Lateral variation of the D″ discontinuity beneath the Cocos Plate

Geophysical Research Letters

Volumn 31, Issue 15, 2004, Pages

  Lay, T ^a   Garnero, E J ^b   Russell, S A ^c  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b ARIZONA STATE UNIVERSITY   (United States)

^c Weston Geophysical Corporation   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DATA REDUCTION; GEOPHYSICS; REFLECTION; SHEAR WAVES;

SHEAR VELOCITY; SHEAR WAVE SIGNALS;

EARTHQUAKES;

COCOS PLATE; CORE-MANTLE BOUNDARY; MANTLE DISCONTINUITY; S-WAVE; SPATIAL VARIATION;

EID: 3843135822     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2004GL020300     Document Type: Article

References (15)

1. Ding, X., and D. V. Helmberger (1997), Modeling D″ structure beneath Central America with broadband seismic data, Phys. Earth Planet. Inter., 101, 245-270.
2. Dziewonski, A. M., and D. L. Anderson (1981), Preliminary reference Earth model, Phys. Earth Planet. Inter., 25, 297-356.
3. Garnero, E. J., and T. Lay (2003), D″ shear velocity heterogeneity, anisotropy, and discontinuity structure beneath the Caribbean and Central America, Phys. Earth Planet. Inter., 140, 219-242.
4. Grand, S. P. (2002), Mantle shear-wave tomography and the fate of subducted slabs, Philos. Trans. R. Soc. London, Ser A, 360, 2475-2491.
5. Kendall, J.-M., and C. Nangini (1996), Lateral variations in D″ below the Caribbean, Geophys. Res. Lett., 23, 395-402.
6. Lay, T., and E. J. Garnero (2004), The State of the Planet, Geophys. Monogr. Ser., AGU, Washington, D. C., in press.
7. Lay, T., and D. V. Helmberger (1983), A lower mantle S-wave triplication and the shear velocity structure of D″, Geophys. J. R. Astron. Soc., 75, 799-837.
8. Müller, G. (1985), The reflectivity method: A tutorial, J. Geophys., 58, 153-174.
9. Polet, J., and H. Kanamori (2002), Anisotropy beneath California shear wave splitting measurements using a dense broadband array, Geophys. J. Int., 149, 313-317.
10. Reasoner, C., and J. Revenaugh (1999), Short-period P wave constraints on D″ reflectivity, J. Geophys. Res., 104, 955-961.
11. Revenaugh, J., and R. Meyer (1997), Seismic evidence of partial melt within a possibly ubiquitous low velocity layer at the base of the mantle, Science, 277, 670-673.
12. Rokosky, J. M., T. Lay, E. J. Garnero, and S. A. Russell (2004), High-resolution investigation of shear wave anisotropy in D″ beneath the Cocos Plate, Geophys. Res. Lett., 31, L07605, doi:10.1029/2003GL018902.
13. Thomas, C., E. J. Garnero, and T. Lay (2004), High-resolution imaging of lowermost mantle structure under the Cocos Plate, J. Geophys. Res., doi:10.1029/2004JB003013, in press.
14. Wysession, M. E., T. Lay, J. Revenaugh, Q. Williams, E. J. Garnero, R. Jeanloz, and L. H. Kellogg (1998), The D″ discontinuity and its implications, in The Core-Mantle Boundary Region, Geodyn. Ser., vol. 28, edited by M. Gurnis et al., pp. 273-297, AGU, Washington, D. C.
15. Zhang, J., and T. Lay (1984), Investigation of a lower mantle shear-wave triplication using a broadband array, Geophys. Res. Lett., 11, 620-623.