Evidence for a sharp lateral variation of velocity at the core-mantle boundary from multipathed PKPab

Earth and Planetary Science Letters

Volumn 189, Issue 3-4, 2001, Pages 155-164

  Luo, Sheng Nian ^a   Ni, Sidao ^a   Helmberger, Donald V ^a  

^a CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

Core mantle boundary; Lateral heterogeneity; PKP waves; Plumes; Waveforms

Indexed keywords

CORE-MANTLE BOUNDARY; MANTLE PLUME; MANTLE STRUCTURE; P-WAVE; SEISMIC VELOCITY;

EID: 0034896725     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0012-821X(01)00364-8     Document Type: Article

References (38)

1. Anisotropy of the inner core from differential travel times of the phases PKP and PKIKP
2. PKP(BC-DF) travel time residuals and short scale heterogeneity in the deep earth
3. PKP differential travel times: Implications for 3-D lower mantle
4. Depth extent of inner-core seismic anisotropy and implications for geomagnetism
5. PKP(BC) versus PKP(DF) differential travel times and aspherical structure in the Earth's inner core
6. Pulse distortion and Hilbert transformation by a frequency-dependent full wave theory, and their interpretation
7. Effect of velocity structure in D″ on PKP phases
8. Scatter and bias in differential PKP travel times and implications for mantle and core phenomena
9. A P wave velocity of Earth's core
10. Complex shear velocity structure imaged beneath Africa and Iceland
11. The effect of D″ on PKP(AB-DF) travel time residuals and possible implications for inner core structure
12. Constructing synthetics from deep earth tomographic models
13. Modeling two-dimensional structure at the core-mantle boundary
14. Numerical seismograms of long-period body waves from seventeen to forty degrees
15. Ultra-low velocity zones near the core-mantle boundary from broadband PKP precursors
16. A two-dimensional P-SV hybrid method and its application to modeling localized structures near the core-mantle boundary
17. Normal-model and free-air gravity constraints on lateral variations in velocity and density of earth's mantle
18. discontinuities and its implications
19. Localized boundary layer below the mid-Pacific velocity anomaly identified from a PcP precursor
20. A very slow basal layer underlying large-scale low-velocity anomalies in the lower mantle beneath the Pacific - Evidence from core phases
21. A strongly negative shear velocity gradient and lateral variability in the lower most mantle beneath the Pacific
22. Improved resolution of the lowermost mantle shear velocity structure obtained using SKS-S data
23. Global mantle shear velocity model developed using nonlinear asymptotic coupling theory
24. A shear velocity model of the mantle
25. Large-scale structure at the core-mantle boundary from core-diffracted phases
26. Large-scale mantle convection and the history of subduction
27. Three-dimensional structure at the base of the mantle beneath the central Pacific
28. Small-scale lateral shear velocity and anisotrópy heterogeneity near the core-mantle boundary beneath central Pacific imaged using broadband ScS waves
29. Evidence for partial melt at the core-mantle boundary north Tonga from the strong scattering of seismic waves
30. Seismic evidence for ultralow-velocity zone beneath Africa and eastern Atlantic
31. Horizontal transition from fast (slab) to slow (plume) structures at the Core-Mantle Boundary
32. Interpreting D″ seismic structure using synthetic wave-forms computed from dynamic models
33. Slab dynamics at the core-mantle boundary
34. Sediments at the top of the Earth's core
35. Various influences on plumes and dynamics in time-dependent, compressible mantle convection in 3-D spherical shell
36. Generation of mega-plumes from the core-mantle boundary in a compressible mantle with temperature-dependent viscosity
37. 187Os systematics of Hawaiian picrites