A new probe of ULVZ S-wave velocity stucture: Array stacking of ScS waveforms

Geophysical Research Letters

Volumn 33, Issue 7, 2006, Pages

  Avants, Megan ^a   Lay, Thorne ^a   Garnero, Edward J ^b  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b ARIZONA STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

PEROVSKITE; SEISMIC PROSPECTING; SENSITIVITY ANALYSIS; STRUCTURAL ANALYSIS; TECTONICS; THERMAL GRADIENTS; WAVEFORM ANALYSIS;

BROADBAND SEISMIC NETWORKS; CORE-MANTLE BOUNDARY; ULTRA-LOW VELOCITY ZONE;

GEOPHYSICS;

CORE-MANTLE BOUNDARY; EARTHQUAKE EVENT; PLATE BOUNDARY; S-WAVE; SEISMIC VELOCITY; SUBDUCTION ZONE; WAVEFORM ANALYSIS;

FIJI; MELANESIA; PACIFIC ISLANDS; PACIFIC OCEAN; POLYNESIA; SOUTH AMERICA; TONGA;

EID: 33646854256     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2005GL024989     Document Type: Article

References (14)

1. Avants, M., T. Lay, S. A. Russell, and E. J. Gamero (2006), Shear velocity variation within the D′ region beneath the central Pacific, J. Geophys. Res., doi:10.1029/2005JB003270, in press.
2. Dziewonski, A. M., and D. L. Anderson (1981), Preliminary reference Earth model, Phys. Earth Planet. Inter., 25, 297-356.
3. Flores, C., and T. Lay (2005), The trouble with seeing double, Geophys. Res. Lett., 32, L24305, doi:10.1029/2005GL024366.
4. Garnero, E. J., J. Revenaugh, Q. Williams, T. Lay, and L. H. Kellogg (1998), Ultralow velocity zone at the core-mantle boundary, in The Core-Mantle Boundary Region, Geodyn. Ser., vol. 28, edited by M. Gurnis et al., pp. 319-334, AGU, Washington, D. C.
5. Hernlund, J. W., C. Thomas, and P. Tackley (2005), A doubling of the post-perovskite phase boundary and structure of the Earth's lowermost mantle, Nature, 434, 882-886.
6. Reasoner, C., and J. Revenaugh (1999), Short-period P wave constraints on D′ reflectivity, J. Geophys. Res., 104, 955-961.
7. Rondenay, S., and K. M. Fischer (2003), Constraints on localized core-mantle boundary strucnire from multi-channel, broadband SKS coda analysis, J. Geophys. Res., 108(B11), 2537, doi:10.1029/2003JB002518.
8. Rost, S., and J. Revenaugh (2003), Small-scale ultralow-velocity zone structure imaged by ScP, J. Geophys. Res., 108(B1), 2056, doi:10.1029/ 2001JB001627.
9. Russell, S. A., T. Lay, and E. J. Gamero (1999), Small-scale lateral shear velocity and anisotropy heterogeneity near the core-mantle boundary beneath the Central Pacific imaged using broadband ScS waves, J. Geophys. Res., 104, 13,183-13,200.
10. Russell, S. A., C. Reasoner, T. Lay, and J. Revenaugh (2001), Coexisting shear- and compressional-wave seismic velocity discontinuities beneath the central Pacific, Geophys. Res. Lett., 28, 2281-2284.
11. Stutzmann, E., L. Vinnik, A. Ferreira, and S. Singh (2000), Constraint on the S-wave velocity at the base of the mantle, Geophys. Res. Lett., 27, 1571-1574.
12. Vidale, J. E., and M. A. H. Hedlin (1998), Evidence for partial melt at the core-mantle boundary north of Tonga from the strong scattering of seismic waves, Nature, 391, 682-685.
13. Wen, L., and D. V Helmberger (1998), Ultra-low velocity zones near the core-mantle boundary from broadband PKP precursors, Science, 279, 1701-1703.
14. Williams, Q., and E. J. Garnero (1996), Seismic evidence for partial melt at the base of Earth's mantle, Science, 273, 1528-1530.