利用本溪自流井水温观测资料检测地球自由振荡
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摘要
用本溪自流井数字化水温观测资料,采用直接计算功率谱密度的方式对印尼苏门答腊9.0级大地震激发的球型自由振荡进行了提取,准确检测到了0S2～0S9低频基型球型振荡,并且还检测到了2个谐频球型振荡:1S2、1S3。用该井数字化水温观测资料提取了0S2、0S3、0S4共3个振型的分裂,虽然3个振型均只得到2个单峰,但地球自由振荡谱线分裂现象的检测为研究地球的深内部结构提供了新的、不同类型的观测资料。研究表明,用本溪自流井数字化水温观测资料可以提取到苏门答腊大地震激发的地球球型振荡,这就为地球自由振荡的研究提供了一种新的观测手段。
In the first time of using digital observation data of Benxi artesian water temperature,as well as using direct calculation of power spectral density to extract the ball free oscillations prompted by the 9.0 Sumatra earthquake,and accurately detected 0S2～0S9 low-frequency base-type oscillations and two-frequency spherical harmonic oscillator:1S2、 1S3.By using the temperature observations,for the first time we successfully extracted 3 mode split:0S2、 0S3、 0S4.Although only two single peaks were received by the three mode shapes,but the phenomenon of the Earth's free oscillations spectrum of split testing provides a new and different types of observational data to the study of internal structure of the Earth.Studies have shown that digital observation data of Benxi artesian water temperature is indeed to extract the the ball free oscillations prompted by the 9.0 Sumatra earthquake which prompted a new observational tool for the Earth's free oscillations study.
In the first time of using digital observation data of Benxi artesian water temperature,as well as using direct calculation of power spectral density to extract the ball free oscillations prompted by the 9.0 Sumatra earthquake,and accurately detected 0S2～0S9 low-frequency base-type oscillations and two-frequency spherical harmonic oscillator:1S2、 1S3.By using the temperature observations,for the first time we successfully extracted 3 mode split:0S2、 0S3、 0S4.Although only two single peaks were received by the three mode shapes,but the phenomenon of the Earth's free oscillations spectrum of split testing provides a new and different types of observational data to the study of internal structure of the Earth.Studies have shown that digital observation data of Benxi artesian water temperature is indeed to extract the the ball free oscillations prompted by the 9.0 Sumatra earthquake which prompted a new observational tool for the Earth's free oscillations study.
引文
雷湘鄂,孙和平,许厚泽,等.2007.苏门答腊地地震激发的地球自由振荡及其谱线分裂的检测与讨论[J].中国科学(D辑),37(4):504-511.
雷湘鄂,许厚泽,孙和平.2004.由5个国际超导重力仪台站资料检测到的秘鲁8.2级大地震所激发的球型自由振荡现象[J].中国科学(D辑),34(5):483-491.
邱泽华,马瑾,池顺良,等.2007.钻孔差应变仪观测的苏门答腊大地震激发的地球环型自由振荡[J].地球物理学报,50(3):797-805.
任佳,陈华静,蒋翠荣,等.2009a.数字化水位仪观测的苏门答腊大地震激发的地球球型自由振荡[J].地震研究,32(4):333-338.
任佳,陈华静,王松,等.2009b.汶川大地震激发的地球球型自由振荡[J].中国地震,25(1):73-80.
孙小龙,刘耀炜.2007.本溪自流井水位与水温同震变化关系研究[J].大地测量与地球动力学,27(6):100-104.
万永革,盛书中,周公威.2007.中国数字地震台网记录的苏门答腊—安达曼地震激发的地球球型自由振荡的检测[J].地震学报,29(4):369-381.
万永革,周公威,郭燕平.2004.昆仑山口西地震激发的地球环型振荡[J].防灾减灾工程学报,24(1):1-7.
万永革,周公威,郭燕平.2005.中国数字地震台网记录的昆仑山口西地震的球型自由振荡[J].地震,25(1):31-40.
万永革.2007.数字信号处理的MATLAB实现[M].北京:科学出版社.
鱼金子,车用太,刘五洲.1997.井水温度微动态形成的水动力学机制研究[J].地震,17(4):389-396.
张昭栋,迟镇乐,陈会民,等.2000.井水位的振荡与地震波[J].地震研究,23(4):418-425.
张昭栋,郑金涵,冯初刚.1988.一种估算地震引起应力场调整的新方法[J].地震,8(3):19-27.
Alsop L E,Sutton G H,Ewing M.1961.Free oscillation of Earth observedon strain and pendulum seismographs[J].J Geophy.Res,66(2):631-641.
Benioff H,Press F,Smith S.1961.Excitation of the free oscillations of theearth by earthquakes[J].J Geophys.Res,66(2):605-619.
Bogert B P.1961.An observation of free oscillations of the Earth[J].JGeophys.Res,66(2):643-646.
Bolt B A,Currie R G.1975.Maximum entropy estimates of Earth torsionaleigenperiods from1960trieste data[J].Geophys J R astr Soc,40:107-114.
Dahlen F A,Sailor R V.1979.Rotational and elliptical splitting of the freeoscillations of the earth[J].Geophys J Rastr Soc,58:609-623.
Dziewonski A M,Anderson D L.1981.Preliminary reference Earth model(PREM)[J].Phys Earth Planet Interi,25:297-356.
Dzi ewonski A M,Gillbert F.1972.Observation of normal modes from84recordings of the Alaskan earthquakes of1964March28[J].Geo-phys J R astr Soc,27:393-446.
