On the interpretation of SKS splitting measurements in the presence of several layers of anisotropy

Geophysical Journal International

Volumn 188, Issue 3, 2012, Pages 1129-1140

  Romanowicz, Barbara ^a   Yuan, Huaiyu ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

Body waves; Seismic anisotropy; Seismic tomography; Surface waves and free oscillations; Theoretical seismology

Indexed keywords

AXIS OF SYMMETRY; BODY WAVES; DIAGNOSTIC TOOLS; EFFECTIVE PARAMETERS; FAST AXIS; FREQUENCY RANGES; INCIDENT WAVES; JOINT INVERSION; ORDER OF LAYERS; SEISMIC ANISOTROPY; SEISMIC TOMOGRAPHY; SPLITTING MEASUREMENTS; UPPER MANTLE; WAVE FORMS;

CONVOLUTION; SEISMIC PROSPECTING; SEISMOLOGY; SURFACE WAVES;

ANISOTROPY;

AZIMUTH; BODY WAVE; PERIODICITY; SEISMIC ANISOTROPY; SEISMIC TOMOGRAPHY; SEISMOLOGY; SURFACE WAVE; WAVEFORM ANALYSIS;

EID: 84857048400     PISSN: 0956540X     EISSN: 1365246X     Source Type: Journal    
DOI: 10.1111/j.1365-246X.2011.05301.x     Document Type: Article

References (46)

