从亚洲S波波速结构看地幔流体运动特征
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摘要
总结S波速度成像研究的成果,在对全球地幔对流模式分析对比的基础上,考察了亚洲地区地幔S波速结构的总体特征以及地幔流体运动的模式。认为上地幔S波速结构的总体特征总体上可以用板块构造学说来解释,亚欧超级大陆中心区地幔中有地热能量积累。海南下方地幔S波速度负异常可能反映现代地幔热羽柱,地幔热流体的运动有由下向上及倾向两种模式。两种模式可以互相穿接,具有同等的重要性。
Based on analysis and comparison of global manle convection model,this study summarized the research results of S-wave seismic tomography,and investigated the general features of mantle S-wave volicty pattern in Asia and the model of mantle fluid movement.It is generally considered that the S-wave velocity structure features of the Upper Mantle can be explained by the plate tectonics.Heat accumulation may occur in the mantle beneath the central Eurasia superplate.A strong negative velocity disturbance occurs in the mantle below the Hainan Island and South China Sea,reflecting a modern mantle-plume system.Movement of mantle heat-fluid flows shows two different geometrical patterns: upward migration and oblique migration,both of which can happen one after another or alone,and then are of equal importance.
Based on analysis and comparison of global manle convection model,this study summarized the research results of S-wave seismic tomography,and investigated the general features of mantle S-wave volicty pattern in Asia and the model of mantle fluid movement.It is generally considered that the S-wave velocity structure features of the Upper Mantle can be explained by the plate tectonics.Heat accumulation may occur in the mantle beneath the central Eurasia superplate.A strong negative velocity disturbance occurs in the mantle below the Hainan Island and South China Sea,reflecting a modern mantle-plume system.Movement of mantle heat-fluid flows shows two different geometrical patterns: upward migration and oblique migration,both of which can happen one after another or alone,and then are of equal importance.
引文
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嵇少丞,王茜,王勤等.2007.苏鲁-大别超高压变质岩的弹性力学性质与密度的关系.岩石学报,23(12):3054～3064.
嵇少丞,王茜,杨文采.2009.华北克拉通泊松比与地壳厚度的关系及其大地构造意义.地质学报,83(3):324～330.
刘福田,曲克信,吴华等.1986.华北地区的地震层析成像.地球物理学报,29(5):442～449.
刘建华,孙若昧.1995.秦岭-大别造山带及其南北缘地震层析成像.地球物理学报,38(1):46～54.
胥颐,刘建华,郝天珧等.2006.中国东部海域及邻区岩石层地幔的P波速度结构与构造分析.地球物理学报,49(4):1053～1061.
杨文采.1989.地球物理反演与地震层析成像.北京:地质出版社.
杨文采,李幼铭.1993.应用地震层析成像.北京:地质出版社.
杨文采.1998a.后板块地球内部物理学导论.北京:地质出版社,1～142.
杨文采.1998b.全球流体通道网络系统.地球物理学报,41(5):621～633.
杨文采,张学明,于常青.2007.中国华北上地幔破裂带.地质学报,81(10):1305～1313.
杨文采.2009.东亚古特提斯域大地构造物理学.北京:石油工业出版社,1～443.
杨文采,金振民,于常青.2008.结晶岩中天然气异常的地震响应.中国科学(D辑),38(9):1057～1068.
张学民,刁桂苓,赵英萍等.2006.华北地区深部地幔剪切波速度结构研究.地球物理学报,49(6):1709～1719.
朱光明,杨文采,杨振华,杜有成等.2008.中国大陆科学钻探孔区的垂直地震剖面调查.地球物理学报,51(2):479～490.
刘光鼎.1992.中国海区及邻域地质地球物理场系列图.北京:科学出版社.
Charles M,Barbara R.2000.The shear velocity structure of themantle fromthe inversion of of body,surface and higher modeswaveforms.Geophys.J.Int.,143(3):709～728.
Condie K C.2001.Mantle Plumes and Their Record in EarthHistory.London:Cambridge Univ.Press.
Davies G F.1999.Dynamic Earth.London:Cambridge Univ.Press.
Mavko G,Mukorji T,Dvorkin J.2009.Rock physics handbook.London:Cambridge Unin.Press.