He X,Tromp J.1996.Normal-mode constraints on the structure of theEarth[J].J Geophys Res,110(B9):20053-20082.
Lam b H.1882.On the variations of an elastic sphere[J].Lond Math SocProc,13:233-256.
Masters G.198l.Gilbert F Structure of the inner core infered from obser-vations of its spheroidal shear modes[J].Geophys Res Lett,(8):569-571.
Ness N R,Harrison C T,Sliehter L B.1961.Observation of the free oscil-lation of the earth[J].J Geophys Res,66:621-629.
Rosat S,Sato T,Imanishi Y,et al.2005.High-resolution analysis of thegravest seismic normal modes after the2004MW=9Sumatra earth-quake using superconducting gravimeter data[J].Geophys Res Lett,32:L133304,doi:10.1029/2005GL023l28.
Ste in S,Okal E A.2005a.Speed and size of the Sumatra earthquake[J].Nature,434:581-582.
Ste in S,Okal E A.2005b.The2004Sumatra earthquake and India oceant sunami:What happened and why[J].The Earth′s Scientist,XXXI(2):6-11.
Zadro M,Braitenberg C.1999.Measurements and interpretations of tilt-strain gauges in seismically active areas[J].Earth Science Reviews,47:151-187.
雷湘鄂,许厚泽,孙和平.2004.由5个国际超导重力仪台站资料检测到的秘鲁8.2级大地震所激发的球型自由振荡现象[J].中国科学(D辑),34(5):483-491.
邱泽华,马瑾,池顺良,等.2007.钻孔差应变仪观测的苏门答腊大地震激发的地球环型自由振荡[J].地球物理学报,50(3):797-805.
任佳,陈华静,蒋翠荣,等.2009a.数字化水位仪观测的苏门答腊大地震激发的地球球型自由振荡[J].地震研究,32(4):333-338.
任佳,陈华静,王松,等.2009b.汶川大地震激发的地球球型自由振荡[J].中国地震,25(1):73-80.
孙小龙,刘耀炜.2007.本溪自流井水位与水温同震变化关系研究[J].大地测量与地球动力学,27(6):100-104.
万永革,盛书中,周公威.2007.中国数字地震台网记录的苏门答腊—安达曼地震激发的地球球型自由振荡的检测[J].地震学报,29(4):369-381.
万永革,周公威,郭燕平.2004.昆仑山口西地震激发的地球环型振荡[J].防灾减灾工程学报,24(1):1-7.
万永革,周公威,郭燕平.2005.中国数字地震台网记录的昆仑山口西地震的球型自由振荡[J].地震,25(1):31-40.
万永革.2007.数字信号处理的MATLAB实现[M].北京:科学出版社.
鱼金子,车用太,刘五洲.1997.井水温度微动态形成的水动力学机制研究[J].地震,17(4):389-396.
张昭栋,迟镇乐,陈会民,等.2000.井水位的振荡与地震波[J].地震研究,23(4):418-425.
张昭栋,郑金涵,冯初刚.1988.一种估算地震引起应力场调整的新方法[J].地震,8(3):19-27.
Alsop L E,Sutton G H,Ewing M.1961.Free oscillation of Earth observedon strain and pendulum seismographs[J].J Geophy.Res,66(2):631-641.
Benioff H,Press F,Smith S.1961.Excitation of the free oscillations of theearth by earthquakes[J].J Geophys.Res,66(2):605-619.
Bogert B P.1961.An observation of free oscillations of the Earth[J].JGeophys.Res,66(2):643-646.
Bolt B A,Currie R G.1975.Maximum entropy estimates of Earth torsionaleigenperiods from1960trieste data[J].Geophys J R astr Soc,40:107-114.
Dahlen F A,Sailor R V.1979.Rotational and elliptical splitting of the freeoscillations of the earth[J].Geophys J Rastr Soc,58:609-623.
Dziewonski A M,Anderson D L.1981.Preliminary reference Earth model(PREM)[J].Phys Earth Planet Interi,25:297-356.
Dzi ewonski A M,Gillbert F.1972.Observation of normal modes from84recordings of the Alaskan earthquakes of1964March28[J].Geo-phys J R astr Soc,27:393-446.
He X,Tromp J.1996.Normal-mode constraints on the structure of theEarth[J].J Geophys Res,110(B9):20053-20082.
Lam b H.1882.On the variations of an elastic sphere[J].Lond Math SocProc,13:233-256.
Masters G.198l.Gilbert F Structure of the inner core infered from obser-vations of its spheroidal shear modes[J].Geophys Res Lett,(8):569-571.
Ness N R,Harrison C T,Sliehter L B.1961.Observation of the free oscil-lation of the earth[J].J Geophys Res,66:621-629.
Rosat S,Sato T,Imanishi Y,et al.2005.High-resolution analysis of thegravest seismic normal modes after the2004MW=9Sumatra earth-quake using superconducting gravimeter data[J].Geophys Res Lett,32:L133304,doi:10.1029/2005GL023l28.
Ste in S,Okal E A.2005a.Speed and size of the Sumatra earthquake[J].Nature,434:581-582.
Ste in S,Okal E A.2005b.The2004Sumatra earthquake and India oceant sunami:What happened and why[J].The Earth′s Scientist,XXXI(2):6-11.
Zadro M,Braitenberg C.1999.Measurements and interpretations of tilt-strain gauges in seismically active areas[J].Earth Science Reviews,47:151-187.
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