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组合边界条件下二维三分量tti介质波场数值模拟

Keywords: 有限差分法,旋转交错网格,npml边界吸收条件,自由地表边界条件,组合边界条件,tti介质,一阶应力—速度方程,波场,数值模拟

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Abstract:

?从tti介质一阶应力—速度方程出发,利用旋转交错网格高阶有限差分方法,将非分裂完全匹配层(non-splitingperfectmatchlayer,简称npml)边界吸收条件和自由边界条件相结合形成组合边界条件,进行了二维三分量tti介质弹性波场数值模拟。波场快照和炮记录表明:①采用非分裂式边界条件能较好地消除近地表大角度入射波和瞬逝波;②组合边界条件与npml边界吸收条件相比,不仅有效地压制了边界反射,同时实现了对自由地表的模拟,获得了丰富的全波场信息,其中在地表产生的ps转换横波作为一种特殊的横波现象,可为近地表结构调查以及多波波场分析等提供有益信息;③自由地表引起的面波以及多次波对偏移结果有着重要影响,因此在实际地震资料处理中应当充分考虑自由地表条件对波场的影响效应。数值模拟结果证实了组合边界条件下二维三分量tti介质波场数值模拟方法的可行性和正确性。

References

[1]  robbertvanvossen,robertssonjoa,chapman,h.finite-ditferencemodelingofwavepropagationin,fluid-solidconfiguration[j].geophysics.2002,67(2):618-624
[2]  collino,andtsogkac.applicationoftheperfectlymatchedabsorbinglayermodeltothelinearelastody-namicprobleminanisotropicheterogeneousmedia.geophisics,2001,66(1),294-307
[3]  drossaert,fandgiannopoulosa.,nonsplitcomplexfrequency-shiftedpmlbasedonrecursiveintegrationforfdtdmodelingofelasticwaves.geophysics,2007,72(2):t9-t17
[4]  kuzuoglu,andmittrar.frequencydependenceoftheconstitutiveparametersofcausalperfectlymatchedanisotropicabsorbers[j].ieeemicrowaveandguidedwaveletters.1996,6:447-449
[5]  levander,r.fourth-orderfinite-differencep-svseismograms[j].geophysics.1988,53(11):1425-1436
[6]  gutowski,r,hronf,wagner,eandtreitels.s*,bulletinoftheseismologicalsocietyofamerica,1984,74(1):1-78
[7]  altermanz,karal,c.propagationofseismicwaveinlayeredmediabyfinitedifferencemethods.bulletinofthiseismologicalsocietyofamerica,1968,58(1):367-398
[8]  madariagar.dynamicsofanexpandingcircularfault.bulletinoftheseismologicalsocietyofamerica,1976,66(3):639-666
[9]  virieuxj.shwavepropagationinheterogeneousmedia:velocity-stressfinitedifferencemethod[j].geophysics.1984,49(11):1933-1957
[10]  virieuxj.p-svwavepropagationinheterogeneousmedia:velocity-stressfinitedifferencemethod[j].geophysics.1986,51(4):889-901
[11]  moczop,kristek,etal.3dheterogeneousstag-gered-gridtinite-ditferencemodelingofseismicmotionwith92harmonicandarithmeticaveragingofelasticmoduiianddensities[j].bulletinofthesei-~mologicalsocietyofamerica.2002,92(8):3042-3066
[12]  saenger,h,goldn,shapiro,a.modelingthepropagationofelasticwavesusing,moditiediinite-differencegrid[j].wavemotion.2000,31(1):77-92
[13]  saenger,h,bohlent.finite-diiferencemodelingofviscoelasticandanisotropicwavepropagationusingtherotatedstaggeredgrid[j].geophysics.2004,69(2):583-591
[14]  liz.compensatingiinite-diiferenceerrorsin3-dmigrationandmodeling.geophysics,1995,56(10):1650-1660
[15]  boris,p,book,l.flux-correctedtransport:i.shasta,afluidtransportalgorithmthatworks.journalofcomputationalphysic,1973,11(1):38-69
[16]  book,l,boris,p,haink.flux-correctedtransportii,generalizationofthemethod[j].journalofcomputationalphysia.1975,18:248-283
[17]  duqi-zhen,libinandhoubo.numericalmodelingofseismicwavefieldsintransverselyisotropicmediawith,compactstaggered-gridfinitedifferencescheme.appliedgeophysia,2009,6(1),42-49
[18]  engquistb,majdaa.absorbingboundaryconditionsforthenumericalsimulationofwaves[j].mathematiaofcomputation.1977,31:629-651
[19]  cerjanc,kosloffd,kosloff,andreshefm.,nonreflectingboundaryconditionfordiscreteacousticandelasticwaveequation.geophysia,1985,50(4)705-708
[20]  berengerj.,perfectlymatchedlayerfortheabsorptionofelectromagneticwaves[j].journalofcomputationalphysics.1994,114:185-
[21]  robertsson,aj.,numericalfree-surfaceconditionforelastic/viscoelasticfinitedifferencemodelinginthepresenceoftopography[j].geophisics.1996,61(6):1921-1934
[22]  bohlen,andsaenger,e.accuracyofheterogeneousstaggered-gridfinite-differencemodelingofrayleighwaves.geophisics,2006,71(4):t109-t115
[23]  吴国忱,罗彩明,梁锴.tti介质弹性波频率一空间域有限差分数值模拟.吉林大学学报.2007,37(5):1023-1033wuguo-chen,luocai-mingandliangkai.fre-quency-spacedomainfinitedifferencenumericalsimulationofelasticwaveinttimedia.journalofjilinuniversity,earthscienceedition),2007,37(5):1023-1033
[24]  裴正林,王尚旭.任意倾斜各向异性介质中弹性波波场交错网格高阶有限差分法模拟.地震学报.2005.27(4),441-451peizheng-linandwangshang-xu.,staggered-gridhigh-orderfinite-differencemodelingforelasticwave-fieldinarbitrytitltanisotropicmedia.actasei-~mologicasinica,2005,27(4):441-451
[25]  吴国忱.各向异性介质地震波传播与成像.山东东营:中国石油大学出版社,2006
[26]  mittetr.free-surfaceboundaryconditionsforelasticstaggered-gridmodelingschemes[j].geophysics.2002,67(5):1616-1623
[27]  杜启振,秦童.横向各向同性介质弹性波多分量叠前逆时偏移.地球物理学报,2009,52(3):801-807duqi-zhen,qintong.wavefieldpropagationcharacteristicsinthefractureinducedanisotropicdoubleporositymedium.chinesejournalofgeophysics,2009,52(3):801-807

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