引文
[1]Tan E,Gurnis M,Han L.Slabs in the lower mantleand their modulation of plume formation[J].Geochemistry,Geophysics,Geosystems,2002,11(3).1 067.doi:10.1029/2001GC000238.
[2]Grand S P.Mantle shear structure beneath theAmerican and surrounding oceans[J].J Geophys Res,特1994,99:11 591-11 621.
[3]Ritsema J,Heijst H J,Woodhouse J H.Complexshear wave velocity structure i maged beneath Africaand Iceland[J].Science,1999,286:1 925-1 928.
[4]Van der Hilst R D,Widiyantoro S,Engdahl E R.Evidence for deep mantle circulation from globaltomography[J].Nature,1997,386:578-584.
[5]Kuo B Y,Garnero EJ,Lay T.Tomographic inversionof S-SKS ti mes for shear velocity heterogeneity in D″:Degree 12 and hybrid models[J].Journal ofGeophysical Research-Solid Earth,2000,105(B12):28 139-28 157.
[6]Lay T,Hel mberger D V.A lower mantle S wavetriplication and the shear velocity structure of D″[J].Geophys J R Astron Soc,1983,75:799-837.
[7]Ni S D,Ding X M,Hel mberger D V,et al.Low-velocity structure beneath Africa from forwardmodeling[J].Earth and Planet Sci Lett,1999,170:497-507.
[8]Ni S D,Hel mberger D V.Probing an ultra-lowvelocity zone at the core mantle boundary with P and Swaves[J].Geophysical Research Letters,2001,28(12):2 345-2 348.
[9]Ni S D,Hel mberger D V.Seismological constraints onthe African superplume,could be the oldest structurein the lower mantle[J].EPSL,2003,206:119-131.
[10]Hedlin M A H,Shearer P M,Earle P S.Seismicevidence for small-scale heterogeneity throughout theEarth s mantle[J].Nature,1997,387(6629):145-150.
[11]Niu F L,Wen L X.Strong seismic scatterers near thecore-mantle boundary west of Mexico[J].Geophys ResLett,2001,28:3 557-3 560.
[12]Ni S D,Hel mberger D V,Tromp J.Three-di mensional structure of he African superplume fromwaveform modelling[J].Geophysical JournalInternational,2005,161(2):283-294.
[13]Lay T,Garnero E J,William Q.Partial melting in athermo-chemical boundary layer at the base of themantle[J].Physics of the Earth and PlanetaryInteriors,2004,146(3-4):441-467.
[14]Ni S D,Tan E,Gurnis M,et al.Sharp sides to theAfrican superplume[J].Science,2002,296(5574):1 850-1 852.
[15]Buffett B A.Esti mates of heat flowin the deep mantlebased on the power requirements for the geodynamo[J].Geophys Res Lett,2002,29(12).doi:10.1029/2001GL014649.
[16]Kellogg L H,Hager B H,Van der Hilst R D.Compositional stratification in the deep mantle[J].Science,1999,283:1 881-1 884.
[17]Grand S P,Van der Hilst R D,Widiyantoro S.Globalseismic tomography:A snapshot of convection in theEarth[J].GSA Today,1997,7(4):1-7.
[18]Sidorin Igor,Gurnis M,Hel mberger D V.Dynamicsof a phase change at the base of the mantle consistentwith seismological observations[J].J Geophys Res,1999,104(B7):15 005-15 023.
[19]Ni S D,Ding X M,Hel mberger D V.Constructingsynthetics from deep earth tomographic models[J].Geophysical Journal International,2000,140(1):71-82.
[20]Wysession M E,Lay T,Revenaugh J,et al.The D″Discontinuity and its I mplications[M]//The Core-Mantle Boundary Region.Washington:AGU Press,1998:273-297.
[21]Murakami M.Phase transition of lower mantle mineralandits geophysical i mplications[D].Tokyo Institute ofTechnology,2004.
[22]Murakami M,Hirose K,Kawamura K,et al.Post-perovskite phase transition in MgSi O3[J].Science,2004,304:855-858.
[23]Oganov A R,Ono S.Theoretical and experi mentalevidence for a post-perovskite phase of MgSi O3inEarth s D″layer[J].Nature,2004,430:445-448.
[24]Shi m S H,Duffy T S,Jeanloz R,et al.Stability andcrystal structure of MgSi O3perovskite to the core-mantle boundary[J].Geophys Res Lett,2004,31.L10603.doi:10.1029/2004GL019639.
[25]Iitaka T,Hirose K,Kawamura K,et al.The elasticityof the MgSi O3post-perovskite phase in the Earth slowermost mantle[J].Nature,2004,430:442-445.
[26]Lay T,Heinz D,Ishii M,et al.Multi-displinaryi mpact of the deep mantle post-perovskite phasetransition[J].EOS,2005,86(1):1-5.
[27]Garnero E J,Maupin V,Lay T,et al.Variableazi muthal anisotropy in Earth s lowermost mantle[J].Science,2004,306(5694):259-261.
[28]Garnero EJ,Hel mberger D V.Avery slowbasal layerunderlying large-scale low-velocity anomalies in thelower mantle beneath the Pacific:evidence from corephases[J].Phys Earth&Planet Inter,1995,91:161-176.
[29]Garnero E J,Hel mberger D V.Seismic detection of athin laterally varying boundary layer at the base of themantle beneath the central-Pacific[J].Geophys ResLett,1996,23:977-980.