Nolet G.1994.Low S velocities under the Tornquist-Teisseyre zone:evidence for water injection into the transition zone bysubduction.Journal of Geophysical Research:99,15813～15820.
Phipps Morgan,Morgan WJ,Zhang Y S,Smith W H F.1995.Observational hints for a plume-fed sub-oceanic asthenosphereand its role in mantle convection.J.Geophys.Res.:100,12753～12768.
Phipps Morgan,Morgan W J.1999.Two-stage melting and thegeochemical evolution of the mantle:a recipe for mantle-pudding.Earth Planet.Sci.Lett.:170,215～239.
LI Xiangdong,Barbara R.1995.Comparison of global waveforminversions with and without considering cross-branch modalcoupling.Geophys.J.Int.:121,695～709.
Zhao D,Hasegawa A,Horjuchi S.1992.Tomographicimaging of Pand S wave velocity structure beneath northeastern Japan.JGeophys Res.:97,19909～19928.
嵇少丞,王茜,王勤等.2007.苏鲁-大别超高压变质岩的弹性力学性质与密度的关系.岩石学报,23(12):3054～3064.
嵇少丞,王茜,杨文采.2009.华北克拉通泊松比与地壳厚度的关系及其大地构造意义.地质学报,83(3):324～330.
刘福田,曲克信,吴华等.1986.华北地区的地震层析成像.地球物理学报,29(5):442～449.
刘建华,孙若昧.1995.秦岭-大别造山带及其南北缘地震层析成像.地球物理学报,38(1):46～54.
胥颐,刘建华,郝天珧等.2006.中国东部海域及邻区岩石层地幔的P波速度结构与构造分析.地球物理学报,49(4):1053～1061.
杨文采.1989.地球物理反演与地震层析成像.北京:地质出版社.
杨文采,李幼铭.1993.应用地震层析成像.北京:地质出版社.
杨文采.1998a.后板块地球内部物理学导论.北京:地质出版社,1～142.
杨文采.1998b.全球流体通道网络系统.地球物理学报,41(5):621～633.
杨文采,张学明,于常青.2007.中国华北上地幔破裂带.地质学报,81(10):1305～1313.
杨文采.2009.东亚古特提斯域大地构造物理学.北京:石油工业出版社,1～443.
杨文采,金振民,于常青.2008.结晶岩中天然气异常的地震响应.中国科学(D辑),38(9):1057～1068.
张学民,刁桂苓,赵英萍等.2006.华北地区深部地幔剪切波速度结构研究.地球物理学报,49(6):1709～1719.
朱光明,杨文采,杨振华,杜有成等.2008.中国大陆科学钻探孔区的垂直地震剖面调查.地球物理学报,51(2):479～490.
刘光鼎.1992.中国海区及邻域地质地球物理场系列图.北京:科学出版社.
Charles M,Barbara R.2000.The shear velocity structure of themantle fromthe inversion of of body,surface and higher modeswaveforms.Geophys.J.Int.,143(3):709～728.
Condie K C.2001.Mantle Plumes and Their Record in EarthHistory.London:Cambridge Univ.Press.
Davies G F.1999.Dynamic Earth.London:Cambridge Univ.Press.
Mavko G,Mukorji T,Dvorkin J.2009.Rock physics handbook.London:Cambridge Unin.Press.
Nolet G.1994.Low S velocities under the Tornquist-Teisseyre zone:evidence for water injection into the transition zone bysubduction.Journal of Geophysical Research:99,15813～15820.
Phipps Morgan,Morgan WJ,Zhang Y S,Smith W H F.1995.Observational hints for a plume-fed sub-oceanic asthenosphereand its role in mantle convection.J.Geophys.Res.:100,12753～12768.
Phipps Morgan,Morgan W J.1999.Two-stage melting and thegeochemical evolution of the mantle:a recipe for mantle-pudding.Earth Planet.Sci.Lett.:170,215～239.
LI Xiangdong,Barbara R.1995.Comparison of global waveforminversions with and without considering cross-branch modalcoupling.Geophys.J.Int.:121,695～709.
Zhao D,Hasegawa A,Horjuchi S.1992.Tomographicimaging of Pand S wave velocity structure beneath northeastern Japan.JGeophys Res.:97,19909～19928.
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