1. Anderson, D.L., 1961. Elastic wave propagation in layered anisotropic media, J. geophys. Res., 66, 2953-2963.
2. Babuska, V., Montagner, J.P., Plomerov, J. & Girardin, N., 1998. Age-dependent large-scale fabric of the mantle lithosphere as derived from surface-wave velocity anisotropy, Pure appl. Geophys., 151, 257-280.
3. Becker, T., Chevrot, S., Schulte-Pelkum, V. & Blackman, D., 2006. Statistical properties of seismic anisotropy predicted by upper mantle geodynamic models, J. geophys. Res., 111, B08309, doi:.
4. Chevrot, S., 2000. Multichannel analysis of shear wave splitting, J. geophys. Res., 105, 21579-521590.
5. Chevrot, S., 2006. Finite-frequency vectorial tomography: a new method for high-resolution imaging of upper mantle anisotropy, Geophys. J. Int., 165, 641-657.
6. Chevrot, S. & van der Hilst, R.D., 2003. On the effects of a dipping axis of symetry on shear wave splitting measurements in a transversely isotropic medium, Geophys. J. Int., 152, 497-505.
7. Debayle, E. & Kennett, B.L.N., 2000. Anisotropy in the Australasian upper mantle from Love and Rayleigh waveform inversion, Earth planet. Sci. Lett., 184, 339-351.
8. Debayle, E., Kennett, B. & Priestley, K., 2005. Global azimuthal seismic anisotropy and the unique plate-motion deformation of Australia, Nature, 433, 509-512.
9. Dziewonski, A.M. & Anderson, D.L., 1981. Preliminary reference Earth model, Phys. Earth planet. Inter., 25, 297-356.
10. Ekström, G. & Dziewonski, A.M., 1998. The unique anisotropy of the Pacific upper mantle, Nature, 394, 168-172.
11. Forsyth, D.W., 1975. The early structural evolution and anisotropy of the oceanic upper mantle, Geophys. J. R. astr. Soc., 43, 103-162.
12. Gaherty, J.B., 2004. A surface wave analysis of seismic anisotropy beneath eastern North America, Geophys. J. Int., 158, 1053-1066.
13. Gripp, A.E. & Gordon, R.G., 2002. Young tracks of hotspots and current plate velocities, Geophys. J. Int., 150, 321-361.
14. Gung, Y., Panning, M. & Romanowicz, B., 2003. Global anisotropy and the thickness of continents, Nature, 422, 707-711.
15. Hess, H.H., 1964. Seismic anisotropy of the uppermost mantle under oceans, Nature, 203, 629-631.
16. Levin, V. & Park, J. 1997. P-SH conversions in a flat-layered medium with anisotropy of abitrary orientation, Geophys. J. Int., 131, 253-266.
17. Levin, V. & Park, J., 1998. P-SH conversions in layered media with hexagonally symmetric anisotropy: a cookbook, Pure appl. Geophys., 151, 669-697.
18. Levin, V. & Park, J., 2000. Shear zones in the Proterozoic lithosphere of the Arabian Shield and the nature of the Hales discontinuity, Tectonophysics, 323, 131-148.
19. Liu, K.H., 2009. NA-SWS-1.1: A uniform database of teleseismic shear wave splitting measurements for North America, Geochem. Geophys. Geosyst., 10, doi:.
20. Love, A.E.H., 1911. Some Problems of Geodynamics, Cambridge University Press, Cambridge, UK
21. Marone, F. & Romanowicz, B., 2007. The depth distribution of azimuthal anisotropy in the continental upper mantle, Nature, 447, 198-201.
22. Marone, F., Gung, Y. & Romanowicz, B., 2007. 3D radial anisotropic structure of the North American upper mantle from inversion of surface waveform data, Geophys. J. Int., 171, 206-222, doi:.
23. Menke, W. & Levin, V., 2003. The cross-convolution method for interpreting SKS splitting observations, with application to one and two-layer anisotropic earth models, Geophys. J. Int., 154, 379-392.
24. Montagner, J.-P., 2002. Upper mantle low anisotropy channels below the Pacific plate, Earth planet. Sci. Lett., 202, 263-274.
25. Montagner, J.-P. & Nataf, H.-C., 1986. A simple method for inverting the azimuthal anisotropy of surface waves, J. geophys. Res., 91, 511-520.
26. Montagner, J.-P. & Nataf, H.-C., 1988. Vectorial tomography I. Theory, Geophys. J. R. astr. Soc., 94, 295-307.
27. Montagner, J.-P. & Tanimoto, T., 1991. Global upper mantle tomography of seismic velocities and anisotropies, J. geophys. Res., 96, 20337-20351.
28. Montagner, J.-P., Griot-Pommera, D.-A. & Lave, J., 2000. How to relate body wave and surface wave anisotropy? J. geophys. Res., 105, 19915-19027.
29. Monteiller, V. & Chevrot, S., 2010. How to make robust splitting measurements for single-station analysis and three-dimensional imaging of seismic anisotropy, Geophys. J. Int., 182, 311-328.
30. Nataf, H.-C., Nakanishi, I. & Anderson, D.L., 1986. Measurements of mantle wave velocities and inversion for lateral heterogeneities and anisotropy 3. Inversion, J. geophys. Res., 91, 7261-7307.
31. Park, J., 1996. Surface waves in layered anisotropic structures, Geophys. J. Int., 126, 173-183.
32. Park, J. & Levin, V., 2002. Seismic anisotropy: tracing plate dynamics in the mantle, Science, 296, 485-489, doi:.
33. Rümpker, G. & Silver, P.G., 1998. Apparent shear-wave splitting parameters in the presence of vertically varying anisotropy, Geophys. J. Int., 135, 790-800.
34. Saltzer, R.L., Gaherty, J.B. & Jordan, T.H., 2000. How are vertical shear wave splitting measurements affected by variations in the orientation of azimuthal anisotropy with depth?, Geophys. J. Int., 141, 374-390.
35. Schlue, J.W. & Knopoff, L., 1977. Shear-wave polarization anisotropy in the Pacific Basin, Geophys. J. R. astr. Soc., 49, 145-165.
36. Silver, P.G., 1996. Seismic anisotropy beneath the continents: probing the depths of geology, Annu. Rev. Earth planet. Sci., 24, 385-432.
37. Silver, P.G. & Chan, W.W., 1991. Shear wave splitting and subcontinental mantle deformation, J. geophys. Res., 96, 16429-416454.
38. Silver, P.G. & Long, M.D., 2011. The non-commutivity of shear wave splitting operators at low frequencies and implications for anisotropy tomography, Geophys. J. Int., 184, 1415-1427.
39. Silver, P.G. & Savage, M.K., 1994. The interpretation of shear-wave splitting parameters in the presence of two anisotropic layers, Geophys. J. Int., 119, 949-963.
40. Simons, F.J., van der Hilst, R.D., Montagner, J.P. & Zielhuis, A., 2002. Multimode Rayleigh wave inversion for heterogeneity and azimuthal anisotropy of the Australian upper mantle, Geophys. J. Int., 151, 738-754.
41. Smith, M.L. & Dahlen, F.A., 1973. The azimuthal dependence of Love and Rayleigh wave propagation in a slightly anisotropic medium, J. geophys. Res., 78, 3321-3333.
42. Smith, D., Ritzwoller, M.H. & Shapiro, N., 2004. Stratification of anisotropy in the Pacific upper mantle, J. geophys. Res, 109, doi:.
43. Vinnik, L.P., Farra, V. & Romanowicz, B., 1989. Azimuthal anisotropy in the Earth from observations of SKS at GEOSCOPE and NARS broadband stations, Bull. seism. Soc. Am., 79, 1542-1558.
44. Yuan, H. & Romanowicz, B., 2010. Lithospheric layering in the North American craton, Nature, 466, 1063-1068.
45. Yuan, H., Dueker, K. & Schutt, D., 2008. Testing five of the simplest upper mantle anisotropic velocity parameterizations using teleseismic S and SKS data from the Billings, Montana PASSCAL array, J. geophys. Res, 113, doi:.
46. Yuan, H., Romanowicz, B., Fischer, K.M. & Abt, D., 2011. 3-D shear wave radially and azimuthally anisotropic velocity model of the North American upper mantle, Geophys. J. Int., 184, 1237-1260.