[30]Wen L X,Hel mberger D V.Atwo-di mensional P-SVhybrid method and its application to modeling localizedstructures near the core-mantle boundary[J].Journalof Geophysical Research-Solid Earth,1998,103(B8):特约评述17 901-17 918.
[31]Hel mberger D V,Ni S D,Wen L X,et al.Seismicevidence for ultra lowvelocity zones beneath Africa andeastern Atlantic[J].Journal of Geophysical Research,2000,105:23 865-23 878.
[32]Garnero E J,MS Thorne,McNamara A,et al.Fine-scale ultra-lowvelocity zone layering at the core-mantleboundary and superplumes[M]//SuperplumeMonograph.Springer,2007(in press).
[33]Thorne M S,Garnero E J,Grand S.Geographiccorrelation between hot spots and deep mantle lateralshear-wave velocity gradients[J].Phys Earth PlanetInter,2004,146:47-63.
[34]Wen L X,Hel mberger D V.Ultra-low velocity zonesnear the core-mantle boundary from broadband PKPprecursors[J].Science,1998,279(5357):1 701-1 703.
[35]Avants M,Lay T,Garnero E J.Determining shearvelocity structure of the ULVZ beneath the centralPacific using stacked ScS data[J].Geophys Res Lett,2006,33.L07314.doi:10.1029/2005GL024989.
[36]Luo S N,Ni S D,Hel mberger D V.Evidence for asharp lateral variation of velocity at the core-mantleboundary from multipathed PKPab[J].Earth andPlanetary Science Letters,2001,189(3-4):155-164.
[37]Mori J,Hel mberger D V.Localized boundary layerbelow the mid-Pacific velocity anomaly from a PcPprecursor[J].J Geophys Res,1995,100:20 359-20 365.
[38]Garnero E J,Vidale J.ScP:a probe of ultralow-velocity zones at the base of the mantle[J].GeophysRes Lett,1999,26:377-380.
[39]Rost S,Revenaugh J.Small-scale ultra-low velocityzone structure i maged by ScP[J].J Geophys Res,2003,108(B1).2 056.doi:10.1029/2001JB001627.
[40]Rost S,Garnero E J,Williams Q,et al.Seismicconstraints on a possible plume root at the core-mantleboundary.Nature,2005,435:666-669.
[41]McSweeney T J,Creager K C,R T Merrill.Depthextent of inner-core seismic anisotropy andi mplicationsfor geomagnetism.Phys Earth Planet Inter,1997,101:131-156.
[42]Rost S,Garnero EJ.Detection of an ultra-lowvelocityzone at the CMB using diffracted PKKPab waves[J].JGeophys Res,2006,111.B07309,doi:10.1029/2005JB003850.
[43]Williams Q,Garnero E J.Seismic evidence for partialmelt at the base of Earth s mantle[J].Science,1996,273:1 528-1 530.
[44]Buffett B A,Garnero EJ,Jeanloz R.Sedi ments at thetop of Earth s core[J].Science,2000,290:1 338-1 342.
[45]Dobson D P,Brodholt J P.Subducted banded ironformations as a source of ultralow-velocity zones at thecore-mantle boundary[J].Nature,2005,434:371-374.
[46]Mao W L,Mao H-k,Sturhahn W,et al.Iron-richpost-perovskite and the origin of ultralow-velocityzones[J].Science,2006,312:564-565.
[47]Wen L X.Seismic evidence for a rapidly varyingcompositional anomaly at the base of the Earth s mantlebeneath the Indian Ocean[J].Earth Planet Sci Lett,2001,194:83-95.
[48]McNamara A K,Zhong S J.Thermochemicalstructures within a spherical mantle:Superplumes orpiles[J].J Geophys Res,2004,109.B07402.doi:10.1029/2003JB002847.
[49]Wang Y,Wen L X.Mapping the geometry andgeographic distribution of a very low velocity provinceat the base of the Earth s mantle[J].J Geophys Res,2004,109.B10305.doi:10.1029/2003JB002674.
[50]Ni S D,Hel mberger D V,Tromp J.Three-di mensional structure of the African superplume fromwaveform modelling[J].Geophys J Int,2005,161:283-294;doi:10.1111/j.1365-246X.2005.02508.x.
[51]Hel mberger D V,Ni S D.Approxi mate 3D body-wavesynthetics for tomographic models[J].Bulletin of theSeismological Society of America,2005,95(1):212-224.
[52]Komatitsch D,Ritsema J,Tromp J.The spectral-element method,beowulf computing,and globalseismology[J].Science,2002,298:1 737-1 742.
[53]Hung S H,Dahlen FA,Nolet G.Wavefront healing:a banana-doughnut perspective[J].Geophysical JournalInternational,2000,146(2):289-312.
[54]Zhao L,Jordan T H,Chapman C H.Three-di mensional Frechet differential kernels for seismicdelay ti mes[J].Geophysical Journal International,2000,141(3):558-576.
[55]Liu Q Y,Tromp J.Finite-frequency kernels basedupon adjoint methods[J].Bull SeismSoc Amer,2006,96:2 383-2 397.
[56]An Q,Zheng Lianqing,Fu Rongshan,et al.Solid-liquid transitions of sodium chloride at high pressures[J].J Chem Phys,2006,125,(154510):1-10.