Accounting for lateral variations of the upper mantle gradient in Pn tomography studies

Geophysical Research Letters

Volumn 34, Issue 14, 2007, Pages

  Phillips, W S ^a   Begnaud, M L ^a   Rowe, C A ^a   Steck, L K ^a   Myers, S C ^b   Pasyanos, M E ^b   Ballard, S ^c  

^a LOS ALAMOS NATIONAL LABORATORY   (United States)

^b LAWRENCE LIVERMORE NATIONAL LABORATORY   (United States)

^c SANDIA NATIONAL LABORATORIES   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

STRUCTURAL GEOLOGY; THERMAL GRADIENTS; TOMOGRAPHY;

GRADIENT PATTERN; UPPER MANTLE GRADIENTR;

TECTONICS;

ARRIVAL TIME; SEISMIC DATA; SEISMIC TOMOGRAPHY; SEISMIC VELOCITY; SEISMOLOGY; TEMPERATURE GRADIENT; TETHYS; UPPER MANTLE;

ASIA; CHINA; EURASIA; FAR EAST; XIZANG;

EID: 34548561966     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2007GL029338     Document Type: Article

References (26)

1. Beghoul, N., and M. Barazangi (1995), Comment on "Lateral variations and azimuthal isotropy of Pn velocities beneath Basin and Range Province" by Lian-She Zhao, J. Geophys. Res., 100, 12,459-12,461.
2. Begnaud, M. L., L. K. Steck, and C. A. Rowe (2006), Improving seismic event locations in Asia by using catalog-scale empirical travel time correction surfaces, Eos Trans. AGU, 87, Fall Meet. Suppl., Abstract T51D-1550.
3. Bondar, I., S. C. Myers, E. R. Engdahl, and E. A. Bergman (2004), Epicentre accuracy based on seismic network criteria, Geophys. J. Int., 156, 483-496.
4. Clouser, R. H., and C. A. Langston (1990), Upper mantle structure of southern Africa from Pnl waves, J. Geophys. Res., 95, 17,403-17,415.
5. Engdahl, E. R., R. van der Hilst, and R. Buland (1998), Global teleseismic earthquake relocation with improved travel times and procedures for depth determination, Bull. Seismol. Soc. Am., 88, 722-743.
6. Heam, T. M., S. Wang, J. F. Ni, Z. Xu, Y. Yu, and X. Zhang (2004), Uppermost mantle velocities beneath China and surrounding regions, J. Geophys. Res., 109, B11301, doi:10.1029/2003JB002874.
7. Helmberger, D. V. (1973), Numerical seismograms of long-period body waves from seventeen to forty degrees, Bull. Seismol. Soc. Am., 63, 633-646.
8. Kennett, B. L. N., and E. R. Engdahl (1991), Traveltimes for global earthquake location and phase identification, Geophys. J. Int., 105, 429-465.
9. Lee, W. H. K., H. Kanamori, P. C. Jennings, and C. Kisslinger (Eds.) (2002), International Handbook of Earthquake and Engineering Seismology [CD Suppl.], Academic, Amsterdam.
10. Liang, C., and X. Song (2006), A low velocity belt beneath northern and eastern Tibetan Plateau from Pn tomography, Geophys. Res. Lett., 33, L22306, doi:10.1029/2006GL027926.
11. Liang, C., X. Song, and J. Huang (2004), Tomographic inversion of Pn travel times in China, J. Geophys. Res., 109, B11304, doi:10.1029/ 2003JB002789.
12. n travel time tomography, J. Geophys. Res., 102, 493-505.
13. Paige, C. C., and M. A. Saunders (1982), Algorithm 583, LSQR: Sparse linear equations and least-squares problems, ACM Trans. Math. Software, 8, 195-209.
14. Pei, S., J. Zhao, Y. Sun, Z. Xu, S. Wang, H. Liu, C. A. Rowe, M. N. Toksöz, and X. Gao (2007). Upper mantle seismic velocities and anisotropy in China determined through Pn and Sn tomography, J. Geophys. Res., 112, B05312, doi:10.1029/2006JB004409.
15. Phillips, W. S., and M. C. Fehler (1991), Traveltime tomography: A comparison of popular methods, Geophysics, 56, 1639-1649.
16. Phillips, W. S., C. A. Rowe, and L. K. Steck (2005). The use of interstation P wave arrival time differences to account for regional path variability, Geophys. Res. Lett., 32, L11301, doi:10.1029/ 2005GL022558.
17. Rowe, C. A., W. S. Phillips, and L. K. Steck (2003), Relative constraints on correction surfaces for more effective use of low-order ground truth, Eos Trans. AGU, 84(46), Fall Meet. Suppl., Abstract S21D-0332.
18. Shaw, P. R., and J. A. Orcutt (1985), Waveform inversion of seismic refraction data and applications to young Pacific crust, Geophys. J. R. Astron. Soc., 82, 375-414.
19. Sun, Y., and M. N. Toksöz (2006), Crustal structure of China and surrounding regions from P wave traveltime tomography, J. Geophys. Res., 111, B03310, doi:10.1029/2005JB003962.
20. Sun, Y., X. Li, S. Kuleli, F. D. Morgan, and M. N. Toksöz (2004). Adaptive moving window method for 3D P-velocity tomography and its application in China, Bull. Seismol. Soc. Am., 94, 740-746.
21. Thurber, C. H. (1983), Earthquake locations and three-dimensional crustal structure in the Coyote Lake area, central California, J. Geophys. Res., 88, 8226-8236.
22. Vincenty, T. (1975), Direct and inverse solutions of geodesics on the ellipsoid with application of nested equations, Surv. Rev., 23, 88-93.
23. Wessel, P., and W. H. F. Smith (1998), New, improved version of the Generic Mapping Tools released, Eos Trans. AGU, 79(47), 579.
24. Zhao, L.-S. (1993), Lateral variations and azimuthal isotropy of Pn velocities beneath Basin and Range Province, J. Geophys. Res., 98, 22,109-22,122.
25. Zhao, L.-S. (1995), Reply, J. Geophys. Res., 100, 12,463-12,464.
26. n traveltime tomography, Geophys. J. Int., 115, 1070-1084.