,54(11):2788-2798.
[13]蒋科植,朱介寿,程先琼.利用面波方法研究欧亚大陆及周边海域岩石圈结构[J].华北地震科学,2012,30(2):1-7.
[14]王帅军,王夫运,张成科,等.北京及附近地区地壳速度结构与构造[J].华北地震科学,2011,29(2):6-12.
[15]Thurber,C.H.(1992).Hypocenter-velocity structure coupling in local earthquake tomography.Phys.Earth Planet.Inter.,75:55-62.
[16]Eberhart-Phillips,D.,and A.J.Michael(1993).Three-dimensional velocity structure,seismicity,and fault structure in the Parkfield re-gion,central California.Geophys.Res.,98,737-758.
[17]Michael,A.J.(1988).Effects of three-dimensional velocity structure on the seismicity of the 1984Morgan Hill,California,aftershocksequence.Bull.Seismol.Soc.Am.,78:1199-1221.
[18]Vander Hilst,R.D.,and W.Spakman(1989).Importance of the reference model in linearized tomography and images of subduction be-low the Caribbean plate.Geophys.Res.Lett.,16,1093-1096.
[19]Kissling,E.,et a1(1995).Improved seismic velocity reference model from local earthquake data in Northwestern Italy.Terra.Nova.,7,528-534.
[20]Spakman,W.,and G.Nolet(1988).Imaging algorithms,accuracy and resolution in delay time tomography in Mathematical Geophys-ics.In Vlaar N.J.,et al.(Eds.),Mathematical geophysics:a survey of recent developments in seismology and geodynamics(pp.155-187).Dordrecht:Reidel Publ.Co..
[21]于利民,刁桂苓,李钦祖.由深源远震体波记录反演华北北部地壳上地幔速度结构[J].华北地震科学,1983,(3):11-20.
[22]傅淑芳,刘宝诚.地震学教程[M].北京:地震出版社,1991:447-480.
[23]赵仲和.北京地区地震参数与速度结构的联合测定[J].地球物理学报,1983,26(2):131-139.
[24]陈立华,宋仲和.华北地区地壳上地幔P波速度结构[J].地球物理学报,1990,33(5):540-547.
[25]万永革,李鸿吉.京津唐张地区速度结构和震源位置联合反演的遗传算法[J].地震地磁观测与研究,1996,(3):57-66.
[26]王小龙,刘渊源,余国政,等.利用远震接收函数反演乌江彭水电站地震台下方地壳厚度[J].华北地震科学,2011,29(2):13-18.
[2]Crosson,R.S.(1976).Crustal structure modeling of earthquake data,1,Simultaneous least squares estimation of hypocenter and veloci-ty parameters.Geophys.Res.,81(17):3036-3046.
[3]Aki,K.,Lee,W.H.K.(1976).Determination of three-dimensional velocity anomalies under a seismic array using first P arrival timesfrom local earthquakes,part 1:A homogeneous initial model.Geophys.Res.,81(23):4381-4399.
[4]Aki,K.,et al.(1977).Determination of the three-dimensional seismic structure of the lithosphere.Geophys.Res.,82(2):277-296.
[5]Pavlis,G.,Booker,J.R.(1980).The mixed discrete-continuous inverse problem:Application of the simultaneous determination ofearthquake hypocenters and velocity structure.Geophys.Res.,85(B9):4801-4810.
[6]Spencer,C.,Gubbins,D.(1980).Travel-time inversion for simultaneous earthquake location and velocity structure determination in lat-erally varying media.Geophys.J.Roy.Astr.Soc.,63(1):95-116.
[7]刘福田.震源位置和速度结构的联合反演(I)——理论和方法[J].地球物理学报,1984,27(2):167-175.
[8]李强,刘福田.一种横向不均匀介质中地震基本参数的测定方法[J].中国地震,1991,7(3):54-63.
[9]Kissling E,et al(1994).Initial reference models in local earthquake tomography.J.Geophys.Res.,99,19 635-19 646.
[10]雷建设.浅析中国地区体波走时层析成像研究进展[J].西北地震学报,2000,22(4):471-475.
[11]黄忠贤.中国东部海域岩石圈结构面波层析成像[J].地球物理学报,2009,52(3):653-662.
[12]黄海波.利用远震接收函数方法研究南海西沙群岛下方地壳结构[J].地球物理学报,2011,54(11):2788-2798.
[13]蒋科植,朱介寿,程先琼.利用面波方法研究欧亚大陆及周边海域岩石圈结构[J].华北地震科学,2012,30(2):1-7.
[14]王帅军,王夫运,张成科,等.北京及附近地区地壳速度结构与构造[J].华北地震科学,2011,29(2):6-12.
[15]Thurber,C.H.(1992).Hypocenter-velocity structure coupling in local earthquake tomography.Phys.Earth Planet.Inter.,75:55-62.
[16]Eberhart-Phillips,D.,and A.J.Michael(1993).Three-dimensional velocity structure,seismicity,and fault structure in the Parkfield re-gion,central California.Geophys.Res.,98,737-758.
[17]Michael,A.J.(1988).Effects of three-dimensional velocity structure on the seismicity of the 1984Morgan Hill,California,aftershocksequence.Bull.Seismol.Soc.Am.,78:1199-1221.
[18]Vander Hilst,R.D.,and W.Spakman(1989).Importance of the reference model in linearized tomography and images of subduction be-low the Caribbean plate.Geophys.Res.Lett.,16,1093-1096.
[19]Kissling,E.,et a1(1995).Improved seismic velocity reference model from local earthquake data in Northwestern Italy.Terra.Nova.,7,528-534.
[20]Spakman,W.,and G.Nolet(1988).Imaging algorithms,accuracy and resolution in delay time tomography in Mathematical Geophys-ics.In Vlaar N.J.,et al.(Eds.),Mathematical geophysics:a survey of recent developments in seismology and geodynamics(pp.155-187).Dordrecht:Reidel Publ.Co..
[21]于利民,刁桂苓,李钦祖.由深源远震体波记录反演华北北部地壳上地幔速度结构[J].华北地震科学,1983,(3):11-20.
[22]傅淑芳,刘宝诚.地震学教程[M].北京:地震出版社,1991:447-480.
[23]赵仲和.北京地区地震参数与速度结构的联合测定[J].地球物理学报,1983,26(2):131-139.
[24]陈立华,宋仲和.华北地区地壳上地幔P波速度结构[J].地球物理学报,1990,33(5):540-547.
[25]万永革,李鸿吉.京津唐张地区速度结构和震源位置联合反演的遗传算法[J].地震地磁观测与研究,1996,(3):57-66.
[26]王小龙,刘渊源,余国政,等.利用远震接收函数反演乌江彭水电站地震台下方地壳厚度[J].华北地震科学,2011,29(2):13-18.
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